{"id":11402,"date":"2021-06-29T05:57:18","date_gmt":"2021-06-29T05:57:18","guid":{"rendered":"https:\/\/duct.harsle.com\/?p=11402"},"modified":"2024-03-04T08:30:16","modified_gmt":"2024-03-04T08:30:16","slug":"what-is-the-ventilation-duct","status":"publish","type":"post","link":"https:\/\/duct.harsle.com\/ar\/what-is-the-ventilation-duct\/","title":{"rendered":"\u0645\u0627 \u0647\u064a \u0642\u0646\u0627\u0629 \u0627\u0644\u062a\u0647\u0648\u064a\u0629"},"content":{"rendered":"

What Is The Ventilation Duct What is the common \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0644\u0627\u0635\u0642<\/a> \u0641\u064a \u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0648\u062a\u0643\u064a\u064a\u0641 \u0627\u0644\u0647\u0648\u0627\u0621\u061f \u0645\u0627 \u0647\u064a \u0645\u064a\u0632\u0627\u062a\u0647\u0645 \u0627\u0644\u0641\u0631\u064a\u062f\u0629\u061f \u062d\u0648\u0644 \u0645\u0634\u0643\u0644\u0629 \u0645\u0648\u0627\u062f \u062e\u0637\u0648\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u060c \u064a\u062a\u0645 \u0641\u0647\u0645 \u0647\u0630\u0647 \u0627\u0644\u0645\u0642\u0627\u0644\u0629 \u0628\u0627\u0644\u062a\u0641\u0635\u064a\u0644 \u060c \u0648\u0628\u0639\u062f \u0630\u0644\u0643 \u0633\u0646\u062e\u0628\u0631 \u0627\u0644\u0639\u0645\u0644\u0627\u0621 \u0643\u064a\u0641\u064a\u0629 \u0627\u062e\u062a\u064a\u0627\u0631 \u0622\u0644\u0627\u062a \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621.<\/a><\/p>\n\n\n\n

\u0645\u0627 \u0647\u064a \u0642\u0646\u0627\u0629 \u0627\u0644\u062a\u0647\u0648\u064a\u0629<\/strong><\/h3>\n\n\n\n
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1. It has high strength and can withstand the wind pressure of 3000pa, which can meet the use of a high, medium, and low-pressure air system. What Is The Ventilation Duct<\/p>\n\n\n\n

2. It can be processed on-site, with low transportation cost and convenient adjustment, without affecting the construction period. What Is The Ventilation Duct<\/p>\n\n\n\n

\"\u0645\u062c\u0627\u0631\u064a
<\/figcaption><\/figure>\n\n\n\n
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1.\u00a0It is easy to rust and has a short service life, which is not conducive to improving the indoor air quality. In a humid environment, the service life is only 5-7 years, and after 4-5 years, the inside of the air duct is full of rust. What Is The Ventilation Duct<\/p>\n\n\n\n

2.\u00a0High air leakage rate and high energy consumption. The iron sheet air duct is connected by bite and flange, and its air leakage rate is about 10% (permitted by national standards). What Is The Ventilation Duct<\/p>\n\n\n\n

3.\u00a0The ventilation is noisy. The thin wall of the iron sheet duct will produce noise under the action of wind speed and pressure. What Is The Ventilation Duct<\/p>\n\n\n\n

4.\u00a0Large weight increases the load of the building. The weight of iron sheet air duct is more than 10kg per square meter. What Is The Ventilation Duct<\/p>\n\n\n\n

5.\u00a0High thermal conductivity. The iron sheet air duct adopts external insulation, which increases the project cost and affects the construction period. If the external insulation is not in place or damaged, it will produce a cold bridge. Condensate damage to the ceiling will damage the following objects. What Is The Ventilation Duct<\/p>\n\n\n\n

6. \u062f\u0648\u0631\u0629 \u0627\u0644\u0625\u0646\u062a\u0627\u062c \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0637\u0648\u064a\u0644\u0629. \u064a\u062c\u0628 \u0623\u0646 \u064a\u062a\u0645 \u0625\u0646\u0634\u0627\u0621 \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 \u0645\u0646 \u0627\u0644\u0635\u0641\u064a\u062d\u0629 \u0627\u0644\u062d\u062f\u064a\u062f\u064a\u0629 \u0628\u0648\u0627\u0633\u0637\u0629 \u0622\u0644\u0627\u062a \u0643\u0628\u064a\u0631\u0629 \u0627\u0644\u062d\u062c\u0645 \u060c \u0645\u0639 \u062a\u0642\u0648\u064a\u0636 \u0648\u0634\u0641\u0629 \u060c \u0648\u0627\u0644\u0633\u0631\u0639\u0629 \u0628\u0637\u064a\u0626\u0629.<\/p>\n\n\n\n

7.\u00a0High maintenance costs. The iron sheet air duct should be maintained and treated with rust prevention. What Is The Ventilation Duct<\/p>\n\n\n\n

8) It’s not beautiful. The iron sheet air duct is not smooth and beautiful after external insulation. What Is The Ventilation Duct<\/p>\n\n\n\n

9.\u00a0Occupy the ceiling space. The iron sheet air duct, together with the height of the flange and the thickness of the insulation material, occupies a large ceiling space (generally 40-60 mm). What Is The Ventilation Duct<\/p>\n\n\n\n

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Aluminum foil composite glass fiber duct is made directly from the heat preservation material of iron sheet air pipe – superfine glass wool. In 1992, super air duct (glass fiber duct) entered the domestic market. Although it has been operated for more than ten years, the market share is still quite small, even the share is shrinking. What Is The Ventilation Duct<\/p>\n\n\n\n

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<\/figcaption><\/figure>\n\n\n\n
\u0645\u0632\u0627\u064a\u0627 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629 \u0627\u0644\u0645\u0631\u0643\u0628\u0629 \u0628\u0631\u0642\u0627\u0626\u0642 \u0627\u0644\u0623\u0644\u0648\u0645\u0646\u064a\u0648\u0645<\/strong><\/h5>\n\n\n\n
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  1. \u0627\u0645\u062a\u0635\u0627\u0635 \u0627\u0644\u0635\u0648\u062a. \u0646\u0638\u0631\u064b\u0627 \u0644\u0623\u0646\u0647 \u0645\u0635\u0646\u0648\u0639 \u0645\u0628\u0627\u0634\u0631\u0629 \u0645\u0646 \u0627\u0644\u0635\u0648\u0641 \u0627\u0644\u0632\u062c\u0627\u062c\u064a \u0641\u0627\u0626\u0642 \u0627\u0644\u0646\u0639\u0648\u0645\u0629 \u060c \u0641\u0625\u0646 \u0627\u0644\u0645\u0627\u062f\u0629 \u0641\u0636\u0641\u0627\u0636\u0629 \u0646\u0633\u0628\u064a\u064b\u0627 \u0648\u0644\u0647\u0627 \u0623\u062f\u0627\u0621 \u0627\u0645\u062a\u0635\u0627\u0635 \u0635\u0648\u062a \u062c\u064a\u062f.<\/li>\n\n\n\n
  2. Lightweight. It weighs about 3 kg per square meter. What Is The Ventilation Duct<\/li>\n<\/ol>\n\n\n\n
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    1.\u00a0The strength is poor. Due to the direct use of ultra-fine glass wool production, poor pressure bearing capacity can only be used in low-pressure, small ducts. Finished product protection requirements are high, easy to be broken by the later hydropower and decoration projects. It can’t be cleaned. What Is The Ventilation Duct<\/p>\n\n\n\n

    2.\u00a0I’m afraid of dampness. Ultrafine glass wool has high water absorption. If the surface is not sealed properly, especially after slotting, it will absorb a lot of water and reduce the heat preservation performance and strength. What Is The Ventilation Duct<\/p>\n\n\n\n

    3.\u00a0The fiber is easy to disperse. If the surface of superfine glass wool is not sealed in place, especially after slotting, it will lead to fiber dispersion and affect human health. What Is The Ventilation Duct<\/p>\n\n\n\n

    4.\u00a0Large wind resistance. The absolute surface roughness is 0.9-1.1 mm. Generally, the unit power is required to be increased by 10% to increase energy consumption. What Is The Ventilation Duct<\/p>\n\n\n\n

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    Aluminum foil polyurethane air duct is a kind of air duct made of polyurethane in the middle and composite aluminum foil on both sides. One of the main characteristics of aluminum foil polyurethane air duct is lightweight, but its biggest deficiency is that the fire performance can not meet the national requirements. The national “code for fire protection of high rise buildings” and “code for fire protection of civil buildings” both stipulate that the ventilation duct materials must be made of class non-combustible materials. Aluminum foil polyurethane air duct can only reach B 1 level at the highest, and its accessories and glue are organic materials, and can only reach B 1 level at the highest, which is not in line with national standards. The poor strength and pressure bearing capacity of the aluminum foil polyurethane air duct are also its major shortcomings. What Is The Ventilation Duct<\/p>\n\n\n\n

    \"\u0623\u0646\u0627\u0628\u064a\u0628
    <\/figcaption><\/figure>\n\n\n\n

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    Phenolic duct is made of phenolic as thermal insulation material and composite aluminum foil on both sides. What Is The Ventilation Duct<\/p>\n\n\n\n

    The phenolic duct has the advantages of lightweight and obvious disadvantages, such as poor strength, easy pulverization, easy delamination of aluminum foil and phenolic, a large number of strong acids used in the foaming process, organic glue containing formaldehyde, which is not environmentally friendly. What Is The Ventilation Duct<\/p>\n\n\n\n

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    <\/figcaption><\/figure>\n\n\n\n

    \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0630\u0627\u062a \u0627\u0644\u0623\u0644\u0648\u0627\u062d \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0627\u0644\u0645\u0644\u0648\u0646\u0629<\/strong><\/h3>\n\n\n\n

    The color steel plate air duct is divided into single-sided color steel and double-sided color steel. The single-sided color steel is to move the original superfine glass wool from the outside to the inside, that is, a layer of color steel from the outside and a layer of superfine glass wool from the inside. The double-sided color steel is to make a layer of iron sheet protection outside the insulation cotton of the iron sheet air duct. There is no great innovation compared with the iron sheet air duct in technology, but it is actually the iron sheet air duct. The improvement point is that PVC insert is used to replace the bite and flange, and the thermal insulation cotton and color steel plate are formed at one time without secondary thermal insulation. What Is The Ventilation Duct<\/p>\n\n\n\n

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    <\/figcaption><\/figure>\n\n\n\n
    \u0645\u0632\u0627\u064a\u0627 \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0630\u0627\u062a \u0627\u0644\u0623\u0644\u0648\u0627\u062d \u0627\u0644\u0645\u0632\u062f\u0648\u062c\u0629 \u0627\u0644\u062c\u0648\u0627\u0646\u0628<\/strong><\/h5>\n\n\n\n

    1. \u062a\u0645 \u062a\u062d\u0633\u064a\u0646 \u0645\u062d\u0643\u0645 \u0627\u0644\u0647\u0648\u0627\u0621. \u0646\u0638\u0631\u064b\u0627 \u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0625\u062f\u062e\u0627\u0644\u0627\u062a PVC \u0644\u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u0644\u062f\u063a\u0629 \u0648\u0627\u0644\u0634\u0641\u0629 \u060c \u064a\u062a\u0645 \u062a\u0642\u0644\u064a\u0644 \u0645\u0639\u062f\u0644 \u062a\u0633\u0631\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0644\u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0635\u0641\u064a\u062d\u0629 \u0627\u0644\u062d\u062f\u064a\u062f\u064a\u0629.<\/p>\n\n\n\n

    2. There is no need for secondary insulation, which improves the construction efficiency. What Is The Ventilation Duct<\/p>\n\n\n\n

    3. The color steel plate air duct improves the service life. What Is The Ventilation Duct<\/p>\n\n\n\n

    \u0639\u064a\u0648\u0628 \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0630\u0627\u062a \u0627\u0644\u0635\u0641\u064a\u062d\u0629 \u0627\u0644\u0645\u0644\u0648\u0646\u0629 \u0645\u0632\u062f\u0648\u062c\u0629 \u0627\u0644\u062c\u0648\u0627\u0646\u0628<\/strong><\/h5>\n\n\n\n

    1. The use of PVC inserts instead of bite and flange makes the iron sheet air duct nondescript. It not only reduces the fire resistance and fire resistance of the air duct (PVC inserts can only reach B1 level) but also makes the advantages of good toughness of the iron sheet completely lost. In order to improve the tightness, it is more reasonable to think about the construction quality or plugging of the iron sheet air duct. What Is The Ventilation Duct<\/p>\n\n\n\n

    2. Glass wool is easy to disperse inside, which affects human health. Both single side and double side color steel plates need to be slotted to make an air duct. The sealing after slotting is a big problem, and it is difficult to seal in place. What Is The Ventilation Duct<\/p>\n\n\n\n

    3. The air duct is not easy to clean. The interior of one side is glass wool, which is not easy to clean. The interior of two sides is color steel plate. Under the action of cleaning brush, the paint layer will be damaged, which will affect the service life. What Is The Ventilation Duct<\/p>\n\n\n\n

    4. Compared with the iron sheet air duct, the strength is greatly reduced. The thickness of the color steel plate is only 0.3mm, which is 0.2mm less than the thinnest 0.5mm of the iron sheet air duct. The air duct needs to be reinforced, and the spacing between supports needs to be reduced, which increases the cost. What Is The Ventilation Duct<\/p>\n\n\n\n

    5. The finished air duct leaves the factory, which makes the iron sheet air duct easy to make and adjust on site. What Is The Ventilation Duct<\/p>\n\n\n\n

    6. PVC flange strength is not high, no metal bite and flange strength is high, is a weak point of strength. What Is The Ventilation Duct<\/p>\n\n\n\n

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    \"\u0645\u062c\u0631\u0649
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    • Glass magnesium air duct saves energy and reduces the operating cost of the system (energy saving air duct). The energy saving effect of glass magnesium air duct is quite obvious, which is more than 10% more than that of iron sheet air duct. For air duct, the main indexes to distinguish the performance of air duct are the resistance along the way, air leakage rate and insulation performance. The smaller the resistance, the lower the air leakage rate and the better the insulation performance, the better the performance of the air duct is. Glass magnesium air duct has excellent performance in these aspects: What Is The Ventilation Duct<\/li>\n<\/ul>\n\n\n\n
        \n
      1. \u0623\u062f\u0627\u0621 \u0639\u0632\u0644 \u062c\u064a\u062f \u060c \u064a\u0642\u0644\u0644 \u0645\u0646 \u0627\u0633\u062a\u0647\u0644\u0627\u0643 \u0637\u0627\u0642\u0629 \u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u062d\u0631\u0627\u0631\u064a. \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0645\u0646 \u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645 \u0627\u0644\u0632\u062c\u0627\u062c\u064a \u0645\u0648\u0627\u062f \u0639\u0632\u0644 \u0645\u0631\u0643\u0628\u0629 \u0645\u0628\u0627\u0634\u0631\u0629 \u060c \u0644\u0627 \u062a\u062d\u062a\u0627\u062c \u0625\u0644\u0649 \u0639\u0632\u0644 \u062b\u0627\u0646\u0648\u064a \u060c \u0627\u0644\u0645\u0648\u0635\u0644\u064a\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 \u0644\u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0635\u063a\u064a\u0631\u0629 \u060c \u0623\u062f\u0627\u0621 \u0639\u0632\u0644 \u0645\u0645\u062a\u0627\u0632 \u060c \u062a\u0642\u0644\u0644 \u0645\u0646 \u0641\u0642\u062f\u0627\u0646 \u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u062d\u0631\u0627\u0631\u064a \u0641\u064a \u0639\u0645\u0644\u064a\u0629 \u0646\u0642\u0644 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0628\u0627\u0631\u062f \u0648\u0627\u0644\u0633\u0627\u062e\u0646 \u060c \u0628\u0645\u0627 \u064a\u062a\u0645\u0627\u0634\u0649 \u0645\u0639 "\u0627\u0644\u0643\u0648\u062f \u0627\u0644\u0648\u0637\u0646\u064a" \u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0627\u0644\u0637\u0627\u0642\u0629 \u0641\u064a \u0627\u0644\u0645\u0628\u0627\u0646\u064a \u0627\u0644\u0639\u0627\u0645\u0629 ". \u0641\u064a \u0627\u0644\u0648\u0642\u062a \u0646\u0641\u0633\u0647 \u060c \u062d\u0633\u0646\u062a \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645 \u0627\u0644\u0632\u062c\u0627\u062c\u064a \u0627\u0644\u0639\u0632\u0644 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0635\u0627\u062c \u060c \u0648\u062a\u062d\u0648\u0644\u062a \u0625\u0644\u0649 \u0639\u0632\u0644 \u062f\u0627\u062e\u0644\u064a \u060c \u0645\u0645\u0627 \u064a\u062c\u0639\u0644 \u0645\u0627\u062f\u0629 \u0627\u0644\u0639\u0632\u0644 \u0645\u062d\u0645\u064a\u0629 \u0628\u0637\u0628\u0642\u0629 \u063a\u064a\u0631 \u0639\u0636\u0648\u064a\u0629 \u060c \u0648\u062a\u062c\u0646\u0628 \u062a\u0644\u0641 \u0645\u0648\u0627\u062f \u0627\u0644\u0639\u0632\u0644 \u0623\u0648 \u0627\u0644\u0645\u0644\u0648\u062b\u0627\u062a \u0627\u0644\u0623\u062e\u0631\u0649 \u0641\u064a \u0628\u0646\u0627\u0621 \u0623\u0646\u0648\u0627\u0639 \u0623\u062e\u0631\u0649 \u0645\u0646 \u0627\u0644\u0639\u0645\u0644 \u060c \u0648\u0630\u0644\u0643 \u0644\u062c\u0639\u0644 \u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0639\u0632\u0644 \u0645\u0633\u062a\u0642\u0631\u064b\u0627 \u0648\u0637\u0648\u064a\u0644 \u0627\u0644\u0623\u0645\u062f.<\/li>\n\n\n\n
      2. The air leakage rate is low, and the air delivery efficiency is improved. Glass magnesium air pipe is made of adhesive structure, without flange connection, which greatly improves the airtightness of air pipe. Compared with iron sheet air pipe, it reduces air leakage of bite and flange, reduces air leakage rate of the air pipe, and improves air transmission efficiency. The air leakage rate of the glass magnesium air pipe is only 1\/10 of the iron sheet air pipe. What Is The Ventilation Duct<\/li>\n\n\n\n
      3. The glass magnesium air duct plate is manufactured mechanically with a smooth and flat surface, small friction coefficient, and low wind resistance, and the absolute roughness of the air duct surface is less than 0.2 mm. What Is The Ventilation Duct<\/li>\n<\/ol>\n\n\n\n
          \n
        • Glass magnesium duct can bring clean air (environmental protection duct) and improve indoor quality (IAQ). Glass magnesium duct can improve indoor air quality without rust, mildew, dust, bacteria, and fungi, dust and fiber, odor, granular and gaseous pollutants, and biological aerogel. What Is The Ventilation Duct<\/li>\n\n\n\n
        • \u062a\u062a\u0645\u064a\u0632 \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645 \u0627\u0644\u0632\u062c\u0627\u062c\u064a \u0628\u0623\u062f\u0627\u0621 \u0639\u0632\u0644 \u0635\u0648\u062a \u062c\u064a\u062f \u060c \u0645\u0639 \u0639\u0632\u0644 \u0635\u0648\u062a\u064a \u0645\u062a\u0648\u0633\u0637 \u064a\u0628\u0644\u063a 21 \u062f\u064a\u0633\u064a\u0628\u0644. \u0648\u0641\u064a \u0627\u0644\u0648\u0642\u062a \u0646\u0641\u0633\u0647 \u060c \u0641\u0625\u0646 \u0645\u0627\u062f\u0629 \u0627\u0644\u0639\u0632\u0644 \u0644\u0647\u0627 \u0648\u0638\u064a\u0641\u0629 \u062a\u0642\u0644\u064a\u0644 \u0627\u0644\u0627\u0647\u062a\u0632\u0627\u0632 \u0648\u0627\u0645\u062a\u0635\u0627\u0635 \u0627\u0644\u0635\u0648\u062a \u060c \u0648\u0627\u0644\u062a\u064a \u064a\u0645\u0643\u0646\u0647\u0627 \u0639\u0632\u0644 \u0648\u062a\u0642\u0644\u064a\u0644 \u0627\u0644\u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0646\u0627\u062a\u062c\u0629 \u0639\u0646 \u0627\u0647\u062a\u0632\u0627\u0632 \u0627\u0644\u0647\u0648\u0627\u0621 \u0648\u0627\u0644\u0622\u0644\u0627\u062a \u060c \u0648\u0627\u0644\u0642\u0636\u0627\u0621 \u0639\u0644\u0649 \u0627\u0644\u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0646\u0627\u062a\u062c\u0629 \u0639\u0646 \u0627\u0646\u0643\u0645\u0627\u0634 \u0648\u062a\u0648\u0633\u064a\u0639 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0623\u0644\u0648\u0627\u062d \u0627\u0644\u062d\u062f\u064a\u062f\u064a\u0629 \u060c \u0648\u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0627\u0644\u0628\u064a\u0626\u0629 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u0629 \u0647\u0627\u062f\u0626\u0629.<\/li>\n<\/ul>\n\n\n\n
          \"\u0623\u0646\u0627\u0628\u064a\u0628
          <\/figcaption><\/figure>\n\n\n\n
            \n
          • \u0645\u0646\u062a\u062c\u0627\u062a \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062c\u0648\u062f\u0629 \u0648\u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0623\u062f\u0627\u0621 \u0645\u0646 \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629<\/li>\n<\/ul>\n\n\n\n
              \n
            1. \u0623\u062f\u0627\u0621 \u0645\u0645\u062a\u0627\u0632 \u0644\u0644\u0646\u0627\u0631. \u0645\u062c\u0631\u0649 \u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645 \u0627\u0644\u0632\u062c\u0627\u062c\u064a \u0645\u0635\u0646\u0648\u0639 \u0645\u0646 \u0645\u0648\u0627\u062f \u063a\u064a\u0631 \u0639\u0636\u0648\u064a\u0629 \u063a\u064a\u0631 \u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u0627\u062d\u062a\u0631\u0627\u0642 \u0648\u0645\u0648\u0627\u062f \u0639\u0627\u0632\u0644\u0629 \u0644\u0644\u062d\u0631\u0627\u0631\u0629 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0639\u0645\u0644\u064a\u0629 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062a\u0642\u0646\u064a\u0629. \u0625\u0646\u0647\u0627 \u0641\u0626\u0629 \u0645\u0646 \u0627\u0644\u0645\u0648\u0627\u062f \u063a\u064a\u0631 \u0627\u0644\u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u0627\u062d\u062a\u0631\u0627\u0642 \u062a\u0645 \u0627\u062e\u062a\u0628\u0627\u0631\u0647\u0627 \u0645\u0646 \u0642\u0628\u0644 \u0645\u0631\u0643\u0632 \u0645\u0631\u0627\u0642\u0628\u0629 \u0627\u0644\u062c\u0648\u062f\u0629 \u0627\u0644\u0648\u0637\u0646\u064a\u0629 \u0648\u0641\u062d\u0635 \u0645\u0648\u0627\u062f \u0627\u0644\u0628\u0646\u0627\u0621 \u0644\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u062d\u0631\u0627\u0626\u0642 (\u0645\u0631\u0643\u0628 \u0645\u0646 \u0627\u0644\u062f\u0631\u062c\u0629 \u0627\u0644\u0634\u0627\u0645\u0644\u0629 A).<\/li>\n\n\n\n
            2. \u0623\u062f\u0627\u0621 \u0641\u0627\u0626\u0642 \u0627\u0644\u0642\u0648\u0629. \u062a\u062a\u0645\u064a\u0632 \u0642\u0646\u0627\u0629 \u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629 \u0628\u0642\u0648\u0629 \u0639\u0627\u0644\u064a\u0629 \u060c \u0648\u0642\u062f\u0631\u0629 \u062a\u062d\u0645\u0644 \u0623\u0643\u0628\u0631 \u0645\u0646 1000 \u0646\u064a\u0648\u062a\u0646 \u060c \u0648\u064a\u0645\u0643\u0646\u0647\u0627 \u062a\u062d\u0645\u0644 \u0636\u063a\u0637 \u0627\u0644\u0631\u064a\u0627\u062d 3000 \u0628\u0627\u0633\u0643\u0627\u0644 \u060c \u0648\u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0644\u0628\u064a \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0646\u0638\u0627\u0645 \u0647\u0648\u0627\u0621 \u0639\u0627\u0644\u064a \u0627\u0644\u0636\u063a\u0637 \u0648\u0645\u062a\u0648\u0633\u0637 \u0648\u0645\u0646\u062e\u0641\u0636. \u062a\u0642\u0644\u0644 \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0639\u0627\u0644\u064a\u0629 \u0623\u064a\u0636\u064b\u0627 \u0645\u0646 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u0646\u0647\u0627\u0626\u064a \u0641\u064a \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u0628\u0646\u0627\u0621 \u060c \u0628\u062d\u064a\u062b \u0644\u0627 \u064a\u0643\u0648\u0646 \u0645\u0646 \u0627\u0644\u0633\u0647\u0644 \u062a\u0644\u0641 \u0627\u0644\u0645\u0646\u062a\u062c.<\/li>\n\n\n\n
            3. Excellent moisture-proof and water-resistant performance. Glass magnesium duct is not afraid of water and does not rust and corrode in a humid environment. Even if immersed in water, it can still maintain high strength, with wet strength as high as 80%. What Is The Ventilation Duct<\/li>\n\n\n\n
            4. \u064a\u0645\u0643\u0646\u0647 \u062a\u062d\u0633\u064a\u0646 \u0627\u0644\u0645\u0633\u0627\u062d\u0629 \u0627\u0644\u0635\u0627\u0641\u064a\u0629 \u0644\u0644\u0633\u0642\u0641 \u0628\u0634\u0643\u0644 \u0641\u0639\u0627\u0644. \u062a\u062a\u0628\u0646\u0649 \u0642\u0646\u0627\u0629 \u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645 \u0627\u0644\u0632\u062c\u0627\u062c\u064a \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u063a\u064a\u0631 \u0627\u0644\u0641\u0644\u0646\u062c\u0629 \u060c \u0645\u0645\u0627 \u064a\u0648\u0641\u0631 \u0627\u0631\u062a\u0641\u0627\u0639 \u0627\u0644\u062d\u0627\u0641\u0629 \u0648\u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u062d\u0633\u0646 \u0645\u0633\u0627\u062d\u0629 \u0627\u0644\u0634\u0628\u0643\u0629 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u0629.<\/li>\n\n\n\n
            5. The weight of the glass magnesium duct is 7 kg per square meter, which is 30% lighter than that of the iron sheet duct. It can effectively reduce the building load. What Is The Ventilation Duct<\/li>\n\n\n\n
            6. \u0645\u0638\u0647\u0631 \u062c\u0645\u064a\u0644. \u064a\u062a\u0645 \u062a\u0648\u0635\u064a\u0644 \u0645\u062c\u0631\u0649 \u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645 \u0627\u0644\u0632\u062c\u0627\u062c\u064a \u0628\u0634\u0641\u0629 \u060c \u0645\u0639 \u0642\u0627\u0639 \u0645\u0633\u0637\u062d \u0648\u0645\u0638\u0647\u0631 \u062c\u0645\u064a\u0644. \u064a\u0645\u0643\u0646 \u0637\u0644\u0627\u0621 \u0627\u0644\u062c\u062f\u0627\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0628\u0623\u064a \u0637\u0644\u0627\u0621 \u0644\u062a\u0633\u0647\u064a\u0644 \u0627\u0644\u0632\u062e\u0631\u0641\u0629 \u0627\u0644\u062b\u0627\u0646\u0648\u064a\u0629.<\/li>\n\n\n\n
            7. No cold bridge, more energy-saving. Glass magnesium duct adopts no cold bridge construction technology, there is no cold bridge node, more energy-saving. What Is The Ventilation Duct<\/li>\n\n\n\n
            8. \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0641\u064a \u0627\u0644\u0645\u0648\u0642\u0639 \u060c \u0643\u0641\u0627\u0621\u0629 \u0627\u0644\u0628\u0646\u0627\u0621 \u0627\u0644\u0639\u0627\u0644\u064a\u0629 \u060c \u062a\u0648\u0641\u064a\u0631 \u0627\u0644\u0648\u0642\u062a. \u062a\u0639\u062a\u0645\u062f \u0645\u062c\u0631\u0649 \u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645 \u0627\u0644\u0632\u062c\u0627\u062c\u064a \u0639\u0644\u0649 \u062a\u0643\u0646\u0648\u0644\u0648\u062c\u064a\u0627 \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0641\u064a \u0627\u0644\u0645\u0648\u0642\u0639 \u060c \u0648\u0644\u0627 \u062a\u062d\u062a\u0627\u062c \u0625\u0644\u0649 \u0622\u0644\u0627\u062a \u0648\u0645\u0639\u062f\u0627\u062a \u0643\u0628\u064a\u0631\u0629 \u060c \u0648\u0627\u0644\u062a\u0639\u062f\u064a\u0644 \u0641\u064a \u0627\u0644\u0645\u0648\u0642\u0639 \u0633\u0631\u064a\u0639 \u060c \u0648\u064a\u0645\u0643\u0646 \u0644\u0644\u0643\u0641\u0627\u0621\u0629 \u0627\u0644\u0639\u0627\u0644\u064a\u0629 \u062a\u0648\u0641\u064a\u0631 \u0627\u0644\u0648\u0642\u062a.<\/li>\n<\/ol>\n\n\n\n
                \n
              • \u0648\u0632\u0646 \u0645\u062c\u0631\u0649 \u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645 \u0627\u0644\u0632\u062c\u0627\u062c\u064a \u0623\u0642\u0644 \u0645\u0646 \u0648\u0632\u0646 \u0627\u0644\u0642\u0646\u0648\u0627\u062a \u0627\u0644\u0645\u0631\u0643\u0628\u0629 \u0627\u0644\u0623\u062e\u0631\u0649.<\/li>\n<\/ul>\n\n\n\n
                \"\u0645\u062c\u0631\u0649
                <\/figcaption><\/figure>\n\n\n\n

                \u0628\u0627\u0644\u0625\u0636\u0627\u0641\u0629 \u0625\u0644\u0649 \u0642\u0646\u0648\u0627\u062a \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0627\u0644\u0645\u0630\u0643\u0648\u0631\u0629 \u0623\u0639\u0644\u0627\u0647 \u060c \u062a\u064f\u0633\u062a\u062e\u062f\u0645 \u0642\u0646\u0648\u0627\u062a \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0627\u0644\u062a\u0627\u0644\u064a\u0629 \u0623\u064a\u0636\u064b\u0627 \u0628\u0634\u0643\u0644 \u0634\u0627\u0626\u0639 \u0641\u064a \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u062a\u062f\u0641\u0626\u0629 \u0648\u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0648\u062a\u0643\u064a\u064a\u0641 \u0627\u0644\u0647\u0648\u0627\u0621:<\/p>\n\n\n\n

                  \n
                • \u0645\u0648\u0627\u062f \u0648\u0623\u0646\u0648\u0627\u0639 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u062a\u062f\u0641\u0626\u0629 \u0648\u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0648\u062a\u0643\u064a\u064a\u0641 \u0627\u0644\u0647\u0648\u0627\u0621<\/li>\n<\/ul>\n\n\n\n
                    \n
                  1. Galvanized iron sheet air duct. This is a kind of ventilation pipe which is used earlier and still used at present. It is made of galvanized iron sheet and is suitable for gas transmission with small moisture content. However, due to its early appearance, there are many imperfections, such as ease to rust, poor anti-corrosion ability, lack of noise attenuation and heat preservation function, so it is necessary to set up an additional muffler and heat preservation protective layer, As a result, the production cycle is long, and the installation is inconvenient, there will still be large noise when using, and the service life is short. What Is The Ventilation Duct<\/li>\n\n\n\n
                  2. FRP air duct. Glass fiber reinforced plastic air duct is a kind of ventilation duct made of relatively new magnesium oxychloride material, which is strengthened by glass fiber cloth. It is made after hydration reaction and curing. This kind of pipe has the characteristics of fire resistance, corrosion resistance, high hardness but heavyweight, and also does not have the function of noise elimination and heat preservation. It needs to add a muffler and heat preservation protective layer to ensure the better operation of the HVAC system. Therefore, more time and energy are needed in the production and installation, and it is not easy to change and modify once the design is completed, It brings some trouble to the user process. What Is The Ventilation Duct<\/li>\n\n\n\n
                  3. Composite fiberglass duct. Composite fiberglass duct, also known as the new super duct, is a new type of ventilation duct with scientific and technological content with the continuous progress of science and technology in recent years. Centrifugal fiberglass board is used as the main material, and anti-moisture aluminum foil cloth is set outside the pipe, glass fiber cloth is used inside, and glue spraying is carried out. The composite fiberglass duct is light in the material, small in volume, easy to install, space-saving, easy to modify, fire-resistant and moisture resistant, and can eliminate noise, heat preservation, reduce air leakage, easy to use, long life, high cost performance, which has good application advantages in the current ventilation duct. What Is The Ventilation Duct<\/li>\n<\/ol>\n\n\n\n
                    \"\u0645\u062c\u0631\u0649
                    <\/figcaption><\/figure>\n\n\n\n
                      \n
                    • \u0623\u062f\u0627\u0621 \u062a\u0637\u0628\u064a\u0642 \u0645\u062c\u0631\u0649 \u0627\u0644\u062a\u0647\u0648\u064a\u0629<\/li>\n<\/ul>\n\n\n\n
                        \n
                      1. \u0623\u062f\u0627\u0621 \u0627\u0644\u0639\u0632\u0644 \u0627\u0644\u062d\u0631\u0627\u0631\u064a<\/li>\n<\/ol>\n\n\n\n

                        The wall of the super air duct is a centrifugal fiberglass board with low thermal conductivity (0.029 w \/ m \/ k at 24 \u2103 and 0.04 w \/ m \/ k at 70 \u2103). In particular, the outer composite aluminum foil has a high heat reflection ability, and its strength and toughness are much better than aluminum foil, so it is not easy to break. Because the air duct wall is the insulation layer, the pipe adopts a tenon joint, T-shaped inner frame butt joint, and iron sheet plug joint (or outer flange connection), so that all parts of the air duct are evenly insulated without cold bridge phenomenon, and has good thermal insulation performance. However, the galvanized iron sheet air duct and the inorganic glass fiber reinforced plastic air duct have no heat preservation performance, so the heat preservation layer and the heat preservation protective layer should be added. What Is The Ventilation Duct<\/p>\n\n\n\n

                        2. \u0623\u062f\u0627\u0621 \u0627\u0644\u0646\u0627\u0631<\/p>\n\n\n\n

                        Super air duct is based on non-combustible glass fiber cotton board, using self-made flame retardant adhesive (national patent), aluminum foil cloth, and glass fiber cloth are compounded on both sides of the substrate. Therefore, the finished duct belongs to non-combustible material, which conforms to grade A of GB8624-1997 “classification method for flammability of building materials”, and has good fire performance. The galvanized iron sheet air duct and inorganic glass fiber reinforced plastic air duct are non-combustible materials, but whether their thermal insulation materials burn depends on the material. Originally, polystyrene board was used as an interlayer, because it would produce toxic gas under the effect of an external fire source, so it was gradually eliminated. At present, non-combustible insulation materials such as centrifugal glass wool are usually used as the interlayer. Due to strength and other problems, the product quality is not very stable. What Is The Ventilation Duct<\/p>\n\n\n\n

                        3. \u0623\u062f\u0627\u0621 \u0627\u0644\u0642\u0636\u0627\u0621 \u0639\u0644\u0649 \u0627\u0644\u0636\u0648\u0636\u0627\u0621<\/p>\n\n\n\n

                        The wall of super air duct is a kind of porous sound absorption material, which has good sound absorption effect for medium and high frequency sound waves. Some data show that the noise elimination capacity of super air duct can reach 18 dB \/ M ~ 21 dB \/ m when the medium frequency is 1 000 Hz ~ 2 000 Hz and the pipe diameter is 500 mm ~ 320 mm. It is a very good pipe type noise eliminator, which can eliminate the primary noise from air-conditioning equipment and the noise from valve body, valve body and air-conditioner With the extension of the pipe, the effect of the secondary noise produced by the pipe fittings is more obvious, so the special muffler can be omitted. However, the galvanized iron sheet air duct and the inorganic glass fiber reinforced plastic air duct have no noise elimination performance, so the muffler should be added. What Is The Ventilation Duct<\/p>\n\n\n\n

                        4. \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0631\u0637\u0648\u0628\u0629<\/p>\n\n\n\n

                        There are no perishable materials and components in the materials used for the super air duct. The outer surface of the air duct is made of moisture-proof aluminum foil cloth. Its moisture permeability is 0, and it has a strong anti-corrosion ability. The water absorption rate of fiberglass board is not more than 2%. When the pipe is in a humid environment for a long time, its noise elimination and heat preservation properties will not change. Because it is a porous material, it is necessary to prevent the pipe interior, pipe end, an incision from being soaked by water for a long time. The galvanized iron sheet air duct is easy to be affected by moisture, corrosion, and rust, which is more serious when conveying air for air conditioning with large moisture content. Especially when the air duct is made, the galvanized layer at the iron sheet bite is damaged, and it is not easy to make up an anti-corrosion treatment. There will be condensation at the place where the cold bridge is produced, which will cause corrosion to the pipeline, thus affecting its overall life. Due to the restriction of raw material ratio, the stability of moisture-proof ability of inorganic FRP air duct is poor. What Is The Ventilation Duct<\/p>\n\n\n\n

                        5. \u062a\u0633\u0631\u0628 \u0627\u0644\u0647\u0648\u0627\u0621<\/p>\n\n\n\n

                        \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u060c \u064a\u062a\u0645 \u062d\u0633\u0627\u0628 \u062d\u062c\u0645 \u062a\u0633\u0631\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0644\u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0646\u0633\u0628\u0629 \u0627\u0644\u0645\u0626\u0648\u064a\u0629 \u0644\u062d\u062c\u0645 \u0647\u0648\u0627\u0621 \u0627\u0644\u0646\u0638\u0627\u0645 \u0648\u0641\u0642\u064b\u0627 \u0644\u0637\u0648\u0644 \u0627\u0644\u0642\u0646\u0627\u0629 \u0648\u0636\u064a\u0642 \u0627\u0644\u0647\u0648\u0627\u0621. \u064a\u062c\u0628 \u0623\u0646 \u064a\u0643\u0648\u0646 \u0645\u0639\u062f\u0644 \u062a\u0633\u0631\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0644\u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 10% (\u0644\u0625\u0645\u062f\u0627\u062f \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0639\u0627\u0645 \u0648\u0646\u0638\u0627\u0645 \u0627\u0644\u0639\u0627\u062f\u0645). \u064a\u062a\u0645 \u062a\u0648\u0635\u064a\u0644 \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0641\u0627\u0626\u0642 \u0639\u0646 \u0637\u0631\u064a\u0642 \u0627\u0644\u0634\u0642 \u0648\u0627\u0644\u062a\u0623\u0631\u062c\u062d \u0648\u0627\u0644\u0644\u0635\u0642 \u060c \u0648\u064a\u062a\u0645 \u0625\u063a\u0644\u0627\u0642 \u0627\u0644\u0645\u0641\u0635\u0644 \u0628\u0634\u0631\u064a\u0637 \u0631\u0642\u0627\u0626\u0642 \u0627\u0644\u0623\u0644\u0648\u0645\u0646\u064a\u0648\u0645. \u0625\u0646 \u062a\u0633\u0631\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0645\u0646 \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 \u063a\u064a\u0631 \u0627\u0644\u0645\u0642\u0648\u0649 \u0647\u0648 \u0641\u064a \u0627\u0644\u0623\u0633\u0627\u0633 0 \u060c \u0648\u0645\u0639\u062f\u0644 \u062a\u0633\u0631\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0644\u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0642\u0648\u0649 \u0644\u0627 \u064a\u0632\u064a\u062f \u0639\u0646 1% \u060c \u0648\u0645\u0639\u062f\u0644 \u062a\u0633\u0631\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0644\u0644\u0646\u0638\u0627\u0645 \u0644\u0627 \u064a\u0632\u064a\u062f \u0639\u0646 2%. \u0639\u0646\u062f\u0645\u0627 \u064a\u0643\u0648\u0646 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0633\u0627\u0643\u0646 \u0641\u064a \u0627\u0644\u0623\u0646\u0628\u0648\u0628 500 PA \u060c \u0641\u0625\u0646 \u062a\u0633\u0631\u0628 \u0627\u0644\u0647\u0648\u0627\u0621 \u0644\u0643\u0644 \u0648\u062d\u062f\u0629 \u0645\u0633\u0627\u062d\u0629 \u0645\u0646 \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 \u064a\u0643\u0648\u0646 \u0623\u0642\u0644 \u0645\u0646 118 \u0645 3 \/ \u0633\u0627\u0639\u0629 \u0645 2.<\/p>\n\n\n\n

                        6. \u0627\u0644\u0648\u0632\u0646<\/p>\n\n\n\n

                        \u0627\u0644\u0648\u0632\u0646 \u0627\u0644\u062d\u062c\u0645\u064a \u0644\u0644\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0641\u0627\u0626\u0642 \u0647\u0648 64 \u0643\u062c\u0645 \/ \u0645 3 \u060c \u0648\u0627\u0644\u0648\u0632\u0646 \u0644\u0643\u0644 \u0648\u062d\u062f\u0629 \u0645\u0633\u0627\u062d\u0629 2.8 \u0643\u062c\u0645 \/ \u0645 2 (\u0633\u0645\u0643) \u03b4 = 25 \u0645\u0645 \u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0648\u0632\u0646 \u062d\u0627\u0645\u0644 \u0627\u0644\u0634\u0645\u0627\u0639\u0627\u062a (1.5 \u0643\u062c\u0645) \u060c \u0648\u0647\u0648 \u0627\u0644\u0623\u062e\u0641 \u0648\u0632\u0646\u0627\u064b \u0645\u0646 \u062c\u0645\u064a\u0639 \u0623\u0646\u0648\u0627\u0639 \u0645\u0648\u0627\u062f \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621. \u064a\u0628\u0644\u063a \u0648\u0632\u0646 \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0623\u0644\u0648\u0627\u062d \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u062c\u0644\u0641\u0646 7870 \u0643\u062c\u0645 \/ \u0645 3 \u060c \u0648\u0648\u0632\u0646 \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643\u064a \u0627\u0644\u0645\u0642\u0648\u0649 \u0628\u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629 \u063a\u064a\u0631 \u0627\u0644\u0639\u0636\u0648\u064a\u0629 2100 \u0643\u062c\u0645 \/ \u0645 3.<\/p>\n\n\n\n

                        7. \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643<\/p>\n\n\n\n

                        \u0627\u0644\u062c\u062f\u0627\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0644\u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0641\u0627\u0626\u0642 \u0645\u0635\u0646\u0648\u0639 \u0645\u0646 \u0642\u0645\u0627\u0634 \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629 \u060c \u0648\u062e\u0634\u0648\u0646\u0629 \u0627\u0644\u0633\u0637\u062d 0.2 \u0645\u0645 \u060c \u0648\u0647\u064a \u0623\u0643\u0628\u0631 \u0642\u0644\u064a\u0644\u0627\u064b \u0645\u0646 \u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u0642\u0627\u0633\u0629 \u0644\u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0635\u0641\u064a\u062d\u0629 \u0627\u0644\u062d\u062f\u064a\u062f\u064a\u0629. \u0639\u0646\u062f\u0645\u0627 \u062a\u0643\u0648\u0646 \u0633\u0631\u0639\u0629 \u0627\u0644\u0631\u064a\u0627\u062d \u0641\u064a \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 \u0623\u0642\u0644 \u0645\u0646 15 \u0645 \/ \u062b \u060c \u062a\u0643\u0648\u0646 \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0639\u0644\u0649 \u0637\u0648\u0644 \u0627\u0644\u0637\u0631\u064a\u0642 \u0623\u0642\u0644 \u0645\u0646 7% \u0645\u0642\u0627\u0631\u0646\u0629\u064b \u0628\u0635\u0641\u064a\u062d\u0629 \u0627\u0644\u062d\u062f\u064a\u062f (\u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u062a\u0632\u0627\u064a\u062f\u0629 \u0628\u0648\u0627\u0633\u0637\u0629 \u0627\u0644\u062f\u0639\u0627\u0645\u0629 \u0627\u0644\u0645\u0642\u0648\u0627\u0629 \u0641\u064a \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621) \u060c \u0641\u064a \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0627\u0644\u0639\u0627\u0645\u0629 \u0648\u0645\u062c\u0627\u0631\u064a \u062a\u0643\u064a\u064a\u0641 \u0627\u0644\u0647\u0648\u0627\u0621 \u060c \u062a\u0645\u062b\u0644 \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0639\u0644\u0649 \u0637\u0648\u0644 \u0627\u0644\u0637\u0631\u064a\u0642 \u062d\u0648\u0627\u0644\u064a 10% \u0641\u0642\u0637 \u0645\u0646 \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u062d\u0644\u064a\u0629 (\u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u062d\u0644\u064a\u0629 \u0644\u0644\u0642\u0646\u0627\u0629 \u0627\u0644\u0641\u0627\u0626\u0642\u0629 \u0648\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u062c\u0644\u0641\u0646 \u0647\u064a \u0646\u0641\u0633\u0647\u0627 \u0628\u0634\u0643\u0644 \u0623\u0633\u0627\u0633\u064a) \u060c \u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a \u0641\u0625\u0646 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0627\u0644\u0645\u062a\u0632\u0627\u064a\u062f\u0629 \u0644\u0642\u0646\u0627\u0629 \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629 \u0623\u0642\u0644 \u0645\u0646 1% \u0645\u0642\u0627\u0631\u0646\u0629 \u0645\u0639 \u0645\u062c\u0631\u0649 \u062d\u062f\u064a\u062f \u060c \u0648\u0627\u0644\u0630\u064a \u0644\u064a\u0633 \u0644\u0647 \u062a\u0623\u062b\u064a\u0631 \u0648\u0627\u0636\u062d \u0639\u0644\u0649 \u0646\u0638\u0627\u0645 \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 \u0628\u0627\u0644\u0643\u0627\u0645\u0644 \u0648\u064a\u0645\u0643\u0646 \u062a\u062c\u0627\u0647\u0644\u0647. \u062a\u0643\u0648\u0646 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 \u0644\u0645\u062c\u0627\u0631\u064a FRP \u063a\u064a\u0631 \u0627\u0644\u0639\u0636\u0648\u064a\u0629 \u0623\u0643\u0628\u0631 \u0645\u0646 \u0645\u0642\u0627\u0648\u0645\u0629 \u0642\u0646\u0627\u0629 \u0627\u0644\u0635\u0641\u064a\u062d\u0629 \u0627\u0644\u062d\u062f\u064a\u062f\u064a\u0629 \u060c \u0648\u0627\u0644\u062a\u064a \u062a\u0643\u0648\u0646 \u0642\u0631\u064a\u0628\u0629 \u0645\u0646 \u062a\u0644\u0643 \u0627\u0644\u0645\u0648\u062c\u0648\u062f\u0629 \u0641\u064a \u0645\u062c\u0631\u0649 \u0623\u0644\u0648\u0627\u062d \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629 \u0627\u0644\u0645\u0631\u0643\u0628\u0629.<\/p>\n\n\n\n

                        8. \u0642\u062f\u0631\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0644\u0642\u0646\u0627\u0629 \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629<\/p>\n\n\n\n

                        \u064a\u062a\u0643\u0648\u0646 \u0627\u0644\u062c\u062f\u0627\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0644\u0642\u0646\u0627\u0629 \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629 \u0627\u0644\u0645\u0631\u0643\u0628\u0629 \u0645\u0646 \u0642\u0645\u0627\u0634 \u0645\u0646 \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629 \u0627\u0644\u0645\u0631\u0643\u0628\u0629 \u060c \u0648\u0627\u0644\u0630\u064a \u0644\u062f\u064a\u0647 \u0627\u0644\u0642\u062f\u0631\u0629 \u0639\u0644\u0649 \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0645\u0646 \u0627\u0644\u0637\u064a\u0631\u0627\u0646. \u0641\u064a \u062d\u0627\u0644\u0629 \u0633\u0631\u0639\u0629 \u0627\u0644\u0631\u064a\u0627\u062d 15 \u0645 \/ \u062b \u0641\u064a \u0627\u0644\u0642\u0646\u0627\u0629 \u060c \u0644\u0627 \u062a\u0633\u0642\u0637 \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0627\u0644\u0645\u0648\u062c\u0648\u062f\u0629 \u0641\u064a \u0627\u0644\u062c\u062f\u0627\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0644\u0644\u0642\u0646\u0627\u0629 \u060c \u0648\u0627\u0644\u062a\u064a \u062a\u0644\u0628\u064a \u062a\u0645\u0627\u0645\u064b\u0627 \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0635\u062d\u064a\u0629 \u0627\u0644\u0648\u0637\u0646\u064a\u0629 \u0648\u062a\u0636\u0645\u0646 \u062c\u0648\u062f\u0629 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0648\u0627\u0644\u0628\u064a\u0626\u0629.<\/p>\n\n\n\n

                        \"\u0645\u062c\u0631\u0649
                        <\/figcaption><\/figure>\n\n\n\n
                          \n
                        • \u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0648\u0627\u062d\u062a\u0645\u0627\u0644 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u062a\u0647\u0648\u064a\u0629<\/li>\n<\/ul>\n\n\n\n
                            \n
                          1. \u0645\u062c\u0631\u0649 \u0647\u0648\u0627\u0621 \u0645\u0646 \u0627\u0644\u0635\u0627\u062c \u0627\u0644\u0645\u062c\u0644\u0641\u0646. \u0643\u0646\u0648\u0639 \u0645\u0646 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0627\u0644\u062a\u0642\u0644\u064a\u062f\u064a\u0629 \u060c \u0641\u0647\u064a \u0645\u0646\u0627\u0633\u0628\u0629 \u0628\u0634\u0643\u0644 \u0639\u0627\u0645 \u0644\u0645\u0634\u0627\u0631\u064a\u0639 HVAC \u0630\u0627\u062a \u0627\u0644\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629 \u0644\u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0628\u064a\u0626\u064a\u0629. \u0625\u0646\u0647\u0627 \u0645\u0646\u0627\u0633\u0628\u0629 \u0644\u0646\u0642\u0644 \u0627\u0644\u063a\u0627\u0632 \u0627\u0644\u062c\u0627\u0641 \u0648\u063a\u064a\u0631 \u0627\u0644\u0642\u0627\u0628\u0644 \u0644\u0644\u062a\u0622\u0643\u0644. \u0642\u064a\u062f \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u060c \u0628\u0633\u0628\u0628 \u0627\u0644\u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0643\u0628\u064a\u0631\u0629 \u0648\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0639\u0632\u0644 \u0644\u0627 \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0633\u062a\u0645\u0631 \u0644\u0641\u062a\u0631\u0629 \u0637\u0648\u064a\u0644\u0629 \u060c \u0639\u0644\u0649 \u0627\u0644\u0645\u062f\u0649 \u0627\u0644\u0637\u0648\u064a\u0644 \u060c \u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u0628\u062f\u0627\u0644\u0647 \u062a\u062f\u0631\u064a\u062c\u064a\u0627\u064b \u0628\u0623\u0646\u0627\u0628\u064a\u0628 \u062a\u0647\u0648\u064a\u0629 \u0645\u0646 \u0645\u0648\u0627\u062f \u062c\u062f\u064a\u062f\u0629.<\/li>\n\n\n\n
                          2. \u0645\u062c\u0631\u0649 \u0647\u0648\u0627\u0621 FRP. \u0625\u0646\u0647 \u0646\u0648\u0639 \u0645\u0646 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0627\u0644\u0645\u062a\u0623\u062e\u0631\u0629 \u0639\u0646 \u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0635\u0627\u062c \u0627\u0644\u0645\u062c\u0644\u0641\u0646. \u064a\u062a\u0645\u064a\u0632 \u0628\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0648\u0642\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u062d\u0631\u0627\u0626\u0642 \u0648\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0622\u0643\u0644. \u0625\u0646\u0647\u0627 \u0645\u0646\u0627\u0633\u0628\u0629 \u0644\u0647\u0646\u062f\u0633\u0629 HVAC \u0641\u064a \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0637\u0644\u0642 \u0648\u0627\u0644\u0628\u064a\u0626\u0629 \u0627\u0644\u0645\u0633\u0628\u0628\u0629 \u0644\u0644\u062a\u0622\u0643\u0644. \u062a\u0645 \u062a\u0641\u0636\u064a\u0644 \u0645\u0638\u0647\u0631\u0647 \u0645\u0646 \u0642\u0628\u0644 \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0627\u0644\u0645\u0633\u062a\u0647\u0644\u0643\u064a\u0646. \u0648\u0645\u0639 \u0630\u0644\u0643 \u060c \u0646\u0638\u0631\u064b\u0627 \u0644\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0641\u0639\u0644\u064a \u0627\u0644\u0645\u0642\u0627\u0648\u0645 \u0644\u0644\u0631\u0637\u0648\u0628\u0629 \u0644\u0645\u062c\u0627\u0631\u064a \u0627\u0644\u0647\u0648\u0627\u0621 FRP \u060c \u0648\u0644\u0645 \u064a\u0635\u0644 \u0623\u062f\u0627\u0621 \u0627\u0644\u062c\u0648\u062f\u0629 \u0627\u0644\u0639\u0627\u0645 \u0625\u0644\u0649 \u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0645\u062a\u0648\u0642\u0639 \u060c \u0648\u0644\u0623\u0646 \u0633\u0639\u0631\u0647 \u064a\u062a\u0645 \u062d\u0633\u0627\u0628\u0647 \u0628\u0627\u0644\u0648\u0632\u0646 \u060c \u0641\u0625\u0646 \u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u062a\u0633\u0639\u064a\u0631 \u063a\u064a\u0631 \u0627\u0644\u0645\u0639\u0642\u0648\u0644\u0629 \u0647\u0630\u0647 \u062a\u062c\u0639\u0644 \u0633\u0639\u0631 \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 FRP \u0623\u063a\u0644\u0649 \u0644\u0627 \u064a\u062a\u0646\u0627\u0633\u0628 \u0628\u0634\u0643\u0644 \u0645\u0628\u0627\u0634\u0631 \u0645\u0639 \u0642\u064a\u0645\u062a\u0647 \u0627\u0644\u0641\u0639\u0644\u064a\u0629 \u060c \u0644\u0630\u0644\u0643 \u0627\u0646\u062e\u0641\u0636 \u0639\u062f\u062f \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u064a\u0646 \u0641\u064a \u0627\u0644\u0633\u0646\u0648\u0627\u062a \u0627\u0644\u0623\u062e\u064a\u0631\u0629. \u0645\u0639 \u0632\u064a\u0627\u062f\u0629 \u062a\u0637\u0648\u064a\u0631 \u0627\u0642\u062a\u0635\u0627\u062f \u0627\u0644\u0633\u0648\u0642 \u060c \u064a\u062c\u0628 \u062a\u063a\u064a\u064a\u0631 \u0645\u0627\u062f\u0629 \u0648\u0633\u0639\u0631 \u0645\u062c\u0631\u0649 \u0627\u0644\u0647\u0648\u0627\u0621 FRP \u0645\u0646 \u0623\u062c\u0644 \u0627\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0645\u0633\u0627\u062d\u0629 \u0644\u0644\u0628\u0642\u0627\u0621 \u0648\u0627\u0644\u062a\u0646\u0645\u064a\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u062f\u0649 \u0627\u0644\u0637\u0648\u064a\u0644.<\/li>\n\n\n\n
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                            What Is The Ventilation Duct What is the common ventilation duct in the ventilation and air conditioning system? What are<\/p>","protected":false},"author":1,"featured_media":11414,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[200],"tags":[182,202,203,180,201],"class_list":["post-11402","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ventilation-duct","tag-hvac-air-duct","tag-iron-sheet-air-duct","tag-rectangular-duct","tag-round-duct","tag-ventilation-duct"],"jetpack_featured_media_url":"https:\/\/duct.harsle.com\/wp-content\/uploads\/2021\/06\/What-are-the-properties-of-ventilation-ducts.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/duct.harsle.com\/ar\/wp-json\/wp\/v2\/posts\/11402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/duct.harsle.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/duct.harsle.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/duct.harsle.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/duct.harsle.com\/ar\/wp-json\/wp\/v2\/comments?post=11402"}],"version-history":[{"count":0,"href":"https:\/\/duct.harsle.com\/ar\/wp-json\/wp\/v2\/posts\/11402\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/duct.harsle.com\/ar\/wp-json\/wp\/v2\/media\/11414"}],"wp:attachment":[{"href":"https:\/\/duct.harsle.com\/ar\/wp-json\/wp\/v2\/media?parent=11402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/duct.harsle.com\/ar\/wp-json\/wp\/v2\/categories?post=11402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/duct.harsle.com\/ar\/wp-json\/wp\/v2\/tags?post=11402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}