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排煙管道設計的相關要求

來源:http://www.staywellfit.com/     發布時間:2024-02-28  

通風設備壓縮機正常范圍:壓縮機在夏季制冷狀態下,排氣溫度比較高,不可用手觸摸。制冷系統的排氣溫度不超過125℃左右。故障:排氣溫度超高原因,是壓縮機的吸氣溫度超高,或是冷凝溫度超高所造成,必須引起注意。上海風管加工排氣溫度過低,手摸排氣管不燙手,這說明吸氣溫度特別低,壓縮機可能濕行程運行或系統制冷劑特少情況下運行。壓縮機濕行程運行容易損壞閥結構;制冷劑特少情況運行,會影響電動機的繞組散熱,加速絕緣材料的老化。

Normal range of ventilation equipment compressor: When the compressor is in the cooling state in summer, the exhaust temperature is relatively high and cannot be touched by hand. The exhaust temperature of the refrigeration system shall not exceed around 125 ℃. Fault: The reason for the high exhaust temperature is due to the high suction temperature of the compressor or the high condensation temperature, which must be taken seriously. The exhaust temperature of Shanghai air duct processing is too low, and touching the exhaust pipe does not make it too hot. This indicates that the suction temperature is particularly low, and the compressor may run wet or with very little refrigerant in the system. The wet stroke operation of the compressor can easily damage the valve structure; Operating with very little refrigerant can affect the heat dissipation of the motor winding and accelerate the aging of insulation materials.

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通風設備壓縮機殼體溫度正常范圍:上機殼受吸入蒸氣的影響,溫度比較低,處在微熱或稍涼范圍,估計在30℃左右,在吸氣管的周圍局部機殼表面有結露水的可能。下機殼內電動機的發熱量和被冷凍油帶出的摩擦熱量,上海風管加工廠主要由蒸氣帶出機殼。故障:機殼表面溫度超過正常范圍,主要是制冷系統的吸氣溫度過高。過高的熱蒸氣迸入壓縮機,吸收機殼內熱量后,使蒸氣的溫度更高,從而使機殼的溫度上升。機殼表團溫度低于正常范圍,其原因是吸氣溫度太低。它對冷凍油和電動機繞組的冷卻都有利,但制冷量有所下降。

The normal temperature range of the ventilation equipment compressor housing: The upper casing is affected by the inhalation of steam, and the temperature is relatively low, in a slightly hot or slightly cool range, estimated to be around 30 ℃. There is a possibility of condensation on the surface of the local casing around the suction pipe. The heat generated by the electric motor inside the lower casing and the frictional heat carried out by the refrigeration oil are mainly carried out of the casing by steam at the Shanghai air duct processing plant. Fault: The surface temperature of the casing exceeds the normal range, mainly due to the high suction temperature of the refrigeration system. Excessive hot steam rushes into the compressor, absorbing the heat inside the casing, causing the temperature of the steam to rise, thereby increasing the temperature of the casing. The temperature of the casing cluster is below the normal range, due to the low suction temperature. It is beneficial for the cooling of refrigeration oil and motor windings, but the cooling capacity has decreased.

排煙管道送風口設置在實際需要降溫的地方,風口設計風量即使以其要降溫地方所需的送風量,風口規格可根據風量與風口風速來確定,螺旋風管廠家送風口材質可采用塑料或鋁合金等制品,出風口風咀形式可根據實際情況采用多種形式,選擇錦煜空調專用風咀,風口喉部平均流速控制在3-6m/s,(采用4-5m/s的流速)。送風管的規格一般采用假定流速法設計,共板風管主風管保持在8-10m/s,支風管6-8m/s,*末端風管保持4-6m/s,所設計的風管總體上要求既經濟又能達到*低的風阻和噪聲,使錦煜冷風機的送風量盡量達到*大值,風管彎曲半徑一般不小于風管直徑的兩倍,以減少管通風阻力,送風管道的長度應根據不同型號的錦煜空調風壓不同的特點進行設計。所設計的排煙管道盡量取直,避免不必要的拐彎和分支管,上海通風管道以減少管道局部阻力,從平面布置和經濟角度上考慮,能不用風管的地方就不用風管,必須使用風管的地方盡量把風管設計短些,較長管道根據風量設計成多段不同規格的風管,采用變徑管連接,變徑管的設置不宜過多,一風管廠家般整根不超過四個,變徑管長由“>2(D-d)”來確定,送風管道與冷風機主機出風口連接處應密封好;室外管道過長宜設計保溫,室內管道一般不須保溫

The smoke exhaust duct air supply outlet is set in the actual place that needs to be cooled. The designed air volume of the air outlet can be determined based on the air volume and the air speed of the outlet. The material of the spiral air duct manufacturer's air supply outlet can be plastic or aluminum alloy, and the form of the air outlet nozzle can be in various forms according to the actual situation. It is recommended to choose a dedicated air outlet for Jinyu air conditioning, with an average flow rate at the throat of the air outlet controlled at 3-6m/s, (It is recommended to use a flow rate of 4-5m/s). The specifications of the air supply duct are generally designed using the assumed flow rate method. The main air duct of the common plate air duct is kept at 8-10m/s, the branch air duct is kept at 6-8m/s, and the end air duct is kept at 4-6m/s. The designed air duct is generally required to be both economical and achieve low wind resistance and noise, so that the air supply volume of the Jinyu cold air fan can reach the maximum value possible. The bending radius of the air duct is generally not less than twice the diameter of the air duct to reduce the ventilation resistance of the duct, The length of the air supply duct should be designed according to the different characteristics of the air pressure of different models of Jinyu air conditioners. The designed smoke exhaust pipes should be as straight as possible to avoid unnecessary bends and branch pipes. Shanghai ventilation pipes should be designed to reduce local resistance of the pipes. From the perspective of layout and economy, air ducts should not be used in areas where air ducts are not necessary. Air ducts should be designed as short as possible in areas where air ducts must be used. Long pipes should be designed into multiple sections of different specifications of air ducts according to the air volume, and variable diameter pipes should be used for connection. The number of variable diameter pipes should not be too many, A manufacturer of air ducts generally does not exceed four in a single piece, and the length of variable diameter pipes is determined by ">2 (D-d)". The connection between the supply air duct and the outlet of the cold air fan should be sealed properly; Outdoor pipelines that are too long should be designed with insulation, while indoor pipelines generally do not require insulation

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