制冷管道隔热层的计算,通常采用如下两种方法:一是以管道隔热层外表面不结露为依据的最小厚度计算法;二是以隔热工程费用开支最小为目标的经济厚度计算法。由于我国幅员广大,气象条件和其它计算参数因地而异,且差别较大,应用上述某种计算方法确定不同地区不同工况制冷管道隔热层厚度并不完全合适。这是因 The calculation of the insulating layer of the cooling pipe usually adopts the following two methods: one is the minimum thickness calculating method based on the noncondensing of the outer surface of the pipe insulating layer; the other is the calculation of the economic thickness aiming at the minimum cost of the heat insulating engineering law. Due to the vast territory of our country, the meteorological conditions and other calculation parameters vary from place to place, and the difference is large. It is not entirely suitable to apply some of the above calculation methods to determine the thickness of the insulating layer in different conditions of refrigeration pipelines in different areas. This is because