Discusses design requirements and some important points of duct insulation and vapour barrier in cold air distribution systems, and presents in details the concerns in construction of duct insulation.
探讨了低温送风空调系统中风管保冷与隔汽层的设计要求及设计中的注意事项，并详细论述了低温风管保冷层施工中应注意的问题。
A typical dual duct system would have 2 zone supply air paths - one for the hot air and one for the cold air - and 1 zone return air path.
而对于典型的双管系统，则由两条区域送风路径(一条用于热空气、一条用于冷空气)和一条区域回风路径组成。
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