A by-pass capillary tube was added on the discharge pipe behind the four-way valve and a tube was added in an accumulator in a heat pump system to solve the problem.
在热泵系统四通换向阀后的排气管上加旁通毛细管和在气液分离器中加过冷管。
Fouling of heat exchangers and fouling of water system piping is a widespread problem in the industry water system.
在工业水系统领域普遍存在着水系统管道、换热设备结垢问题。
The heat system may have the problem of design, construction and the pipeline work due to history, technology and management.
由于历史、技术、管理上的原因，在用热网管道可能存在设计、施工、管道组成件等方面的问题。
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