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。

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Compared with the system of supply power, the solution of the critical problem within the system of supply heat which is how to measure quantity of heat is inicated.

通过与热电系统比较，提出改变目前供热系统现状的关键，即用户的热能计量问题。

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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。

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