The capillarypump in this loop required to be heated actively to force fluid flow, and consume some power as well.
该回路需要对毛细泵主动加热促使工质流动，需要消耗一定的功率。
2
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.