Energy saving analysis of water system of a water-source heat pump multi-split system

In view of the disadvantages of the traditional water-source heat pump multi-split system, such as small temperature difference between supply and return water and large circulation energy consumption, taking an application project as an example, this paper proposes a water-source heat pump multi-split system with distributed mixed water pumps. The pipe fitting composition, operation control mechanism and annual operation energy saving of the system are analysed, and the economic comparison is made. The results show that compared with traditional water-source heat pump multi-split system, the energy-saving rate of this system is as high as 6.27%, and the payback period of investment is about 4.5 years.