Abstract
This paper studies the heating energy efficiency and optimization of a solar-air source heat pump (SASHP). Through system simulation, the energy efficiency of the SASHP is compared with other heating methods. The results show that SASHP has higher energy efficiency. We also found that in the SASHP, the air source heat pump (ASHP) is involved in heating 46% of the time. Therefore, we suggest optimizing the energy consumption of the ASHP to improve the system’s energy efficiency. In addition, lowering the supply water temperature can also reduce the system’s heating energy consumption. When the supply water temperature is lowered from 60°C to 48°C, the COP is increased from 1.98 to 2.83, which is a 31% improvement. Our research provides theoretical support for the application of SASHP and provides new ideas for achieving green and low-carbon heating.
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