Energy-saving Design and Operation Strategy of Solar Water Heating System Assisted with Air-source Heat Pump

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Abstract

At present, the widely combined use of air-source heat pump and solar water heating system have improved the energy utilization efficiency of the whole hot water system. However, the best combination of the two has not been found, and the original combination has not maximized the utilization of solar energy and precise control of water supply. In order to solve this problem, we established a solar-air source heat pump water heater by taking the domestic hot water system in a college dormitory in Hengyang area. The Transient System Simulation Tool (TRNYSY) was used to build a simulation model. We proved the feasibility of the system by its heat transfer rate and performance parameter. And we numerically analyzed the monthly total electricity consumption and total annual electricity consumption of the system equipment to verify its economy. The simulation results showed that the solar-air source heat pump water heater could effectively improve the problem of low joint efficiency of hot water system, avoid energy waste, and verify the correctness and effectiveness of the established system.

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APA

Zhang, X., Hu, Y., Wang, H., Xiang, X., & Ran, X. (2019). Energy-saving Design and Operation Strategy of Solar Water Heating System Assisted with Air-source Heat Pump. In IOP Conference Series: Earth and Environmental Science (Vol. 332). Institute of Physics Publishing. https://doi.org/10.1088/1755-1315/332/2/022062

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