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A combined system of refrigeration and heating unit with seasonal solar thermal storage was presented in this paper. Based on the climate character of the Zhongyuan region, China, the system’s performance in rural residences was studied. A computational program was established based on the DEST software, the solar heat collecting capacity, heat collecting efficiency, and other parameters were analyzed. The results showed that the system can supply 76.28% heating load and 40.14% cooling load, when the total collector surface area equals to 40 m and heat collecting temperature is 80 °C. The results will provide theoretical support for the system’s optimization.

Analysis of solar seasonal storage in rural residences with Zhongyuan region as an example