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- W4384997444 abstract "With the increasing application of geothermal and solar energy in northern regions of China, it has become one of the main clean heating technologies for rural primary schools. However, the mismatch in equipment capacity has led to poor operating effect and economic efficiency of such systems. This paper puts forward experimental and analysis on a solar assisted ground source heat pump system in a primary school in Beijing's Daxing District. And then, to address the above issues, a TRNSYS model is established and verified to optimize the system strategy and form during 15 years period. What’ more, the main factors affecting solar collector selection are screened by sensitivity analysis. And through the step-by-step regression analysis, the collector selection correction model based on the coefficient Km is obtained. The results show that the temperature difference of the optimized collector control is 10 °C/1°C, and that of the supplementary heat is 20 °C/1°C. The applicable scenarios of the two system forms are different, and the energy efficiency of the system operation is increased by 23% and 23.4% respectively. In addition, the revised model ensures the balance of soil temperature for 15 years of operation under the condition of considering multiple elements, which provides a reference for the matching and selection of equipment for the same type of project in the future." @default.
- W4384997444 created "2023-07-22" @default.
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- W4384997444 date "2023-09-01" @default.
- W4384997444 modified "2023-09-24" @default.
- W4384997444 title "System optimization and mode modification of the solar assisted ground source heat pump system for primary schools in northern rural areas of China" @default.
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- W4384997444 doi "https://doi.org/10.1016/j.solener.2023.111879" @default.
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