Performance analysis of solar coupled sewage source heat pump system based on TRNSYS
Taking a sewage treatment station in Xuzhou area as the research object,it seeks transformation schemes in response to energy conservation and emission reduction.In order to integrate with the building,flat-plate solar collectors are arranged on its roof,which not only provide heat for the sewage treatment station,but also provide low-temperature heat medium for the sewage source heat pump unit,improve the evapo-rator inlet temperature of the heat pump unit,and thus improve the heating efficien-cy.The operation model of the solar-coupled sewage source heat pump system is built based on TRNSYS.The research shows that the energy consumption of the system is 15.3 MW,the COP of the system is 4.0,and the performance is superior.Compared with the sewage source heat pump system,the coupling system operates more stably,the sys-tem performance is greatly improved,and the energy-saving effect is obvious.The COP of the coupling system is 10.5%higher than that of the sewage source heat pump system,and the energy consumption is 11.1%lower.The evaluation factor of the coupling system is 0.983 2,which is the optimal heating scheme.The system ensures the stability of the heat-ing,while taking into account its economy,energy conservation,reliability and safety.
flat solar collectorsewage source heat pumpTRNSYSenergy consump-tioncoefficient of performance
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