摘要
文章针对严寒季节供暖期太阳辐照及环境温度变化所引起的供热负荷波动问题,通过数学建模及仿真方法,分析供暖期典型工况,通过调节集热器流量、热泵运行时间以及切换供热模式,以热泵为转换枢纽对系统控制策略进行优化,并对比分析调节前后系统的运行特性。结果表明:调节后的系统提高了在环境温度低于-8℃、太阳辐照强度低于400 W/m^(2)气候条件下的供热能力,能够满足严寒地区室内供暖需求;对比寒冷气候下的系统能耗和热泵COP,蓄热-热泵系统COP值提升至2.8;调节后系统全年能耗稍有增加,但寒冷气候时系统的供热能力得到提高,同时热泵的低温运行性能也得到提高。
The variation of solar radiation and environmental temperature in the heating period of cold season lead to the heating load fluctuation.In the presented study,the typical operation conditions of heating period is analyzed through mathematical modeling and simulation methods.The system controlling strategy is optimized by adjusting the flow of collector,the running time of heat pump and switching the heating mode.Then,the operation characteristic of the system before and after regulations are compared.It is found that system after regulation is capable of satisfying the indoor heating need of cold area,achieving higher heating performance when the environmental temperature and solar irradiance are lower than-8℃and 400 W/m^(2)respectively.Besides,when compared with the system energy consumption and COP of heat pump under cold climate,the COP value of heat storage-heat pump system is increased to 2.8.Although the annual system energy consumption is increased slightly after adjustments,the heating performance of system under cold climate is enhanced significantly.Meanwhile,the low-temperature operation performance of heat pump is improved as well.
作者
闫素英
潘文丽
高世杰
王群
赵晓燕
王胜捷
马瑞
Yan Suying;Pan Wenli;Gao Shijie;Wang Qun;Zhao Xiaoyan;Wang Shengjie;Ma Rui(College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Inner Mongolia Renewable Energy Key Laboratories,Hohhot 010051,China)
出处
《可再生能源》
CAS
CSCD
北大核心
2022年第5期611-618,共8页
Renewable Energy Resources
基金
国家自然科学基金资助项目(No.51766012)
内蒙古科技重大专项(2019ZD014)
内蒙古自然科学基金项目(No.2019MS05025)
内蒙古财政创新资助项目(2017年度)。
