摘要
本文对空气源热泵结霜工况下的动态特性和季节性能进行了理论研究,将室外换热器的结霜视为准动态过程,建立了空气源热泵结霜工况下的动态分布参数模型。利用近30年的气象资料,计算了北京、上海、广州、南京四个城市的季节能效比,计算结果表明:在计算冬季供热季节性能系数时,如果不考虑结霜将产生一定程度的误差。这为以后实验研究和优化设计提供了理论基础。
In this paper the dynamic characteristics and seasonal performance of air source heat pump under frost conditions were analyzed. Regarding the frost accumulation on the outdoor heat exchanger as a quasi-dynamic process, the dynamic distributed parameter model of the air source heat pump under the frost condition was presented. According to the weather data of nearly thirty years, the seasonal efficiency ratios of Beijing, shanghai, Guangzhou and Nanjing were calculated. The results indicate that the certain error will be produced when the heating seasonal performance factor is calculated if the frost is not considered. It is provided a theoretical foundation for the future experimental study and optimization design.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2009年第4期557-561,共5页
Journal of Engineering Thermophysics
基金
国家高技术研究发展计划(863计划)项目(No.2007AA05Z223)
教育部博士点基金项目(No.200800560041)
天津市科技支撑项目(No.07ZCGYSF02600No.07ZCGYSF01500)
关键词
空气源热泵
结霜
季节性能
air source heat pump
frosting
seasonal performance
