摘要
目的研究寒冷地区水源热泵系统的实际应用效果,分析影响系统运行能效的主要参数及参数影响因素.方法测量了寒冷地区采暖季某办公楼水源热泵系统运行的介质温度、流量和耗电量等基础参数,并通过计算获取了供、取热量和能效比等间接参数.分析了热泵系统的实际运行情况,确定了影响系统能效比的主要参数.通过相关性分析识别出主要参数的核心影响因素.结果水源热泵系统能效比(EER)平均在1.8左右;机组能效比(COP)平均在3.6左右.系统部分运行阶段取热能力不足;水泵能耗偏高,耗电输热比偏大.热泵机组COP与水泵耗电输热比是影响系统能效的主要参数.主机负荷率与用户侧温差是主要参数的核心影响因素.结论办公楼水源热泵系统运行稳定,提高机组COP与降低水泵耗电输热比是提升系统能效的关键.
The main parameters affecting the energy efficiency of the system and the influencing factors of the parameters are analyzed to study the practical application effect of water source heat pump system in cold regions.The basic parameters such as medium temperature,flow rate and power consumption of the water source heat pump system of an office building during the heating season in the cold regions were measured to obtain by formula calculation the indirect parameters such as heat supply,heat extraction and energy efficiency ratio.The main parameters affecting the energy efficiency ratio of the system were determined by the actual operation of the heat pump system analyzed.The core influencing factors of the main parameters were identified through correlation analysis.The energy efficiency ratio(EER)of the water source heat pump system averages around 1.8,heat pump unit energy efficiency ratio(COP)averages around 3.6.The partial operation stage of the system has insufficient heat extraction capacity;pump energy consumption is a little high and the ratio of electricity consumption to transferred heat quantity of the circulating water pump is too large.Heat pump unit COP and ratio of electricity consumption to transferred heat quantity are the main parameters affecting system energy efficiency.The unit load rate and temperature difference of the user side are the core influencing factors of the main parameters.The water source heat pump system operation of the office building is stable.Increasing the unit COP and reducing the ratio of electricity consumption to transferred heat quantity of the pump are the key to improving system energy efficiency.
作者
刘馨
李画
冯国会
梁传志
LIU Xin;LI Hua;FENG Guohui;LIANG Chuanzhi(School of Municipal and Environment Engineering,Shenyang Jianzhu University,Shenyang,China,110168;Center of Science and Technology and Industrialization Development,Ministry of Housing and Urban-rural Development of the People's Republic of China,Beijing,China,100835)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2019年第4期706-714,共9页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家重点研发计划项目(2017YFB0604005)
辽宁省科技厅资助项目(20150168)
辽宁省自然科学基金指导计划项目(201601211)
关键词
办公楼
水源热泵系统
能效比
相关性分析
office building
water source heat pump system
energy efficiency ratio
correlation analysis
