摘要
对某地埋管地源热泵系统冬季供热工况进行了优化实验。结果表明,系统连续运行时,6 h后机组和地埋管换热器达到稳定状态,地埋管换热器单位埋深的取热量为24.5W/m;系统间歇运行时,土壤温度能及时恢复,系统的COP提高4.34%,机组的COP提高3.23%,2台压缩机工作时系统和机组的COP值最大,比4台压缩机工作时分别高12.2%和11%,2台压缩机运行、循环泵采用变频控制时,系统COP提高了12.5%;3台压缩机运行、循环泵采用变频控制时,系统COP提高了6.42%。
Makes a heating condition optimizing experiment for a ground-source heat pump system,and the results show that heat pump and underground heat-exchanger reach steady-state after 6 hours and heat absorption of underground heat-exchanger per meter depth is 24.5 W/m under the continuous operation condition;the ground temperature can restore in time;the COP of the system is increased by 4.34% and the COP of the heat pump is increased by 3.23%;the COP of the system and heat pump are highest when two compressors operating,respectively are 12.2% and 11%higher than that of four compressors;the COP of the system is increased by 12.5% when two compressors operate and the circulating pumps adopt the inverter control and the COP of the heat pump is increased by 6.42% when three compressors operate and the circulating pumps adopt the inverter control under intermittent operation condition.
出处
《暖通空调》
北大核心
2011年第8期77-80,共4页
Heating Ventilating & Air Conditioning
基金
哈尔滨市科技创新人才研究专项资金项目(编号:2007RFXXG015)
关键词
地源热泵
运行优化
地埋管换热器
变频控制
ground-source heat pump
operating optimization
underground heat exchanger
variable frequency control
