低温空气源热泵双电子膨胀阀控制策略研究  

The Strategy Research of Double Expansion Valve for Low Temperature Air Sources Pump

作　　者：窦秀华 魏忠鑫 张伟东 吴卫平 张伟 DOU Xiu-hua;WEI Zhong-xin;ZHANG Wei-dong;WU Wei-ping;ZHANG Wei(Shang Dong Airpower Energy Saving Equipment Co.,Ltd)

机构地区：[1]山东阿尔普尔节能装备有限公司

出　　处：《建筑热能通风空调》2018年第9期82-84,81,共4页Building Energy & Environment

摘　　要：针对空气源热泵在环境温度过低时出现的制热量衰减的问题,提出了一种采用双电子膨胀阀控制主回路以及补焓回路节流量的控制方法。该方法主回路采用排气过热度控制,补焓回路采用经济器过热度控制,然后经过两者协同控制,达到整个热泵系统的性能最优。实际实验室的测试结果表明了该算法的可行性及有效性。The air sources pump attenuated heating capacity when the environment temperature was too low, so a control strategy of double expansion valve with the flow rate of the main circuit and the complement enthalpy loop was proposed in this paper. The main circuit of the system was used to control the exhaust superheat, and the auxiliary path was used to control the superheat of the economizer, and then the cooperation of the two, the optimal performance of the whole heat pump system was achieved. The test results showed that the algorithm was reliable and effective.

关 键 词：空气源热泵 双电子膨胀阀 排气过热度 经济器过热度 协同控制 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]