中间补气空气源热泵热风机节流阀控制方法的实验研究  

Experimental research on throttle valve control method of enhanced vapor injection heat pump air heater

作　　者：侯庆林 陈超 李明洋 王振宝 刘宏举 HOU Qinglin;CHEN Chao;LI Mingyang;WANG Zhenbao;LIU Hongju(State Key Laboratory of Digital Multimedia Technology,Qingdao 266100)

机构地区：[1]数字多媒体技术国家重点实验室,山东青岛266100

出　　处：《家电科技》2021年第6期56-59,共4页Journal of Appliance Science & Technology

摘　　要：中间补气技术在改善空气源热泵机组的低温制热能力不足、低温制热压缩机排气温度过高等方面具有良好的作用,针对闪发器中间补气热泵热风机系统的电子膨胀阀节流控制方法进行了实验研究。研究表明:闪发器前的电子膨胀阀可采用排气过热度为目标参数进行控制,闪发器后的电子膨胀阀可采用吸气过热度为目标参数进行控制,并通过实验方法获得了本实验系统在给定实验工况下的最优排气过热度控制值43℃和最优吸气过热度控制值0℃。Enhanced vapor injection(EVI) method can effectively improve the heat capacity and high discharge temperature of air source heat pump in low ambient temperature. The control method of electronic expansion valve(EEV) in flash tank EVI heat pump air heater system is experimentally studied. The result shows the EEV before the flash tank can preferably use discharge superheat as its control target parameter, and the EEV after the flash tank can use suction superheat as its control target parameter. In addition, for the very experiment system and the very ambient temperature, the best discharge control value 43℃ and the best suction control value 0℃ is obtained by this experimental study.

关 键 词：空气源热泵 低温制热 中间补气 过热度 

分 类 号：TB657.2[一般工业技术—制冷工程]