闪发器型准二级压缩空气源热泵加速除霜实验  

Experiment on accelerated defrosting of quasi-two-stage compressed air-source heat pump with flash tank

作　　者：徐林彤 林木森[1,2] 倪龙 宋一平[3] 吴林涛 Xu Lintong;Lin Musen;Ni Long;Song Yiping;Wu Lintao(Harbin Institute of Technology,Harbin;Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology,Ministry of Industry and Information Technology,Harbin;Hisense Air Conditioner Co.,Ltd.,Qingdao)

机构地区：[1]哈尔滨工业大学,哈尔滨 [2]寒地城乡人居环境科学与技术工业和信息化部重点实验室,哈尔滨 [3]海信空调有限公司,青岛

出　　处：《暖通空调》2023年第11期43-48,共6页Heating Ventilating & Air Conditioning

基　　金：国家自然科学基金项目(编号:52278100)。

摘　　要：为提升闪发器型准二级压缩空气源热泵逆循环除霜性能,本文利用机组既有循环结构,在除霜期间通过打开电磁阀实现补气,加大制冷剂质量流量。实验结果表明,补气可缩短融霜时间,从而有效缩短除霜时间和降低除霜能耗,而且室外温度越低,效果越显著。在-10~2℃的实验环境中,使用补气除霜后,除霜时间缩短了23.73%~40.48%,除霜耗功量减少了17.75%~45.90%。In order to improve the performance of reverse cycle defrosting of a quasi-two-stage compressed air-source heat pump with the flash tank,this paper uses the existing cycle structure of the unit to realize vapor injection by opening the solenoid valve during defrosting and increase the refrigerant mass flow.The experimental results show that vapor injection can reduce frost melting time,thus effectively reduce defrosting time and defrosting energy consumption,and the lower the outdoor temperature is,the more significant the effect is.In the experimental environment of-10℃to 2℃,the defrosting time is shortened by 23.73%to 40.48%,and the defrosting power consumption is reduced by 17.75%to 45.90%after using vapor injection defrosting.

关 键 词：空气源热泵 补气除霜 常规除霜 除霜时间 除霜耗功量 闪发器 逆循环除霜 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]