太阳能空气能热泵中电子膨胀阀受太阳辐射影响下的运行特性分析  

Analysis on Operation Characteristics of Electronic Expansion Valve of Solar Integrated Air Source Heat Pump Under Influence of Solar Radiation

作　　者：王永帅 田琦 徐振 李兆函 WANG Yongshuai;TIAN Qi;XU Zhen;LI Zhaohan(Department of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学土木工程学院,太原030024

出　　处：《华侨大学学报（自然科学版）》2022年第1期74-80,共7页Journal of Huaqiao University(Natural Science)

基　　金：“十二五”国家科技支撑计划项目(2012BAJ04B02);科技部国际合作项目(2013DFA61580)。

摘　　要：为了解决太阳能空气能热泵(SIASHP)系统中电子膨胀阀(EEV)的开度受太阳辐射影响,导致热泵系统无法稳定、高效运行的问题,运用实验和TRNSYS软件模拟的方法,对SIASHP系统中EEV受太阳辐射影响下的运行特性进行研究.结果表明:SIASHP机组性能与EEV的开度不成正相关,存在某个峰值;相较于常规机组,SIASHP机组的EEV阈值更大,根据此特性,当EEV在较大的开度区间内调节时,SIASHP机组仍可保持正常运行;为保证SIASHP机组的安全稳定运行,自控装置应综合过热度和太阳辐射强度对电子膨胀阀进行调节.In order to solve the problem that the opening of electronic expansion valve(EEV)in the solar integrated air source heat pump(SIASHP)system is affected by solar radiation,which leads to the unstable and inefficient operation of the heat pump system,the operation characteristics of the EEV under the influence of solar radiation in SIASHP system are studied by methods of experiment and TRNSYS software simulation.The results show that there is no positive correlation between the performance of the SIASHP unit and the opening of the EEV,and there is a peak value;the EEV threshold of the SIASHP unit is higher than the threshold of the conventional unit,according to this characteristic,when the EEV is adjusted in a large opening range,the SIASHP unit can still maintain normal operation,and in order to ensure the safe and stable operation of the SIASHP unit,the automatic control device should integrate superheat and solar radiation intensity to adjust the electronic expansion valve.

关 键 词：太阳能空气能热泵 电子膨胀阀 太阳辐射 运行特性 TRNSYS模拟 

分 类 号：TK513.5[动力工程及工程热物理—热能工程]