中温闭式热泵干燥消防水带系统的(火用)分析  

EXERGYANALYSIS OF MEDIUM TEMPERATURE CLOSED-LOOP HEAT PUMP SYSTEM DRYING FIRE HOSE

作　　者：李永振 刘龙 于昊 刘翠浴 胡张鹏 马鹏真 Li Yongzhen;Liu Long;Yu Hao;Liu Cuiyu;Hu Zhangpeng;Ma Pengzhen(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266000,China;Qingdao Guoxin Construction Investment Co.,Ltd.,Qingdao 266000,China)

机构地区：[1]青岛理工大学环境与市政工程学院,青岛266000 [2]青岛国信建设投资有限公司,青岛266000

出　　处：《太阳能学报》2023年第8期189-194,共6页Acta Energiae Solaris Sinica

基　　金：山东省高等学校科技计划项目——潮汐引发渗流作用下浅滩热泵水平埋管换热机理研究(J18KA189)。

摘　　要：通过(火用)分析的方法分析以R134a为制冷剂的中温闭式热泵干燥消防水带系统的性能,对比研究不同干燥温度下系统COP、单位能耗除湿量、(火用)损失以及(火用)效率的变化情况,确定系统最佳干燥工况。结果表明:随着干燥温度的提高,干燥时间逐渐变短,系统COP逐渐降低,总(火用)损失降低,(火用)效率随之增加。在干燥温度为65℃时系统总耗电量达到最小值,为3.01 kWh。此时单位能耗除湿量(SMER)达到最大,为0.537 kg/kWh。系统(火用)效率在干燥温度为60℃时达到最大,为44.2%,比干燥温度为40℃的最低(火用)效率提高87.3%。Exergy analysis was conducted to analyze the performance of the medium temperature closed-loop heat pump drying system for the fire hose with R134a as refrigerant.Through experiments,the changes of COP,specific moisture extraction rate,exergy loss and exergy efficiency of the system at different air supply temperatures were studied to determine the optimal drying conditions of the system.The results show that as the drying temperature increases,the drying time gradually become shorter,the system coefficient of performance gradually decreases,and the overall exergy loss gradually decreases,and exergy efficiency increases.When the drying temperature is 65℃,the total power consumption of the system reaches the minimum value of 3.01 kWh.At this point,the specific moisture extraction rate(SMER)reaches the maximum value,which is 0.537 kg/kWh.Overall exergic efficiency reaches the maximum of 44.2%at 60℃,87.3%higher than the lowest exergic efficiency at 40℃.

关 键 词：热泵干燥 (火用)分析 (火用)效率 单位能耗除湿量 

分 类 号：TK173[动力工程及工程热物理—热能工程]