新型复合热回收直流式空调机组的设计及能耗分析  

Design and energy consumption of new direct flow air conditioning unit based on composite heat recovery

作　　者：姜坪[1] 魏晓雯 穆宜轩 JIANG Ping;WEI Xiaowen;MU Yixuan(School of Civil Engineering and Architecture,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学建筑工程学院,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2021年第4期559-564,共6页Journal of Zhejiang Sci-Tech University(Natural Sciences)

摘　　要：针对直流式空调机组排风热回收的需求,设计了一种将热管式和热泵式热回收装置相结合的复合热回收直流式空调机组。新风与排风通过热管式热回收器进行热交换,经过热交换后的新风温度降低,排风温度升高,然后再将新风引入热泵式热回收装置的蒸发器,使其所承担的新风负荷减小,将排风引入热泵式热回收装置的冷凝器,夏季可有效降低热泵循环的冷凝温度,冬季可提高其蒸发温度。结果表明:在杭州地区的气象条件下,与传统的直流式新风机组相比,复合热回收直流式空调机组夏季节能36.6%,冬季节能78.6%,静态投资回收期1.67 a,动态投资回收期1.87 a。该机组有效回收了排风中的低品位能量,提高了机组的运行效率。To meet the demand of exhaust heat recovery by direct flow air conditioning unit,a type of direct flow air conditioning unit based on composite heat recovery that combines pipe-type and pump-type heat recovery device is proposed.The fresh air and exhaust air exchange heat through the pipe-type heat recovery device.After heat exchange,the temperature of fresh air decreases,while the temperature of exhaust air increases.After that,the fresh air is introduced into the evaporator of the pump-type heat recovery device to lower the fresh air burthen it bears.The exhaust air is introduced into the condenser of the pump-type heat recovery device.In summer,the condensation temperature of the heat pump cycle can be effectively reduced,while in winter,the evaporation temperature can be increased.The results indicate that under the meteorological conditions in Hangzhou,compared with the traditional direct flow fresh air unit,the direct flow air conditioning unit based on composite heat recovery can save 36.6%energy in summer and 78.6%energy in winter,and the static payback time is 1.67 years and the dynamic payback time is 1.87 years.The proposed unit effectively can recover the low-grade energy in the exhaust air and improve the operation efficiency of the unit.

关 键 词：热管式热回收 热泵式热回收 直流式空调机组 能耗分析 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程]