石墨烯板翅式全热换热器性能试验研究  

Experimental study on the performance of graphene plate-fin total heat exchanger

作　　者：陈剑波[1] 洪诗颖 韩昆宏 CHEN Jianbo;HONG Shiying;HAN Kunhong(University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学,上海200093

出　　处：《流体机械》2023年第7期1-8,共8页Fluid Machinery

基　　金：沪江基金资助项目(D14003)。

摘　　要：针对空调系统运行时存在新风能耗大的问题,对小型热回收新风机组用石墨烯板翅式全热换热器性能进行了试验研究。搭建了全热回收新风机组试验平台,以层高为2.0 mm的石墨烯芯体为试验研究主体,常规高效的瓦楞纸芯体和层高为3.0 mm的石墨烯芯体为试验对照组,进行了冬、夏季标准工况下不同迎面风速下热湿交换效率和阻力试验研究,并对石墨烯芯体进行了室外新风干球温度和相对湿度变化对热湿交换效率影响的试验研究。结果表明,石墨烯芯体单位风量和面积下全热换热量比瓦楞纸芯体高50%,并且瓦楞纸芯体的流道摩擦系数要比石墨烯芯体大21.5%;在环境温湿度提高时,夏季工况下,石墨烯芯体的温湿度效率分别提高了4.1%和6.7%,冬季工况下,湿度效率提高了8.9%。综上所述,相同的热回收新风机组尺寸和风量情况下,采用石墨烯芯体替代目前高效的瓦楞纸芯体,风机运行能耗更低,风量调节性能更好,有更为突出的热湿交换性能。In order to solve the problem of high fresh air energy consumption in air conditioning system,an experimental study on the performance of graphene plate-fin total heat exchanger for small heat recovery fresh air handling unit was carried out.The experimental platform of total heat recovery fresh air handling unit was set up with the graphene core with layer height of 2.0 mm as the experimental research object,and the conventional high-efficiency corrugated paper core and the graphene core with layer height of 3.0 mm were used as the experimental control group,an experimental study on heat and moisture exchange efficiency and resistance under different frontal wind speeds in winter and summer were carried out,and the effects of outdoor fresh air dry bulb temperature and relative humidity on heat and moisture exchange efficiency of graphene core were studied experimentally.The results show that under unit air volume and area,the total heat transfer of graphene core is 50%higher than that of corrugated paper core,and the flow channel friction coefficient of corrugated paper core is 21.5%higher than that of graphene core.When the ambient temperature and humidity increases,under summer operating conditions,the temperature and humidity efficiency of graphene core increases by 4.1%and 6.7%respectively,and the humidity efficiency increases by 8.9%under winter operating conditions.To sum up,under the same size and air volume of heat recovery fresh air handling unit,when the graphene core is used to replace the current efficient corrugated paper core,the fan has lower energy consumption,better air volume regulation performance and more outstanding heat and moisture exchange performance.

关 键 词：石墨烯芯体 板翅式换热器 全热回收 新风节能 传热传质性能 

分 类 号：TH137.8[机械工程—机械制造及自动化]