用于高密度显热机房排热的分离式热管换热器性能优化分析  

Performance optimization of separate type heat pipe heat exchanger in plant room with high density of sensible heat load

作　　者：李震[1] 田浩[1] 张海强[1] 刘晓华[1] 江亿[1] 钱晓栋[1] 

机构地区：[1]清华大学

出　　处：《暖通空调》2011年第3期38-43,共6页Heating Ventilating & Air Conditioning

基　　金：国家自然科学基金资助项目(编号:50906042)

摘　　要：分析了应用于信息机房空调系统的热管换热器的流程。热管换热器的总驱动温差为室内外温差,单级热管换热器内部制冷剂的恒温特性导致室内换热器和室外换热器两侧热容不匹配、等效热阻较大,可通过增加热管级数来降低换热器的热容不匹配程度,从而降低等效热阻,提高换热效率。Analyses the flow path of heat pipe heat exchanger applied to the air conditioning system in plant rooms.The temperature difference of indoor air and outdoor air is the total driving temperature difference.The constant temperature characteristic of refrigerant in heat pipe results in the unmatched problem of thermal capacity in indoor and outdoor heat exchanger,which increases the equivalent thermal resistance of heat pipe.Enhancing the stages of heat pipe can reduce the unmatched problem to some degree and reduce the equivalent thermal resistance,and improve heat transfer efficiency.

关 键 词：热管 (火积)耗散 温差 热力学优化 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程]