摘要
平行流冷凝器是一种新型高效紧凑式换热器,其在家用空调器中的应用还存在一些问题,如压降太大等,本文使用Yang和Webb推荐的扁管侧经验传热系数及摩擦阻力关联式,采用数值模拟的方法,研究了家用空调器中平行流冷凝器多孔扁管结构对其传热及压降性能的影响。结果表明:适当减小平行流冷凝器的扁管内孔高度、宽度、宽高比及扁管孔数,可提高其传热系数、增加压降。研究结果为家用空调器中平行流冷凝器多孔扁管参数的选取提供了理论依据。
Parallel flow condenser is a new type of higher and compact heat exchanger,its application in domestic air conditioner still has some problems to be unsolved.Yang & Webb's recommended correlations of heat transfer and friction coefficients were employed in this paper to simulate and study the influence of flat tube structure on heat transfer and pressure drop performance.The result shows that reducing the number of flat tube inner hole,inner hole width,inner hole height,or the aspect ratio will raise the refrigerant-side heat transfer coefficient and pressure drop.The result provides a theoretical basis for selection of flow parallel flat tube parameters for the domestic air conditioner condenser.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2008年第S2期129-133,共5页
CIESC Journal
基金
广东省教育部产学研结合项目(2007A090302115)
粤港关键领域重点突破项目(佛山专项)(2007Z41)
华中科技大学能源与动力工程学院科学研究基金项目(NK200706)~~
关键词
家用空调器
扁管
传热系数
压降
domestic air conditioner
flat tube
heat transfer coefficient
pressure drop
