摘要
利用风洞试验装置试验研究变间距对称圆孔翅片管式换热器在结霜工况下的制冷性能。研究结果证明:在迎面平均风速为1.87~4.30m/s时,在同等试验条件下,变问距对称圆孔翅片管式制冷换热器的制冷量在低风速下比非变间距圆孔翅片管式制冷换热器换热量提高7.6%,当量表面传热系数提高18.26%,阻力减小48.85%,节省21.43%的翅片金属材料。
In order to investigate the refrigeration performance of finned-tube heat exchanger with changing fin spacing and symmetrical holes under frosting conditions, a wind-tunnel experiment on the energy conservation performance was carried out. The experimental results show that in the range of head-on-average velocity from 1.87-4.30 m/s, comparing the finned-tube refrigeration heat exchanger with no-changing fin spacing and holes, in the same experimental condition and geometric size, the cooling capacity of the former exchanger increases by 7.6%; the surface of the fm heat transfer coefficient raises by 18.26%; and the resistance decreases by 48.85% with saving 21.43% metal material of fin in lower velocity.
出处
《中南大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2012年第10期4081-4086,共6页
Journal of Central South University:Science and Technology
基金
国家自然科学基金重点资助项目(50838009)
中美清洁能源联合研究中心建筑节能合作项目(2010DFA72740-03)
关键词
制冷换热器
翅片
变间距
节能
refrigeration heat exchanger
fin
changing fin spacing
energy conservation