制冷技术
製冷技術
제랭기술
REFRIGERATION TECHNOLOGY
2014年
5期
31-33,53
,共4页
唐俊杰%王昕%张海南%马进%司春强%邵双全
唐俊傑%王昕%張海南%馬進%司春彊%邵雙全
당준걸%왕흔%장해남%마진%사춘강%소쌍전
氨系统%换热%循环倍率%霜层
氨繫統%換熱%循環倍率%霜層
안계통%환열%순배배솔%상층
Ammonia system%Heat transfer%Circulating ratio%Frost layer
为研究循环倍率对氨制冷系统换热性能的影响,基于管内强制对流换热经验公式建立模型。通过仿真计算分析了质量流速、循环倍率、霜层厚度等系统换热性能的影响。结果表明,相比霜层厚度增加,降低循环倍率对换热性能的影响较小,但对提高氨系统安全性有重要意义。
為研究循環倍率對氨製冷繫統換熱性能的影響,基于管內彊製對流換熱經驗公式建立模型。通過倣真計算分析瞭質量流速、循環倍率、霜層厚度等繫統換熱性能的影響。結果錶明,相比霜層厚度增加,降低循環倍率對換熱性能的影響較小,但對提高氨繫統安全性有重要意義。
위연구순배배솔대안제랭계통환열성능적영향,기우관내강제대류환열경험공식건립모형。통과방진계산분석료질량류속、순배배솔、상층후도등계통환열성능적영향。결과표명,상비상층후도증가,강저순배배솔대환열성능적영향교소,단대제고안계통안전성유중요의의。
In order to study the effect of circulating ratio on heat transfer performance in ammonia refrigeration system, the model was built based on the heat transfer experience formula of forced convection in tube. The influences of mass flow rate, circulating ratio and frost layer thickness on heat transfer were analyzed by numerical simulation. The results show that, reducing circulating ratio had little effect on the heat transfer performance comparing with the frost layer thickness, but it was important for ammonia system security.