摘要
研究了替代工质Ｒ１３４ａ在沸腾温度为３０４．８Ｋ时，在光滑管管束和机械加工表面多孔管管束外的池沸腾换热性能，并探讨了其换热机理。研究结果表明，Ｒ１３４ａ在光滑管管束外的池沸腾存在明显的管束效应，而在机械加工表面多孔管管束外沸腾无管束效应出现，在相同热流密度下管束的各排管的沸腾传热系数均低于其单管值。
An experimental investigation of the pool boiling of R134a outside horizontal plain and E tube bundle has been conducted at 304.8K. The experimental results of the pool boiling of R134a outside a plain tube bundle show that a definite bundle effect exists. But for E tube bundle there exists no tube bundle effect. The boiling heat transfer coefficient of the tube in bundle is basically lower than that of a single tube.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
1998年第3期226-230,共5页
Journal of Chemical Engineering of Chinese Universities
基金
广东省自然科学基金
关键词
池沸腾
传热
管束效应
替代工质
制冷剂
R134A
Pool boiling, Heat transfer coefficient, Tube bundle effect, CFCs alternative, Refrigerant
