喷淋初角对立式喷淋室内传热传质效果的影响  

Influence of initial spray angle on heat and mass transfer in vertical spray chambers

作　　者：鲍玲玲[1] 赵旭[1] 王景刚[1] 

机构地区：[1]河北工程大学

出　　处：《暖通空调》2017年第12期102-107,共6页Heating Ventilating & Air Conditioning

基　　金：国家自然科学基金资助项目(编号:51408182);河北省自然科学基金资助项目(编号:E2015402139);河北省教育厅科学技术处资助项目(编号:QN2014064)

摘　　要：建立了二维水滴运动、传热传质及的数学模型。利用四阶龙格-库塔方法,进行了传热传质及的数值计算,分析了不同喷淋初角下水滴在喷淋室内的运行时间、运行距离和气-水热质交换参数的变化情况。结果表明,在初始速度一定的情况下,随着喷淋初角的减小,水滴在喷淋室内的运行时间延长,运动路程变长,换热量增大,损增大,但均变化很小。Establishes the two-dimensional mathematical models of water droplet movement, heat and mass transfer and entransy. Makes the numerical calculation of heat and mass transfer and entransy by the fourth-order Runge-Kutta method, and analyses the water droplet movement time, running distance and heat and mass transfer parameters of air and water in the spray chamber at different initial spray angles. The results show that at a constant initial velocity, the duration time and movement distance of water droplets would be longer in the spray chamber, the heat transfer rate and the entransy loss would increase along with the initial angle decreases, but all the changes are very small.

关 键 词：喷淋初角 立式喷淋室 传热传质 换热量 损 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]