THE HEAT AND MASS TRANSFER CHARACTERISTICS IN A VERTICAL-TUBE EVAPORATIVE CONDENSER
Evaporative cooling is used to reduce temperature in different fluids in industrial and air conditioning processes. The processes of coolers involve two phase flow between air and water, the heat-mass transfer and its coupled process. In this study, the heat and mass transfer characteristics in a verticaltube evaporative condenser have been investigated. A steady-state, one-dimensional model of cooler performance was formulated and validated by experimental measurement taken in this exchanger. The heat resistance at the air-water interface predominates over all other heat resistance and the heat and mass transfer coefficients occur at the airwater interface. With the enhancing experiment of the spring inserts, the heat and mass transfer coefficients might be increased 5％ to 17％. The findings may provide more information to the design of vertical-tube evaporative condensers.
Evaporative condenser Vertical tube Heat -mass transfer Heat resistance Spring insert.
Zhijiang Wu Dongsheng Zhu Aiming Tu Xiang Jiang
Institute of Chemical and Energy Engineering, Educational Ministrys Key Lab of Enhanced Heat Transfer and Energy Conservation, South China Univ.of Tech, Guangzhou 510640)
国际会议
北京
英文
2007-09-07（万方平台首次上网日期，不代表论文的发表时间）