摘要
蒸发冷却被应用于工业过程和空调系统中以降低不同流体的温度,其工作过程涉及空气和水的两相流、两相流的传热传质及传热和传质间的耦合.作者主要研究了立管式蒸发式冷凝器的传热特性,建立了一个一维、稳态的性能计算模型.实验结果表明,气-液界面的热阻是立管式蒸发式冷凝器热传递过程中的主要热阻,弹簧插入物有助于提高其传热性能.所得的结论为该种设备的设计提供了更多的参考信息.
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 transfer characteristics in a vertical tube evaporative condenser have been investigated. A steadystate, one-dimensional model of cooler performance is formulated. The heat resistance at the air-water interface predominates over all other heat resistance. With the enhanced experiment of the spring inserts, the heat transfer characteristics might be increased greatly. These findings may provide more information to the design of vertical-tube evaporative condensers.
出处
《陕西科技大学学报（自然科学版）》
2007年第5期10-15,共6页
Journal of Shaanxi University of Science & Technology
基金
教育部博士点基金资助计划(200556116)
关键词
蒸发式冷凝器
竖管
传热特性
弹簧插入物
evaporative condenser
vertical tube
heat transfer characteristics
spring insert
