Heat and mass transfer processes between a water spray and ambient air – I. Experimental data
Heat and mass transfer processes between a water spray and ambient air – I. Experimental data
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DOI：
10.1016/j.applthermaleng.2007.09.010
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发表时间：
2008-04
影响因子：
6.4
通讯作者：
R. Sureshkumar;S. R. Kale;P. Dhar
中科院分区：
文献类型：
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作者：
R. Sureshkumar;S. R. Kale;P. Dhar
通过喷水对空气进行蒸发冷却是一种节能且环境友好的技术，其可用于在干旱气候中产生合理舒适的条件。关于这个过程的实验数据是有限的，并且通常具有很大的不确定性。本文介绍了两种环境条件下获得的实验数据，即，干热和湿热，干球温度（DBT）为35 - 47°C，R.H. 10- 60%这些研究是针对平行流和逆流配置进行的，每种配置都有四种喷嘴尺寸;水压为1、2和3bar（g），空气速度为1、2和3 ms −1。对空气和水条件的控制以及测量的准确性得到了改进，因此不确定性大大低于早期研究。数据显示出明显的趋势。对于特定的水流量，较小的喷嘴在较高的压力比较大的喷嘴在较低的压力产生更多的冷却。
Evaporative cooling of air by water sprays is an energy efficient and environmentally benign technology that can be employed for producing a reasonably comfortable condition in arid climates. Experimental data on this process are limited and often have large uncertainties. This paper presents experimental data obtained for two ambient conditions, viz., hot-dry and hot-humid, covering dry bulb temperature (DBT) from 35 to 47°C, and R.H. 10–60%. The studies were conducted for parallel and counter flow configurations, each with four nozzle sizes; water pressures were 1, 2 and 3bar(g) and air velocities 1, 2 and 3ms−1. The controls on air and water conditions, and the accuracy of measurement were improved so that the uncertainties are considerably lower than in earlier studies. The data showed clear trends. For a specific water flow rate, a smaller nozzle at higher pressure produced more cooling than a larger nozzle at lower pressure.