环境参数对蒸发式冷却换热器性能影响的实验研究
发布时间：2019-02-16 14:35
【摘要】：本文利用由焓差室控制环境参数的水-水蒸发式冷却换热器实验台,研究喷淋密度、迎面风速和环境参数对其传热传质性能的影响。当改变喷淋密度和迎面风速时,测得最佳喷淋密度为0.031 4 kg/(m·s),最佳迎面风速为3.22 m/s;在最佳喷淋密度和最佳迎面风速的条件下,改变环境参数,测得湿球温度从22℃上升至28℃时,总传热系数降低约4.2%,传质系数降低约9.3%;相对湿度从85%降低至55%时,总传热系数上升约10%,传质系数上升约13.7%。
[Abstract]:In this paper, the influence of spray density, head-on wind speed and environmental parameters on the heat and mass transfer performance of water-water evaporative heat exchanger controlled by enthalpy difference chamber is studied. When the spray density and the face wind speed were changed, the optimum spray density was 0.031 kg/ (m s), and the best face velocity was 3.22 m / s; Under the condition of the best spray density and the best head-on wind speed, the total heat transfer coefficient and mass transfer coefficient are decreased about 4.2 and 9.3 respectively when the wet bulb temperature rises from 22 鈩，
本文编号：2424543
[Abstract]:In this paper, the influence of spray density, head-on wind speed and environmental parameters on the heat and mass transfer performance of water-water evaporative heat exchanger controlled by enthalpy difference chamber is studied. When the spray density and the face wind speed were changed, the optimum spray density was 0.031 kg/ (m s), and the best face velocity was 3.22 m / s; Under the condition of the best spray density and the best head-on wind speed, the total heat transfer coefficient and mass transfer coefficient are decreased about 4.2 and 9.3 respectively when the wet bulb temperature rises from 22 鈩，
本文编号：2424543
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