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首页> 外文期刊>Tunnelling and underground space technology >Computational evaluation of cooling system under deep hot and humid coal mine in China: A thermal comfort study
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Computational evaluation of cooling system under deep hot and humid coal mine in China: A thermal comfort study

机译：我国深层潮湿煤矿冷却系统的计算评价：热舒适性研究

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摘要

Cooling system is widely used in deep coal mines of China for the increasing heat hazard. Although the greatly controlled air temperature and relative humidity ensured a certain degree of production safety by utilizing of cooling systems, especially by High temperature Exchange Machinery System (HEMS) system, the working conditions are still complained by the workers. An evaluation of the cooling system basing on the thermal comfort was necessary. In this article, onsite experiment and numerical simulation were taken and the cooling effect of HEMS system was evaluated by the index of WBGT. The results indicated that the current outlet parameters (outlet air temperature, RH and velocity respectively are 18 degrees C, 80% and 1.5 m/s) of the air cooler would not make the workers in all of the tunnels feel comfortable; the RH in the inlet tunnel that reduced to 75% and in the mining tunnel reduced to 60% would satisfy all of the workers in the whole tunnel. The results would be beneficial to the optimizing of cooling under deep coal mine.
机译：冷却系统广泛应用于中国深煤矿，以增加热危害。虽然通过利用冷却系统，但特别是通过高温交换机械系统（HEMS）系统，工作条件仍然是由工人抱怨的较大控制的空气温度和相对湿度确保了一定程度的生产安全性。对热舒适性的冷却系统的评估是必要的。在本文中，采取了现场实验和数值模拟，通过WBGT指数评估了下摆系统的冷却效果。结果表明，当前出口参数（出口空气温度，Rh和速度分别为18℃，80％和1.5米/秒）的空气冷却器不会使工人在所有隧道中感到舒适;入口隧道中的RH减少到75％，挖掘隧道减少到60％，这将满足整个隧道中的所有工人。结果将有利于深煤矿下的冷却优化。

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