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制冷法用于矿井降温已有50~60年历史。实践证明,高温矿井采用制冷法降温,技术上是有效的,经济上是合理的。目前,国外在金、铜、煤、钾盐和高硫矿中均有应用,我国也开展了一些试验研究,取得了一定的成果。这里就高温矿井降温的制冷方法、制冷设备、制冷剂与冷媒及制冷降温系统等问题作一简要介绍。一、制冷方法制冷方法很多,按制冷原理可分三类:利用物质在物态变化时吸热制冷、利用气体
Refrigeration method for mine cooling has been 50 to 60 years of history. Practice has proved that the use of cooling high temperature mine cooling, technically effective, economically reasonable. At present, foreign countries have applications in gold, copper, coal, potash and high-sulfur mines. Some pilot studies have been carried out in our country and some achievements have been made. Here to cool the high temperature cooling method, refrigeration equipment, refrigerants and refrigerant cooling system and other issues for a brief introduction. First, the cooling method A lot of cooling methods, according to the cooling principle can be divided into three categories: the use of substances in the change of state endothermic refrigeration, the use of gas