Design and application of a new type local refrigeration equipment for deep mine
With the increasing mining depth of coal mines,the underground thermal pollution of deep mines has become a major factor restricting coal mining.Local cooling,as a supplement to centralized cooling,can effectively eliminate the thermal pollution.In view of the underground thermal pollution in the high-temperature excavation face of a coal mine,we analyzed the design scheme and practical application effect of the project composed of closed-type exhaust air cooling tower,multi-stage serial direct expansion combined cabinet,explosion-proof semi-hermetic screw compressor with large pressure ratio and so on.The results show that the closed-type exhaust air cooling tower scheme can improve the comprehensive energy efficiency level of the mine,the new type mine local cooling system can be applied to the working conditions of high-pressure ratio mines,and the operating condensation temperature can reach up to 80℃,and the direct expansion combined cabinet adopts multi-stage serial direct expansion combined cabinet to achieve a temperature drop of 10℃and a relative humidity drop of 30%.
underground thermal pollution in deep minelocal coolingexhaust air coolingcooling and dehumidification
NETL
NSTL
万方数据
