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作 者:许超 张昌建[2] 罗景辉 刘小溪 张洁雄 XU Chao;ZHANG Chang-jian;LUO Jing-hui;LIU Xiao-xi;ZHANG Jie-xiong(China Coal Land Huasheng Hydrogeological Survey Co.,Ltd.,Handan 056000,China;Hebei University of Engineering,Handan 056000,China)
机构地区:[1]中煤地华盛水文地质勘察有限公司,河北邯郸056004 [2]河北工程大学,河北邯郸056000
出 处:《煤炭工程》2022年第12期152-156,共5页Coal Engineering
基 金:河北省重大科技成果转化项目(21284102Z)
摘 要:非常规水在结冰过程中释放的大量潜热,可以通过相变换热装置提取这部分热量作为热泵的低温热源,解决煤矿常规热源(矿井排水、排风;天然气、电能)短缺的问题。文章开展了面向煤矿供暖系统发展的套管相变凝固换热装置与低温热泵系统耦合的实验研究,研究结果表明:系统在凝固换热阶段COP最高为3.57,结冰厚度在10~30mm时,换热系数由520W/(m^(2)·K)降至285W/(m^(2)·K),COP由3.57降至3.29。该研究为提升非常规水资源化效益,构建矿井非常规水资源化高效利用模式提供了参考。The large amount of latent heat released by unconventional water in the process of icing can be extracted by the phase change heat exchange device as a low temperature heat source for heat pumps to solve the shortage of conventional heat sources(mine drainage and exhaust air;natural gas and electrical energy)in coal mines.An industrial experiment on the coupling of casing phase change condensing heat transfer device and low temperature heat pump system developed for coal mine heating system is carried out,and the research results show that the COP of the system is up to 3.57 in the condensing heat transfer stage,and the heat transfer coefficient decreases from 520 W/(m^(2)·K)to 285 W/(m^(2)·K)and the COP decreases from 3.57 to 3.29 when the thickness of icing is between 10 and 30 mm.This study provides references for improving the benefits and establishing an efficient utilization mode of unconventional water resources chemistry.
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