矿井回风喷淋换热器节水及换热效率影响因素研究

Influence Factor Research on Water Saving and Heat Exchange Efficiency of Spraying Heat Exchanger in Mine air Return Roadway

针对矿井回风喷淋换热器运行过程中液滴大小对节水及换热效率等因素的影响,采用Flu-ent软件,研究了液滴直径与液滴逃逸率、液滴捕捉率、落入换热器底部液滴的平均温度、回风/液滴之间的总传热量、换热器出口回风温度之间的关系。结果表明:液滴直径选择在0.10～0.15 cm时,换热器的换热效率最高,此时液滴逃逸率也比较低,即节水效率较高。

According to the drop size affected to the water saving and heat exchanging efficiency during the operation process of the spraying heat exchanger in the mine air retuning roadway, the Fluent software was applied to study the relationship between the drop size and drop escape rate, drop collection rate, average temperature of drops under the heat exchanger, total heat transfer value between the air re- tuning and drop, and air retuning temperature at the outlet of the heat exchanger. The results showed that when the drop diameter was selected ranging from 0. 10 - 0. 15 cm, the heat exchanging efficiency of the heat exchanger would be bester and the drop escape rate would be lower, water saving efficiency would be higer.