摘要
Abstract
Based on the cylindrical source theory, the heat transfer model was established and he numerical solution of the vertical U-tube exchangers was calculated,the results show that, in summer, in a given inlet water temperature and flow, continuous operation of 48h, the outlet water temperature of U-tube exchangers, the wall temperature and the heat exchanger per meter is found to be stabilized. Compared the date with the heat response experiment, the relative error is 3% , verified the accuracy of the model. Give a ground heat exchanger design of one place, analysis of the U-tube heat transfer performance under different load characteristics, the simulation results show the highest inlet water temperature in the whole summer operation is less than the design value 37℃ ,meet the operation requirements and the design is reasonable, provide a reference for the practical application.关键词
地埋管换热器/圆柱源/模拟/换热性能/进出口水温Key words
ground heat exchanger/cylindrical heat source theory/numerical simulation/heat transfer performance/import and export water temperature分类
化学化工
