U型管地热换热器中介质轴向温度的数学模型

A fluid temperature model for vertical U-tube geothermal heat exchangers

基于能量平衡原理 ,经过分析与推导 ,得出了流体在U型埋管换热器流动过程中无量纲温度沿无量纲深度变化的关系式。根据埋管换热器的入口温度 ,能更为精确地求出流体的出口温度 ,为进一步分析影响地热换热器性能的因素提供了条件。

In terms of the theory of energy equilibrium,the fluid temperature distribution along the depth of a borehole in vertical U tube geothermal heat exchangers has been obtained.Based on this soultion,the outlet fluid temperature can be worked out with higher precision at any given inlet fluid temperature,and further analysis on performance of U tube geothermal heat exchangers can be made.