可再生能源2016，Vol.34Issue(6)：894-899,6.
垂直单U地埋管换热器进出口水温耦合特性分析
Analysis on the coupling characteristics between inlet and outlet water temperature of vertical single-U ground-tube heat exchanger
摘要
Abstract
The inlet and outlet water temperature of the vertical single-U ground-tube heat exchanger in a soil source heat pump (SSHP) system,which were obtained by test during the heating period,were analyzed.Then,the variation of the vertical pipe's inlet and outlet temperature were summarized.By using MATLAB,we analyze and fit the coupling characteristics between inlet and outlet water temperature of vertical single-U ground-tube heat exchanger,and establish the functional relation of the outlet water temperature changing with the inlet water temperature,the correlation coefficient is 0.975.Apply this formula in combination with the measured inlet water temperature to forecast the outlet water temperature in the heating period of next year.Comparing the predicted and measured values,the relative error is in ±8.1％,which shows that the coupling relation can be used to predict the heat transfer characteristics of ground heat exchanger for future every year at the same heating period,and provide reliable reference for the design and operation of prediction for the SSHP system of the similar geological and climatic conditions.关键词
垂直单U地埋管/换热器/土壤源热泵/耦合特性Key words
vertical single-U ground-tube/heat exchanger/soil source heat pump/coupling characteristics分类
能源科技引用本文复制引用
余敏,杜震宇,范毅,秦旖..垂直单U地埋管换热器进出口水温耦合特性分析[J].可再生能源,2016,34(6):894-899,6.基金项目
山西省科技厅攻关项目(20130313004-1) （20130313004-1）
山西省科技重大专项(20131101016). （20131101016）
