Dynamic thermal modelling of horizontal ground-source heat pumps

被引：31

作者：

Gan, Guohui ^{[1
]}

机构：

[1] Univ Nottingham, Dept Architecture & Built Environm, Univ Pk, Nottingham NG7 2RD, England

来源：

INTERNATIONAL JOURNAL OF LOW-CARBON TECHNOLOGIES | 2013年 / 8卷 / 02期

基金：

英国自然环境研究理事会;

关键词：

heat exchanger; ground-source heat pump; soil freezing; thermal conductivity; intermittent operation;

D O I：

10.1093/ijlct/ctt012

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A computer program has been developed for numerical simulation of the dynamic thermal performance of horizontally coupled heat exchangers for ground-source heat pumps, taking account of dynamic variations of climatic, load and soil conditions. The program was used to investigate the effects of operating and start times, installation depth and soil freezing on the heat exchanger performance. It is shown that the rate of heat extraction decreases with increasing operating time. Operating a heat pump with an earlier start date in autumn would give rise to a higher amount of cumulative heat extraction. Also, a heat exchanger installed at a shallower depth can provide a larger heat extraction rate at the early stage of heating operation. In addition, soil freezing enhances heat extraction.

引用

页码：95 / 105

页数：11

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