标题:Influence Investigation of Thermal Load Imbalance on Geothermal Heat Exchanger
作者:Wang, Enqi; Zhang, Fangfang; Zhang, Yuanyuan; Zhao, Qiang
通讯作者:Zhang, FF;Zhang, FF;Zhang, Fangfang
作者机构:[Wang, Enqi; Zhang, Fangfang] Shandong Fangya GSHP Technol Co Ltd, Jinan 250101, Shandong, Peoples R China.; [Wang, Enqi; Zhang, Fangfang] Shandong 更多
会议名称:10th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC)
会议日期:OCT 19-22, 2017
来源:10TH INTERNATIONAL SYMPOSIUM ON HEATING, VENTILATION AND AIR CONDITIONING, ISHVAC2017
出版年:2017
卷:205
页码:3846-3851
DOI:10.1016/j.proeng.2017.10.072
关键词:Geothermal heat exchanger; Hourly dynamic load; Infinite line -source; model; Thermal balance; Optimal design
摘要:A simplified method for calculating the dynamic soil temperature for geothermal heat exchanger is proposed based on the infinite line-source model, and is used to analyze the characteristics of the temperature variation in borehole wall. The comparison with the infinite line-source model shows that the simplified model is feasible and convenient. The corresponding moment of the peak value of borehole wall temperature is coincide in terms of the thermal load for single geothermal heat exchanger. The influence of the imbalance of cooling and heating load is investigated by using the simplified model based on the imbalanced load of a commercial building for 50 years. The results indicate that the load imbalance has little influence on the heat transfer performance of a single geothermal heat exchanger. However, the soil affected by the heat transfer of geothermal heat exchanger becomes larger with the increase of geothermal heat exchangers, which usually only work effectively for several years. The increase of the distance and quantity of geothermal heat exchanger is uneconomic, although it can reduce the influence of load imbalance. In short, reducing the load imbalance rate is the most direct and effective method for improving the thermal performance of geothermal heat exchanger. (C) 2017 The Authors. Published by Elsevier Ltd.
收录类别:CPCI-S;EI;SCOPUS
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85033383224&doi=10.1016%2fj.proeng.2017.10.072&partnerID=40&md5=b2afb96b76ab2cd0845233a11ed60cfd
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