Study on operation management of borehole heat exchangers for a large-scale hybrid ground source heat pump system in China

Luo J, Zhao H, Jia J, Wei X, Rohn J, Blum P (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Energy Elsevier

Publisher: Elsevier Ltd

Book Volume: 123

Pages Range: 340-352

DOI: 10.1016/j.energy.2017.01.136

Abstract

For large-scale Ground Source Heat Pump (GSHP) systems, the numerous Borehole Heat Exchangers (BHEs) are generally managed in units. The simultaneous operation of BHEs consume huge amount of energy by operating water-circulating-pumps. However, such an operation condition may waste energy when no peak thermal load is needed. Hence, operation management should be optimized according to timely energy demand to ensure efficient performance with minimum maintenance. In this paper, three operation conditions for a cooling load dominated GSHP system in China are studied. First, specific ground conditions of the BHE field are investigated. The GSHP system operation under intermittent heating and cooling conditions is simulated by Thermal Performance Test (TPT). In order to examine performance of the BHEs and ground temperature migration, a numerical heat transport model is developed. Modeling results indicate similar thermal performance of BHEs and ground temperature disturbance among the three operation alternatives over a 25-year period. Finally, economic performance and operating savings are analyzed. The optimized operation condition in which the operating numbers of BHEs was designed with monthly energy demand of the building could save around 25,000 CNY (∼3000 EUR) annually. © 2017 Elsevier Ltd

Authors with CRIS profile

Jin Luo Professur für Angewandte Geologie und Modellierung von Umweltsystemen Joachim Rohn Professur für Angewandte Geologie und Modellierung von Umweltsystemen

Involved external institutions

China Three Gorges Corporation CN China (CN) China University of Geosciences / 中国地质大学 CN China (CN) Karlsruhe Institute of Technology (KIT) DE Germany (DE)

How to cite

APA:

Luo, J., Zhao, H., Jia, J., Wei, X., Rohn, J., & Blum, P. (2017). Study on operation management of borehole heat exchangers for a large-scale hybrid ground source heat pump system in China. Energy, 123, 340-352. https://doi.org/10.1016/j.energy.2017.01.136

MLA:

Luo, Jin, et al. "Study on operation management of borehole heat exchangers for a large-scale hybrid ground source heat pump system in China." Energy 123 (2017): 340-352.

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