Computational methods for ground thermal response of multiple borehole heat exchangers: A review. (November 2018)

• Record Type: Journal Article
• Authors: Zhang, Changxing; Wang, Yusheng; Liu, Yufeng; Kong, Xiangqiang; Wang, Qing
• Is Part Of: Renewable energy. Volume 127(2018)
• Page Start: 461
• Page End: 473
• Publication Date: 2018-11
• Subjects: Borehole heat exchanger -- Computational methods -- Ground thermal response -- Thermal interaction; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2018.04.083
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: Since ground-coupled heat pump system (GCHPs) has been more and more widely applied, it is vital to build an accurate method for sizing borehole heat exchangers (BHEs), and the methods for determining the heat transfer between the boreholes and surrounding ground under time-varying loads in different time scales are the kernel of optimizing design of BHEs, which is helpful to obtain accurate results and significantly decrease computation time consuming. This paper summarizes computational methods for the ground thermal response of BHE under time-varying loads and thermal interaction of multiple BHEs, compares the representative design tools in terms of their performance characteristics, and analyzes the direct applications of computational methods in thermal response test (TRT) and operating performance simulation of GCHPs. Finally, some recommendations for future development of computational methods are proposed. Highlights: The computational methods for ground dynamic thermal responses are reviewed. The computational methods for thermal interactions of multiple BHEs are summarized. The representative design tools based on computational methods are compared. The direct applications of computational methods are analyzed.