Analytical solution and economic impact for improved p(t)-linear average method to estimate the ground thermal properties during in situ thermal response test. (17th February 2017)

• Record Type: Journal Article
• Authors: Zhang, Linfeng; Zhang, Quan; Huang, Gongsheng; Ma, Xiaowei
• Is Part Of: Science and technology for the built environment. Volume 23:Number 2(2017)
• Page Start: 324
• Page End: 333
• Publication Date: 2017-02-17
• Subjects: Heating -- Periodicals; Ventilation -- Periodicals; Air conditioning -- Periodicals; Refrigeration and refrigerating machinery -- Periodicals; Indoor air quality -- Periodicals; Indoor air quality; Air conditioning; Heating; Refrigeration and refrigerating machinery; Ventilation; Periodicals; 697
• DOI: 10.1080/23744731.2016.1229529
• Languages: English
• ISSNs: 2374-474X

Abstract

Abstract : One potential problem for designing a ground-coupled heat pump systems is the difficulty of identifying ground thermal properties due to complicated ground environment. A p ( t )-linear average method was proposed to improve the accuracy of the identification and was shown to be an effecitive method. However, the p -value in this method is only a fitted value. Thus, an improved p ( t )-linear average method is proposed in this study, in which the p -value is calculated using theoretical models inside the borehole. The relative errors for the borehole thermal resistance for the optimal improved p ( t )-linear average method is 1.90%.