期刊
GEOTHERMICS
卷 40, 期 4, 页码 241-249出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.geothermics.2011.07.006
关键词
Geothermal; Ground-source heat pump; Ground loop heat exchanger; Finite line source; Inclined boreholes
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Fonds de Recherche sur la Nature et les Technologies (FQRNT) of Quebec
In the design of ground-source heat pump systems, the calculation of the total length a the bore field is very important because it is responsible for the major part of the initial cost. Some technologies, like direct expansion systems and pile systems, often use inclined boreholes. Most design methods do not consider this effect and may overestimate the total length needed for a typical application. This paper gives a method for the calculation of time response factors in a form called g-function for inclined boreholes. The analytical model can be used in a parameterized optimization algorithm to design an optimum bore field. The method is a generalization of a method previously proposed for vertical boreholes. Comparison of the new g-function with tabulated values found in the literature is given, and an application for a typical design is presented as an example. (C) 2011 Elsevier Ltd. A I rights reserved.
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