Finite cylinder-source model for energy pile heat exchangers: Effects of thermal storage and vertical temperature variations

Tatyana V. Bandos, Álvaro Campos-Celador, Luis M. López-González and José M. Sala-Lizarraga

Energy, 2014, vol. 78, issue C, 639-648

Abstract: A mean integral solution to the FCS (finite cylindrical source) model for ground heat exchangers that takes into account the heat capacity inside the borehole or foundation and allows estimation of temperature field for an arbitrary borehole configuration is presented as a single integral. Approximate expressions for the average temperature over a wide range of time values are derived analytically in the vicinity of both sides of the finite cylindrical surface of heat source. Exact and approximate results for the mean temperature are compared to those calculated at the mid-depth from the exact solution of the same FCS model.

Keywords: Ground heat exchangers; Energy piles; Borehole heat exchangers; Ground coupled heat pumps (search for similar items in EconPapers)
Date: 2014
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Citations: View citations in EconPapers (13)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:78:y:2014:i:c:p:639-648

DOI: 10.1016/j.energy.2014.10.053

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