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Effective thermal conductivity for single-bore vertical heat exchangers with groundwater flow.

Author(s) : BARCENILLA J. R., NUTTER D. W., COUVILLION R. J.

Summary

Design engineers currently lack means to easily incorporate the influence of underground water flow into the design of vertical-bore heat exchangers (VBHEx). This paper presents the development of a pseudo or "effective" thermal conductivity correlation for analysis of single-bore VBHEx with groundwater flow. Using the solution to the moving line heat source, a dimensionless correlation, containing parameters for Peclet number and porosity, is provided. The resulting adjusted (i.e., effective) thermal conductivity can be used for analysis and is a good first step toward accounting for groundwater flow in a VBHEx.

Details

  • Original title: Effective thermal conductivity for single-bore vertical heat exchangers with groundwater flow.
  • Record ID : 2006-2862
  • Languages: English
  • Source: ASHRAE Transactions. 2005 Annual Meeting, Denver, Colorado, USA. Volume 111, part 2 + CD-ROM.
  • Publication date: 2005

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