Building Simulation

, Volume 5, Issue 3, pp 267–279 | Cite as

Modeling of foundation heat exchangers—Comparison of numerical and analytical approaches

Research Article Building Systems and Components

Abstract

Foundation heat exchangers (FHXs) are an alternative to more costly ground heat exchangers utilized in ground-source heat pump (GSHP) systems serving detached or semi-detached houses. Simulation models of FHX are needed for design and energy calculations. This paper looks at two approaches used for development of simulation models for FHX systems: a simplified analytical model and a detailed numerical model. The analytical model is based on superposition of line sources and sinks. The numerical model is a two-dimensional finite volume model implemented in the HVACSIM+ environment. Both the analytical and numerical models have been validated again experimental results from a test house located in Oak Ridge, Tennessee. Six geographically diverse locations are chosen for a parametric study; results of the two models are compared, and differences between the results are investigated.

Keywords

foundation heat exchanger ground-source heat pump simulation ground heat exchanger 

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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Lu Xing
    • 1
  • James R. Cullin
    • 1
  • Jeffrey D. Spitler
    • 1
  1. 1.School of Mechanical and Aerospace EngineeringOklahoma State UniversityStillwaterUSA

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