Building Simulation

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

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

  • Lu Xing
  • James R. Cullin
  • Jeffrey D. Spitler
Research Article Building Systems and Components


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.


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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