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.
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Xing, L., Cullin, J.R. & Spitler, J.D. Modeling of foundation heat exchangers—Comparison of numerical and analytical approaches. Build. Simul. 5, 267–279 (2012). https://doi.org/10.1007/s12273-012-0088-1
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DOI: https://doi.org/10.1007/s12273-012-0088-1