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

Lu Xing; James R. Cullin; Jeffrey D. Spitler

doi:10.1007/s12273-012-0088-1

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

Lu Xing^*, James R. Cullin, Jeffrey D. Spitler

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

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.

Original language	English
Pages (from-to)	267-279
Number of pages	13
Journal	Building Simulation
Volume	5
Issue number	3
Early online date	13 Jul 2012
DOIs	https://doi.org/10.1007/s12273-012-0088-1
Publication status	Published - 1 Sept 2012
Externally published	Yes

Keywords

Foundation heat exchanger
Ground heat exchanger
Ground-source heat pump
Simulation

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10.1007/s12273-012-0088-1

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title = "Modeling of foundation heat exchangers—Comparison of numerical and analytical approaches",

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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author = "Lu Xing and Cullin, {James R.} and Spitler, {Jeffrey D.}",

year = "2012",

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doi = "10.1007/s12273-012-0088-1",

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journal = "Building Simulation",

issn = "1996-3599",

publisher = "Tsing Hua University",

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T1 - Modeling of foundation heat exchangers—Comparison of numerical and analytical approaches

AU - Xing, Lu

AU - Cullin, James R.

AU - Spitler, Jeffrey D.

PY - 2012/9/1

Y1 - 2012/9/1

N2 - 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.

AB - 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.

KW - Foundation heat exchanger

KW - Ground heat exchanger

KW - Ground-source heat pump

KW - Simulation

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U2 - 10.1007/s12273-012-0088-1

DO - 10.1007/s12273-012-0088-1

M3 - Article

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SN - 1996-3599

VL - 5

SP - 267

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JO - Building Simulation

JF - Building Simulation

IS - 3

ER -

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

Abstract

Keywords

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