Simulation of a Single Vertical U-Tube Ground Heat Exchanger in an Infinite Medium

Geothermal (ground-source) heat pumps (GHPs) are an efficient alternative to conventional methods of conditioning buildings. However, GHP systems can have relatively high installation costs because of the ground heat exchanger. Proper sizing of the exchanger is critical to performance. Vertical U-tu...

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Bibliographic Details
Published inASHRAE transactions Vol. 103; p. 651
Main Authors Rottmayer, Steve P, Beckman, William A, Mitchell, John W
Format Journal Article Conference Proceeding
LanguageEnglish
Published Atlanta American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc 1997
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Atlanta, GA (United States)
Subjects
ENERGY CONSERVATION
ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
FINITE DIFFERENCE METHOD
GROUND SOURCE HEAT PUMPS
HEAT EXCHANGERS
MATHEMATICAL MODELS
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Summary:Geothermal (ground-source) heat pumps (GHPs) are an efficient alternative to conventional methods of conditioning buildings. However, GHP systems can have relatively high installation costs because of the ground heat exchanger. Proper sizing of the exchanger is critical to performance. Vertical U-tube heat exchangers are commonly used as the ground heat exchanger, but the design and determination of the operating performance is difficult because of the unique heat transfer situation. This paper proposes a U-tube heat exchanger model based on finite-difference methods that can be used in system design and annual performance simulations.
Bibliography:CONF-970668-
ISSN:0001-2505