TY - JOUR
T1 - Development of suitability maps for ground-coupled heat pump systems using groundwater and heat transport models
AU - Fujii, Hikari
AU - Inatomi, Tadasuke
AU - Itoi, Ryuichi
AU - Uchida, Youhei
N1 - Funding Information:
The authors thank the Ministry of Land, Infrastructure and Transport of Japan and the Prefecture of Saga for the assistance provided during their field survey and for permission to publish the field data. This work was partly funded by Grant-in-Aid for Scientific Research (A) (16206089) and (B) (19360407) of the Japan Society for the Promotion of Science.
PY - 2007/10
Y1 - 2007/10
N2 - The thermophysical properties of subsurface materials (soils, sediments and rocks) and groundwater flow strongly affect the heat exchange rates of ground heat exchangers (GHEs). These rates can be maximized and the installation costs of the ground-coupled heat pump (GCHP) systems reduced by developing suitability maps based on local geological and hydrological information. Such maps were generated for the Chikushi Plain (western Japan) using field-survey data and a numerical modeling study. First, a field-wide groundwater model was developed for the area and the results matched against measured groundwater levels and vertical temperature profiles. Single GHE models were then constructed to simulate the heat exchange performance at different locations in the plain. Finally, suitability maps for GCHP systems were prepared using the results from the single GHE models. Variations in the heat exchange rates of over 40% revealed by the map were ascribed to differences in the GHE locations, confirming how important it is to use appropriate thermophysical data when designing GCHP systems.
AB - The thermophysical properties of subsurface materials (soils, sediments and rocks) and groundwater flow strongly affect the heat exchange rates of ground heat exchangers (GHEs). These rates can be maximized and the installation costs of the ground-coupled heat pump (GCHP) systems reduced by developing suitability maps based on local geological and hydrological information. Such maps were generated for the Chikushi Plain (western Japan) using field-survey data and a numerical modeling study. First, a field-wide groundwater model was developed for the area and the results matched against measured groundwater levels and vertical temperature profiles. Single GHE models were then constructed to simulate the heat exchange performance at different locations in the plain. Finally, suitability maps for GCHP systems were prepared using the results from the single GHE models. Variations in the heat exchange rates of over 40% revealed by the map were ascribed to differences in the GHE locations, confirming how important it is to use appropriate thermophysical data when designing GCHP systems.
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U2 - 10.1016/j.geothermics.2007.06.002
DO - 10.1016/j.geothermics.2007.06.002
M3 - Article
AN - SCOPUS:34748842644
SN - 0375-6505
VL - 36
SP - 459
EP - 472
JO - Geothermics
JF - Geothermics
IS - 5
ER -
