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04.02.2017 | Paper

Performance evaluation of a ground-source heat pump system utilizing a flowing well and estimation of suitable areas for its installation in Aizu Basin, Japan

verfasst von: Gaurav Shrestha, Youhei Uchida, Satoru Kuronuma, Mutsumi Yamaya, Masahiko Katsuragi, Shohei Kaneko, Naoaki Shibasaki, Mayumi Yoshioka

Erschienen in: Hydrogeology Journal | Ausgabe 5/2017

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Abstract

Development of a ground-source heat pump (GSHP) system with higher efficiency, and evaluation of its operating performance, is essential to expand the growth of GSHP systems in Japan. A closed-loop GSHP system was constructed utilizing a flowing (artesian) well as a ground heat exchanger (GHE). The system was demonstrated for space-heating and space-cooling of a room (area 126.7 m²) in an office building. The average coefficient of performance was found to be 4.5 for space-heating and 8.1 for space-cooling. The maximum heat exchange rate was 70.8 W/m for space-heating and 57.6 W/m for space-cooling. From these results, it was determined that a GSHP system with a flowing well as a GHE can result in higher performance. With this kind of highly efficient system, energy saving and cost reduction can be expected. In order to assess appropriate locations for the installation of similar kinds of GSHP systems in Aizu Basin, a suitability map showing the distribution of groundwater up-flowing areas was prepared based on the results of a regional-scale three-dimensional analytical model. Groundwater up-flowing areas are considered to be suitable because the flowing well can be constructed at these areas. Performance evaluation of the GSHP system utilizing the flowing well, in conjunction with the prepared suitability map for its installation, can assist in the promotion of GSHP systems in Japan.

Vorheriger Artikel Improving the groundwater-well siting approach in consolidated rock in Nampula Province, Mozambique

Nächster Artikel Improved barometric and loading efficiency estimates using packers in monitoring wells

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Titel: Performance evaluation of a ground-source heat pump system utilizing a flowing well and estimation of suitable areas for its installation in Aizu Basin, Japan
verfasst von: Gaurav Shrestha
Youhei Uchida
Satoru Kuronuma
Mutsumi Yamaya
Masahiko Katsuragi
Shohei Kaneko
Naoaki Shibasaki
Mayumi Yoshioka
Publikationsdatum: 04.02.2017
Verlag: Springer Berlin Heidelberg
Erschienen in: Hydrogeology Journal / Ausgabe 5/2017
Print ISSN: 1431-2174
Elektronische ISSN: 1435-0157
DOI: https://doi.org/10.1007/s10040-017-1536-x

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