TY - CHAP
T1 - Influence of Thermal Conductivity and Subsurface Temperature on Life-Cycle Environmental Load of the Ground Source Heat Pump in Bangkok, Thailand
AU - Shimada, Yutaro
AU - Uchida, Youhei
AU - Kurishima, Hideaki
AU - Tokimatsu, Koji
N1 - Publisher Copyright:
© 2021, Springer Nature Singapore Pte Ltd.
PY - 2021
Y1 - 2021
N2 - The aim of this study is to evaluate the life-cycle environmental load of a ground source heat pump (GSHP) in Bangkok, Thailand. We conducted a life-cycle inventory analysis based on the assumption of the introduction of an optimally-designed GSHP to a commercial facility in Bangkok, Thailand. An air source heat pump (ASHP) was selected as a comparison target. Moreover, sensitivity analysis was conducted based on thermal conductivity and subsurface temperature to clarify the influence of changes in groundwater flow and subsurface temperature. Indicators of analysis were the life-cycle CO2, NOX, and SO2 (LC–CO2, LC–NOX, and LC–SO2, respectively) emissions. As a result, the LC–CO2, LC–NOX, and LC–SO2 emissions of GSHP were reduced by 27.8%, 24.8%, and 25.6%, respectively compared with ASHP. The LC–CO2 emissions of GSHP within the scope of sensitivity analysis were reduced by 26 to 28.6% compared with ASHP. These results show the GSHP in Bangkok could achieve smaller environmental load than the ASHP and the changes in groundwater flow and subsurface temperature do not greatly influence on the life-cycle environmental load. However, this study indicated that the large ground heat exchanger is required compared to the other areas, e.g., United Kingdom, and China. This means the economical and space constraints would be the barrier of introduction of GSHP in Bangkok. Therefore, further research is required to evaluate not only the environmental aspect, but also the economic aspect.
AB - The aim of this study is to evaluate the life-cycle environmental load of a ground source heat pump (GSHP) in Bangkok, Thailand. We conducted a life-cycle inventory analysis based on the assumption of the introduction of an optimally-designed GSHP to a commercial facility in Bangkok, Thailand. An air source heat pump (ASHP) was selected as a comparison target. Moreover, sensitivity analysis was conducted based on thermal conductivity and subsurface temperature to clarify the influence of changes in groundwater flow and subsurface temperature. Indicators of analysis were the life-cycle CO2, NOX, and SO2 (LC–CO2, LC–NOX, and LC–SO2, respectively) emissions. As a result, the LC–CO2, LC–NOX, and LC–SO2 emissions of GSHP were reduced by 27.8%, 24.8%, and 25.6%, respectively compared with ASHP. The LC–CO2 emissions of GSHP within the scope of sensitivity analysis were reduced by 26 to 28.6% compared with ASHP. These results show the GSHP in Bangkok could achieve smaller environmental load than the ASHP and the changes in groundwater flow and subsurface temperature do not greatly influence on the life-cycle environmental load. However, this study indicated that the large ground heat exchanger is required compared to the other areas, e.g., United Kingdom, and China. This means the economical and space constraints would be the barrier of introduction of GSHP in Bangkok. Therefore, further research is required to evaluate not only the environmental aspect, but also the economic aspect.
KW - Ground source heat pump
KW - Life-cycle inventory analysis
KW - Sensitivity analysis
KW - Thailand
UR - http://www.scopus.com/inward/record.url?scp=85096070050&partnerID=8YFLogxK
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U2 - 10.1007/978-981-15-6775-9_29
DO - 10.1007/978-981-15-6775-9_29
M3 - Chapter
AN - SCOPUS:85096070050
T3 - Sustainable Production, Life Cycle Engineering and Management
SP - 441
EP - 453
BT - Sustainable Production, Life Cycle Engineering and Management
PB - Springer Science and Business Media Deutschland GmbH
ER -