TY - JOUR
T1 - An environmental and economic assessment for selecting the optimal ground heat exchanger by considering the entering water temperature
AU - Kim, Jimin
AU - Hong, Taehoon
AU - Chae, Myeongsoo
AU - Koo, Choongwan
AU - Jeong, Jaemin
N1 - Publisher Copyright:
© 2015 by the authors.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - In order to solve environmental problems such as global warming and resource depletion in the construction industry, interest in new renewable energy (NRE) systems has increased. The ground source heat pump (GSHP) system is the most efficient system among NRE systems. However, since the initial investment cost of the GSHP is quite expensive, a feasibility study needs to be conducted from the life-cycle perspective. Meanwhile, the efficiency of GSHP depends most significantly on the entering water temperature (EWT) of the ground heat exchanger (GHE). Therefore, this study aims to assess the environmental and economic effects of the use of GHE for selecting the optimal GHE. This study was conducted in three steps: (i) establishing the basic information and selecting key factors affecting GHE performances; (ii) making possible alternatives of the GHE installation by considering EWT; and (iii) using life-cycle assessment and life-cycle cost, as well as comprehensive evaluation of the environmental and economic effects on the GHE. These techniques allow for easy and accurate determination of the optimal design of the GHE from the environmental and economic effects in the early design phase. In future research, a multi-objective decision support model for the GSHP will be developed.
AB - In order to solve environmental problems such as global warming and resource depletion in the construction industry, interest in new renewable energy (NRE) systems has increased. The ground source heat pump (GSHP) system is the most efficient system among NRE systems. However, since the initial investment cost of the GSHP is quite expensive, a feasibility study needs to be conducted from the life-cycle perspective. Meanwhile, the efficiency of GSHP depends most significantly on the entering water temperature (EWT) of the ground heat exchanger (GHE). Therefore, this study aims to assess the environmental and economic effects of the use of GHE for selecting the optimal GHE. This study was conducted in three steps: (i) establishing the basic information and selecting key factors affecting GHE performances; (ii) making possible alternatives of the GHE installation by considering EWT; and (iii) using life-cycle assessment and life-cycle cost, as well as comprehensive evaluation of the environmental and economic effects on the GHE. These techniques allow for easy and accurate determination of the optimal design of the GHE from the environmental and economic effects in the early design phase. In future research, a multi-objective decision support model for the GSHP will be developed.
KW - Entering water temperature
KW - Ground heat exchanger
KW - Ground source heat pump
KW - Life-cycle assessment
KW - Life-cycle cost
UR - https://www.scopus.com/pages/publications/84941686172
U2 - 10.3390/en8087752
DO - 10.3390/en8087752
M3 - Article
AN - SCOPUS:84941686172
SN - 1996-1073
VL - 8
SP - 7752
EP - 7776
JO - Energies
JF - Energies
IS - 8
ER -
