TY - JOUR
T1 - Comprehensive feasibility investigation of river source heat pump systems in terms of life cycle
AU - Jung, Yujun
AU - Kim, Joonbyum
AU - Kim, Heejoon
AU - Yun, Rin
AU - Park, Changyong
AU - Nam, Yujin
AU - Cho, Honghyun
AU - Lee, Hoseong
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea NRF) grant funded by the Korea government(MSIT) (No. 2020R1A5A1018153) and Korea Environment Industry & Technology Institute (KEITI) through Development of Life Cycle CO2 and Economic Feasibility Evaluation Tool for Hydrothermal Energy Project, funded by Korea Ministry of Environment (MOE) (No. 2020003150001).
Funding Information:
This work was supported by the National Research Foundation of Korea NRF) grant funded by the Korea government(MSIT) (No. 2020R1A5A1018153 ) and Korea Environment Industry & Technology Institute (KEITI) through Development of Life Cycle CO 2 and Economic Feasibility Evaluation Tool for Hydrothermal Energy Project, funded by Korea Ministry of Environment (MOE) (No. 2020003150001 ).
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/4
Y1 - 2021/4
N2 - In this study, the feasibility of thermal energy utilization in river source was comprehensively investigated by separately estimating the thermal potential of river source and evaluating the performance of a river source heat pump system. First, the thermal potential of a river water body was calculated by measuring the water temperature and flow rate. The annual natural potential, geographical potential, technical potential, and practical potential were estimated as 68,883, 64,045, 61,291, and 17,634 TJ/yr, respectively. An analysis of the practical potential of the river showed that it can sufficiently satisfy 23% of the building demand in Seoul. Second, the performance of the river source heat pump system was evaluated in terms of its life cycle performance, considering energetic, environmental, and economic metrics. When the river source heat pump system was applied to office building, the energy consumption and CO2 emissions were reduced by 6.9% and 10.5%, respectively. The results of the economic feasibility study presented a net present value of $10,587,848, an internal rate of return of 20.5%, and a payback period of 5.3 years. In addition, a parametric study showed the maximum improvement of the energy consumption, CO2 emissions, and economics are expected to be 16.4%, 19.6%, and 15.2%, respectively.
AB - In this study, the feasibility of thermal energy utilization in river source was comprehensively investigated by separately estimating the thermal potential of river source and evaluating the performance of a river source heat pump system. First, the thermal potential of a river water body was calculated by measuring the water temperature and flow rate. The annual natural potential, geographical potential, technical potential, and practical potential were estimated as 68,883, 64,045, 61,291, and 17,634 TJ/yr, respectively. An analysis of the practical potential of the river showed that it can sufficiently satisfy 23% of the building demand in Seoul. Second, the performance of the river source heat pump system was evaluated in terms of its life cycle performance, considering energetic, environmental, and economic metrics. When the river source heat pump system was applied to office building, the energy consumption and CO2 emissions were reduced by 6.9% and 10.5%, respectively. The results of the economic feasibility study presented a net present value of $10,587,848, an internal rate of return of 20.5%, and a payback period of 5.3 years. In addition, a parametric study showed the maximum improvement of the energy consumption, CO2 emissions, and economics are expected to be 16.4%, 19.6%, and 15.2%, respectively.
KW - Life cycle climate performance (LCCP)
KW - Life cycle cost (LCC)
KW - Renewable energy
KW - River source heat pump
KW - TRNSYS
KW - Thermal potential of river water
UR - http://www.scopus.com/inward/record.url?scp=85100404903&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2021.116655
DO - 10.1016/j.applthermaleng.2021.116655
M3 - Article
AN - SCOPUS:85100404903
SN - 1359-4311
VL - 188
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
M1 - 116655
ER -