TY - JOUR
T1 - A study on the operational condition of a ground source heat pump in Bangkok based on a field experiment and simulation
AU - Shimada, Yutaro
AU - Uchida, Youhei
AU - Takashima, Isao
AU - Chotpantarat, Srilert
AU - Widiatmojo, Arif
AU - Chokchai, Sasimook
AU - Charusiri, Punya
AU - Kurishima, Hideaki
AU - Tokimatsu, Koji
N1 - Funding Information:
This research was funded by the Food and Water Cluster, Ratchadaphiseksomphot Endowment Fund of Chulalongkorn University, National Research University Project, Office of Higher Education Commission grant number NRU59-052-EN and WCU-58-017-EN, the International Research Integration: Chula Research Scholar program, the Ratchadaphiseksomphot Endowment Fund (GCURS-59-06-79-01), the Ratchadaphisek Sompoch Endowment Fund (2019), Chulalongkorn University (762003-CC) and the S&T Postgraduate Education and Research Development Office (PERDO) for the financial support of the Research Program.
Funding Information:
Funding: This research was funded by the Food and Water Cluster, Ratchadaphiseksomphot Endowment Fund of Chulalongkorn University, National Research University Project, Office of Higher Education Commission grant number NRU59-052-EN and WCU-58-017-EN, the International Research Integration: Chula Research Scholar program, the Ratchadaphiseksomphot Endowment Fund (GCURS-59-06-79-01), the Ratchadaphisek Sompoch Endowment Fund (2019), Chulalongkorn University (762003-CC) and the S&T Postgraduate Education and Research Development Office (PERDO) for the financial support of the Research Program.
Publisher Copyright:
© 2020 by the authors.
PY - 2020/1/6
Y1 - 2020/1/6
N2 - The deployment of highly efficient cooling equipment is expected to promote energy savings and greenhouse gas emissions reductions in the tropics. A ground source heat pump (GSHP) has high energy-savings potential for use in Bangkok, Thailand. This study aimed to elucidate the operational conditions of a GSHP when used in Bangkok which was expected to achieve a higher efficiency than an air source heat pump (ASHP) over the long term. An operational experiment on a pilot facility in Bangkok and a simulation over a three-year GSHP operation were conducted. As a result of the operational experiment and simulation, the proposed operational condition was that the 90th percentile value of the hourly heat pump (HP) inlet temperature did not exceed 50C above that of the hourly annual ambient temperature during the third year of operation. When a GSHP designed based on this condition was utilized for a small government building, the required number of boreholes were 24, 4, and 3 for air-conditioned areas of 200, 40, and 25 m2, respectively, which achieved 40% energy savings. Thus, a small-scale GSHP in Bangkok designed based on the proposed condition can achieve high effciency within space limitations.
AB - The deployment of highly efficient cooling equipment is expected to promote energy savings and greenhouse gas emissions reductions in the tropics. A ground source heat pump (GSHP) has high energy-savings potential for use in Bangkok, Thailand. This study aimed to elucidate the operational conditions of a GSHP when used in Bangkok which was expected to achieve a higher efficiency than an air source heat pump (ASHP) over the long term. An operational experiment on a pilot facility in Bangkok and a simulation over a three-year GSHP operation were conducted. As a result of the operational experiment and simulation, the proposed operational condition was that the 90th percentile value of the hourly heat pump (HP) inlet temperature did not exceed 50C above that of the hourly annual ambient temperature during the third year of operation. When a GSHP designed based on this condition was utilized for a small government building, the required number of boreholes were 24, 4, and 3 for air-conditioned areas of 200, 40, and 25 m2, respectively, which achieved 40% energy savings. Thus, a small-scale GSHP in Bangkok designed based on the proposed condition can achieve high effciency within space limitations.
KW - Air source heat pump
KW - Bangkok
KW - Ground source heat pump
KW - HP inlet temperature
KW - System coefficient of performance
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U2 - 10.3390/en13010274
DO - 10.3390/en13010274
M3 - Article
AN - SCOPUS:85078001323
VL - 13
JO - Energies
JF - Energies
SN - 1996-1073
IS - 1
M1 - 274
ER -