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A Pilot Study on Geothermal Heat Pump (GHP) Use for Cooling Operations, and on GHP Site Selection in Tropical Regions Based on a Case Study in Thailand

Author

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  • Sasimook Chokchai

    (Department of Geology, Chulalongkorn University, 254 Phayathai Rd., Patumwan, Bangkok 10330, Thailand)

  • Srilert Chotpantarat

    (Department of Geology, Chulalongkorn University, 254 Phayathai Rd., Patumwan, Bangkok 10330, Thailand
    Research Program on Controls of Hazardous Contaminants in Raw Water Resources for Water Scarcity Resilience, Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok 10330, Thailand)

  • Isao Takashima

    (The Mining Museum, Graduate School of Engineering and Resource Science, Akita University, 1-1 Tegatagakuen-machi, Akita 010-8502, Japan)

  • Youhei Uchida

    (Renewable Energy Research Center, National Institute of Advanced Industrial Science and Technology, 2-2-9 Machiikedai, Koriyama 963-0298, Japan)

  • Arif Widiatmojo

    (Renewable Energy Research Center, National Institute of Advanced Industrial Science and Technology, 2-2-9 Machiikedai, Koriyama 963-0298, Japan)

  • Kasumi Yasukawa

    (Renewable Energy Research Center, National Institute of Advanced Industrial Science and Technology, 2-2-9 Machiikedai, Koriyama 963-0298, Japan)

  • Punya Charusiri

    (Department of Geology, Chulalongkorn University, 254 Phayathai Rd., Patumwan, Bangkok 10330, Thailand)

Abstract

In order to reduce electricity consumption, the vertical loop geothermal heat pump (GHP) system coupled with a normal air conditioner was installed in an experimental room in the Parot Racha Building, Chulalongkorn University, Bangkok, Thailand for a comparative, long-term measurement program. The decrease in electricity consumption was approximately 30%. On the basis of the data derived from our measurements, the underground temperature seemed to be consistent and lower than the average outside air temperature, over two years. The underground system consisted mainly of two 50-m-long drilling wells and pipes with a total length of 170 m. The well performance was not examined, but both soil and groundwater aquifer (Bangkok aquifer) at 25 to 50 m. could be utilized for the cooling operation. Moreover, the major controlling factors of electricity consumption were found to be the outside air temperatures and the underground water circulation temperatures. In addition, we considered the geology, underground temperature, and aquifer of Bangkok concluding that almost all Bangkok areas are suitable for GHP installation, except for those where the subsurface temperature is too high compared with the outside air temperature.

Suggested Citation

  • Sasimook Chokchai & Srilert Chotpantarat & Isao Takashima & Youhei Uchida & Arif Widiatmojo & Kasumi Yasukawa & Punya Charusiri, 2018. "A Pilot Study on Geothermal Heat Pump (GHP) Use for Cooling Operations, and on GHP Site Selection in Tropical Regions Based on a Case Study in Thailand," Energies, MDPI, vol. 11(9), pages 1-17, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:9:p:2356-:d:168220
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    References listed on IDEAS

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    1. Blum, Philipp & Campillo, Gisela & Münch, Wolfram & Kölbel, Thomas, 2010. "CO2 savings of ground source heat pump systems – A regional analysis," Renewable Energy, Elsevier, vol. 35(1), pages 122-127.
    2. Tarnawski, V.R. & Leong, W.H. & Momose, T. & Hamada, Y., 2009. "Analysis of ground source heat pumps with horizontal ground heat exchangers for northern Japan," Renewable Energy, Elsevier, vol. 34(1), pages 127-134.
    3. Li, Huai & Xu, Wei & Yu, Zhen & Wu, Jianlin & Sun, Zhifeng, 2017. "Application analyze of a ground source heat pump system in a nearly zero energy building in China," Energy, Elsevier, vol. 125(C), pages 140-151.
    4. Bayer, Peter & Saner, Dominik & Bolay, Stephan & Rybach, Ladislaus & Blum, Philipp, 2012. "Greenhouse gas emission savings of ground source heat pump systems in Europe: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(2), pages 1256-1267.
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    Cited by:

    1. Arif Widiatmojo & Sasimook Chokchai & Isao Takashima & Yohei Uchida & Kasumi Yasukawa & Srilert Chotpantarat & Punya Charusiri, 2019. "Ground-Source Heat Pumps with Horizontal Heat Exchangers for Space Cooling in the Hot Tropical Climate of Thailand," Energies, MDPI, vol. 12(7), pages 1-22, April.
    2. Adriana Greco & Edison Gundabattini & Darius Gnanaraj Solomon & Raja Singh Rassiah & Claudia Masselli, 2022. "A Review on Geothermal Renewable Energy Systems for Eco-Friendly Air-Conditioning," Energies, MDPI, vol. 15(15), pages 1-17, July.
    3. Roy, Debasree & Chakraborty, Tanusree & Basu, Dipanjan & Bhattacharjee, Bishwajit, 2020. "Feasibility and performance of ground source heat pump systems for commercial applications in tropical and subtropical climates," Renewable Energy, Elsevier, vol. 152(C), pages 467-483.
    4. Sorranat Ratchawang & Srilert Chotpantarat & Sasimook Chokchai & Isao Takashima & Youhei Uchida & Punya Charusiri, 2022. "A Review of Ground Source Heat Pump Application for Space Cooling in Southeast Asia," Energies, MDPI, vol. 15(14), pages 1-18, July.
    5. Valeria Palomba & Efstratios Varvagiannis & Sotirios Karellas & Andrea Frazzica, 2019. "Hybrid Adsorption-Compression Systems for Air Conditioning in Efficient Buildings: Design through Validated Dynamic Models," Energies, MDPI, vol. 12(6), pages 1-28, March.
    6. Yutaro Shimada & Youhei Uchida & Isao Takashima & Srilert Chotpantarat & Arif Widiatmojo & Sasimook Chokchai & Punya Charusiri & Hideaki Kurishima & Koji Tokimatsu, 2020. "A Study on the Operational Condition of a Ground Source Heat Pump in Bangkok Based on a Field Experiment and Simulation," Energies, MDPI, vol. 13(1), pages 1-17, January.
    7. Shimada, Yutaro & Tokimatsu, Koji & Asawa, Takashi & Uchida, Youhei & Tomigashi, Akira & Kurishima, Hideaki, 2021. "Subsurface utilization as a heat sink for large-scale ground source heat pump: Case study in Bangkok, Thailand," Renewable Energy, Elsevier, vol. 180(C), pages 966-979.

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