IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v42y2012icp118-124.html
   My bibliography  Save this article

Design and performance study of the ground-coupled heat pump system with an operating parameter

Author

Listed:
  • Chung, Jin Taek
  • Choi, Jong Min

Abstract

In the present study, the performance of a heat pump unit is measured by varying the secondary fluid flow rate and compressor speed. Test results are applied to design the GCHP system, and then the effects of the flow rate and the thermal conductivity on the performance of the system and the size of GLHX are analyzed. For all compressor speed and operating modes, the COP of the heat pump unit with an increment of flow rate is enhanced, while the increasing rate of that decrease. For low flow rate conditions, the unit COP and the system COP according to the flow rate increase due to a rise of heating and cooling capacity and a drop of power consumption. When the flow rate increases under high flow rate conditions, heat pump unit COP is slightly enhanced in the heating and cooling modes. However, the variation of the system COP in the cooling mode is negligible and that in the heating mode decreases even though the flow rate increases. The GLHX length increases with the increase of the flow rate, while it decreases with an increment of the thermal conductivity. As the thermal conductivity decreases, the increasing rate of the GLHX length according to the flow rate rises. A higher secondary fluid flow rate can increase the performance of the heat pump unit, while it makes the length of the GLHX longer. As a result, it is suggested that the flow rate of the heat pump unit have to be checked to optimize the system, and consequently, the system COP and the flow rate should be considered as the important design parameters in order to reduce the installation cost and save energy in the GCHP system.

Suggested Citation

  • Chung, Jin Taek & Choi, Jong Min, 2012. "Design and performance study of the ground-coupled heat pump system with an operating parameter," Renewable Energy, Elsevier, vol. 42(C), pages 118-124.
    • Handle: RePEc:eee:renene:v:42:y:2012:i:c:p:118-124
    DOI: 10.1016/j.renene.2011.08.054
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148111005167
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2011.08.054?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Hwang, Suckho & Ooka, Ryozo & Nam, Yujin, 2010. "Evaluation of estimation method of ground properties for the ground source heat pump system," Renewable Energy, Elsevier, vol. 35(9), pages 2123-2130.
    2. Mustafa Omer, Abdeen, 2008. "Ground-source heat pumps systems and applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 12(2), pages 344-371, February.
    3. Hwang, Yujin & Lee, Jae-Keun & Jeong, Young-Man & Koo, Kyung-Min & Lee, Dong-Hyuk & Kim, In-Kyu & Jin, Sim-Won & Kim, Soo H., 2009. "Cooling performance of a vertical ground-coupled heat pump system installed in a school building," Renewable Energy, Elsevier, vol. 34(3), pages 578-582.
    4. Richard J. Green and Michael G. Pollitt, 2008. "Introduction," The Energy Journal, International Association for Energy Economics, vol. 0(Special I), pages 1-2.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Han, Chanjuan & Yu, Xiong (Bill), 2016. "Sensitivity analysis of a vertical geothermal heat pump system," Applied Energy, Elsevier, vol. 170(C), pages 148-160.
    2. Kwon, Ohkyung & Bae, KyungJin & Park, Chasik, 2014. "Cooling characteristics of ground source heat pump with heat exchange methods," Renewable Energy, Elsevier, vol. 71(C), pages 651-657.
    3. Zhu, Lin & Yu, Jianlin & Zhou, Mengliu & Wang, Xiao, 2014. "Performance analysis of a novel dual-nozzle ejector enhanced cycle for solar assisted air-source heat pump systems," Renewable Energy, Elsevier, vol. 63(C), pages 735-740.
    4. Girard, Aymeric & Gago, Eulalia Jadraque & Muneer, Tariq & Caceres, Gustavo, 2015. "Higher ground source heat pump COP in a residential building through the use of solar thermal collectors," Renewable Energy, Elsevier, vol. 80(C), pages 26-39.
    5. Han, Chanjuan & Yu, Xiong (Bill), 2016. "Performance of a residential ground source heat pump system in sedimentary rock formation," Applied Energy, Elsevier, vol. 164(C), pages 89-98.
    6. Cho, Honghyun & Choi, Jong Min, 2014. "The quantitative evaluation of design parameter's effects on a ground source heat pump system," Renewable Energy, Elsevier, vol. 65(C), pages 2-6.
    7. Bruno Piga & Alessandro Casasso & Francesca Pace & Alberto Godio & Rajandrea Sethi, 2017. "Thermal Impact Assessment of Groundwater Heat Pumps (GWHPs): Rigorous vs. Simplified Models," Energies, MDPI, vol. 10(9), pages 1-19, September.
    8. Casasso, Alessandro & Sethi, Rajandrea, 2014. "Efficiency of closed loop geothermal heat pumps: A sensitivity analysis," Renewable Energy, Elsevier, vol. 62(C), pages 737-746.
    9. Casasso, Alessandro & Sethi, Rajandrea, 2016. "G.POT: A quantitative method for the assessment and mapping of the shallow geothermal potential," Energy, Elsevier, vol. 106(C), pages 765-773.
    10. Michopoulos, A. & Zachariadis, T. & Kyriakis, N., 2013. "Operation characteristics and experience of a ground source heat pump system with a vertical ground heat exchanger," Energy, Elsevier, vol. 51(C), pages 349-357.
    11. Casasso, Alessandro & Sethi, Rajandrea, 2015. "Modelling thermal recycling occurring in groundwater heat pumps (GWHPs)," Renewable Energy, Elsevier, vol. 77(C), pages 86-93.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Choi, Jong Min & Park, Yongjung & Kang, Shin-Hyung, 2013. "Heating performance verification of a ground source heat pump system with U-tube and double tube type GLHEs," Renewable Energy, Elsevier, vol. 54(C), pages 32-39.
    2. Choi, Jong Min & Park, Yong-Jung & Kang, Shin-Hyung, 2014. "Temperature distribution and performance of ground-coupled multi-heat pump systems for a greenhouse," Renewable Energy, Elsevier, vol. 65(C), pages 49-55.
    3. Blum, Philipp & Campillo, Gisela & Kölbel, Thomas, 2011. "Techno-economic and spatial analysis of vertical ground source heat pump systems in Germany," Energy, Elsevier, vol. 36(5), pages 3002-3011.
    4. Li, Min & Lai, Alvin C.K., 2015. "Review of analytical models for heat transfer by vertical ground heat exchangers (GHEs): A perspective of time and space scales," Applied Energy, Elsevier, vol. 151(C), pages 178-191.
    5. Choi, Hangseok & Cho, Honghyun & Choi, Jong Min, 2012. "Refrigerant amount detection algorithm for a ground source heat pump unit," Renewable Energy, Elsevier, vol. 42(C), pages 111-117.
    6. Zhang, Shuyang & Zhang, Lun & Zhang, Xiaosong, 2022. "Clustering based on dynamic time warping to extract typical daily patterns from long-term operation data of a ground source heat pump system," Energy, Elsevier, vol. 249(C).
    7. Sivasakthivel, T. & Murugesan, K. & Thomas, H.R., 2014. "Optimization of operating parameters of ground source heat pump system for space heating and cooling by Taguchi method and utility concept," Applied Energy, Elsevier, vol. 116(C), pages 76-85.
    8. Zhai, X.Q. & Qu, M. & Yu, X. & Yang, Y. & Wang, R.Z., 2011. "A review for the applications and integrated approaches of ground-coupled heat pump systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(6), pages 3133-3140, August.
    9. Jalaluddin, & Miyara, Akio & Tsubaki, Koutaro & Inoue, Shuntaro & Yoshida, Kentaro, 2011. "Experimental study of several types of ground heat exchanger using a steel pile foundation," Renewable Energy, Elsevier, vol. 36(2), pages 764-771.
    10. Crispin H. V. Cooper, 2020. "Quantitative Models of Well-Being to Inform Policy: Problems and Opportunities," Sustainability, MDPI, vol. 12(8), pages 1-13, April.
    11. Charles Ka Yui Leung & Joe Cho Yiu Ng, 2018. "Macro Aspects of Housing," GRU Working Paper Series GRU_2018_016, City University of Hong Kong, Department of Economics and Finance, Global Research Unit.
    12. Xin Zhou & Hideyuki Mori, 2011. "National institutional response to climate change and stakeholder participation: a comparative study for Asia," International Environmental Agreements: Politics, Law and Economics, Springer, vol. 11(4), pages 297-319, November.
    13. Sommer, Wijbrand & Valstar, Johan & Leusbrock, Ingo & Grotenhuis, Tim & Rijnaarts, Huub, 2015. "Optimization and spatial pattern of large-scale aquifer thermal energy storage," Applied Energy, Elsevier, vol. 137(C), pages 322-337.
    14. Archan Shah & Moncef Krarti & Joe Huang, 2022. "Energy Performance Evaluation of Shallow Ground Source Heat Pumps for Residential Buildings," Energies, MDPI, vol. 15(3), pages 1-25, January.
    15. Deng, Zhenpeng & Nian, Yongle & Cheng, Wen-long, 2023. "Estimation method of layered ground thermal conductivity for U-tube BHE based on the quasi-3D model," Renewable Energy, Elsevier, vol. 213(C), pages 121-133.
    16. Miroslav Navratil & Andrea Kolkova, 2019. "Decomposition and Forecasting Time Series in the Business Economy Using Prophet Forecasting Model," Central European Business Review, Prague University of Economics and Business, vol. 2019(4), pages 26-39.
    17. Bakirci, Kadir & Colak, Derya, 2012. "Effect of a superheating and sub-cooling heat exchanger to the performance of a ground source heat pump system," Energy, Elsevier, vol. 44(1), pages 996-1004.
    18. Kuang-Hua Hu & Fu-Hsiang Chen & Gwo-Hshiung Tzeng, 2016. "Evaluating the Improvement of Sustainability of Sports Industry Policy Based on MADM," Sustainability, MDPI, vol. 8(7), pages 1-21, June.
    19. Nguyen, Hiep V. & Law, Ying Lam E. & Alavy, Masih & Walsh, Philip R. & Leong, Wey H. & Dworkin, Seth B., 2014. "An analysis of the factors affecting hybrid ground-source heat pump installation potential in North America," Applied Energy, Elsevier, vol. 125(C), pages 28-38.
    20. Li, Biao & Han, Zongwei & Bai, Chenguang & Hu, Honghao, 2019. "The influence of soil thermal properties on the operation performance on ground source heat pump system," Renewable Energy, Elsevier, vol. 141(C), pages 903-913.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:42:y:2012:i:c:p:118-124. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.