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http://dx.doi.org/10.17664/ksgee.2014.10.1.014

Performance and Initial Cost Analysis on Various Type of Ground Heat Exchangers  

Lee, Seung-Rae (Department of Civil and Environmental Engineering, KAIST)
Yoon, Seok (Department of Civil and Environmental Engineering, KAIST)
Cho, Nam-Hyun (Research & Development Group, Incheon International Airport Co.)
Kim, Min-Jun (Department of Civil and Environmental Engineering, KAIST)
Go, Gyu-Hyun (Department of Civil and Environmental Engineering, KAIST)
Publication Information
Journal of the Korean Society for Geothermal and Hydrothermal Energy / v.10, no.1, 2014 , pp. 14-19 More about this Journal
Abstract
This paper presents a preliminary experimental and computational study on the evaluation of thermal performance and initial cost of U, W and coil type ground heat exchangers (GHEs). Heat exchange rate of the individual GHE was evaluated from the thermal resperformance test (TPT) results, and the construction cost was also calculated. For more information, GLD (ground loop design) simulations of various piping size are carried out. From simulation results, the optimized GHE was suggested based on the thermal performance and construction cost as well. Besides, the required borehole length of U and W type GHEs was calculated considering a real construction condition using GLD program.
Keywords
Ground heat exchanger; Thermal performance test; Heat exchange rate; Economic analysis; Ground loop design simulation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Sohn, B. H, Shin, H, J., and Park, S. K. (2005), "Evaluation of Effective Thermal Conductivity and Thermal Resistance in Ground Heat Exchanger Boreholes", Journal of SAREK, Vol. 17, No. 8, pp. 695-703.
2 Lim, H. J., Kong, H. J., Kang, S. J., Choi, J. H. (2011). "The effect of the installation condition of ground loop heat exchanger to the thermal conductivity and borehole resistance" Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 23, No. 2, pp. 95-102.   DOI   ScienceOn
3 Park, H., Lee S. R, Yoon, S, Shin, H. S, Lee D. S. (2012) "Case study of heat transfer behavior of helical ground heat exchanger" Energy and Building, Vol 53, pp. 137-44.
4 Jun, L., Xu, Z., Jun, G., Jie, Y. (2009) "Evaluation of heat exchange rate of GHE in geothermal heat pump systems" Renewable Energy, Vol 34, pp. 2898-904.   DOI   ScienceOn
5 Gao, J., Zhang, X., Liu, J., Li, K., and Yang, J. (2008), "Numerical and experimental assessment of thermal performance of vertical energy piles: An application" Applied Energy, Vol 85, pp. 901-910.   DOI   ScienceOn
6 Geothermal System Design (2011), Geothermal Energy Education Center, Konkiyon.
7 Gaia Geothermal. Ground Loop Design Software, GLD2012.
8 Gao, J., Zhang, X., Liu, J., Li, K., and Yang, J. (2008), "Thermal performance and ground temperature of vertical pile-foundation heat exchangers: A case study", Applied Thermal Engineering Vol. 28, pp. 2295-304.   DOI   ScienceOn
9 Yoon, S., Go, G. H, Lee, S. R., Cho, N. H. (2013), "Evaluation of heat exchange rate of different types of ground heat exchangers" Journal of the Korean Society of Civil Engineers, Vol. 33, No. 6, pp. 2393-400.   DOI   ScienceOn