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http://dx.doi.org/10.7843/kgs.2015.31.5.23

Evaluation of a Ground Heat Exchanger Appropriate for the Site of the Third Stage Construction of Incheon International Airport  

Cho, Nam-Hyun (Airport Research Institute, Incheon Airport)
Song, Jung-Tae (Airport Research Institute, Incheon Airport)
Yoon, Seok (Dept. of Civil and Environmental Engineering, KAIST)
Lee, Seung-Rae (Dept. of Civil and Environmental Engineering, KAIST)
Publication Information
Journal of the Korean Geotechnical Society / v.31, no.5, 2015 , pp. 23-33 More about this Journal
Abstract
In the present study, a ground heat exchanger was installed for each heat source in the system at the site to evaluate ground heat conductivity, constructability, and economic feasibility; the factors considered in the study included ground heat, groundwater, fillers (such as bentonite and pea pebbles) and the shape of the heat exchange pipe (e.g., U and D-U). The aim was to determine the ground heat exchanger appropriate for the geothermal system in the 3rd-phase construction of Incheon International Airport. A comparative cost analysis of the initial costs based on the above information showed that although the initial costs of the regular vertical closed loop-II and modified vertical closed loop were lower than those of the regular vertical closed loop-I, they could not be expected to deliver high economic efficiency from the viewpoint of constructability (filler injection, heat exchange pipe insertion). The initial costs proved to be higher in the case of Geohil.
Keywords
GHE; Ground thermal conductivity; Grouting material; Vertical Closed Loop; Geohil;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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