Study on performance of energy textile installed in tunnel by CFD analysis and field tests

Chulho Lee, Sangwoo Park, Hangseok Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Textile-type ground-coupled heat exchangers, so called "energy textile", were installed in an abandoned railroad tunnel, South Korea. In order to monitor the thermal behavior of the energy textile, a constant-temperature water bath (CWB) was adopted as a heat source for both cooling and heating operation. In the course of the experimental measurement, the inlet and outlet fluid temperatures of the energy textile, pumping rate, temperature distribution in the ground, and air temperature inside the tunnel were continuously recorded. Then CFD (Computational Fluid Dynamics) numerical analysis was performed to simulate results from field measurements for the selected energy textiles with consideration of air temperature inside the tunnel. The convection coefficient method was applied in a developed numerical model with UDF (User Define Function) to consider effect of the air temperature inside the tunnel. Finally, the thermal performance of the energy textile is discussed with various types of ground-coupled heat exchangers.

Original languageEnglish
Title of host publicationGeotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 8th Int. Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, TC204 ISSMGE - IS-SEOUL 2014
PublisherTaylor and Francis - Balkema
Pages501-504
Number of pages4
ISBN (Print)9781138027008
Publication statusPublished - 2014 Jan 1
Event8th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, TC204 ISSMGE - IS-SEOUL 2014 - Seoul, Korea, Republic of
Duration: 2014 Aug 252014 Aug 27

Other

Other8th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, TC204 ISSMGE - IS-SEOUL 2014
CountryKorea, Republic of
CitySeoul
Period14/8/2514/8/27

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering

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