Browse > Article
http://dx.doi.org/10.7474/TUS.2013.23.5.442

A Comparative Study on Heat Loss in Rock Cavern Type and Above-Ground Type Thermal Energy Storages  

Park, Jung-Wook (KIGAM)
Ryu, Dongwoo (KIGAM)
Park, Dohyun (KIGAM)
Choi, Byung-Hee (KIGAM)
Synn, Joong-Ho (KIGAM)
Sunwoo, Choon (KIGAM)
Publication Information
Tunnel and Underground Space / v.23, no.5, 2013 , pp. 442-453 More about this Journal
Abstract
A large-scale high-temperature thermal energy storage(TES) was numerically modeled and the heat loss through storage tank walls was analyzed using a commercial code, FLAC3D. The operations of rock cavern type and above-ground type thermal energy storages with identical operating condition were simulated for a period of five consecutive years, in which it was assumed that the dominant heat transfer mechanism would be conduction in massive rock for the former and convection in the atmosphere for the latter. The variation of storage temperature resulting from periodic charging and discharging of thermal energy was considered in each simulation, and the effect of insulation thickness on the characteristics of heat loss was also examined. A comparison of the simulation results of different storage models presented that the heat loss rate of above-ground type TES was maintained constant over the operation period, while that of rock cavern type TES decreased rapidly in the early operation stage and tended to converge towards a certain value. The decrease in heat loss rate of rock cavern type TES can be attributed to the reduction in heat flux through storage tank walls followed by increase in surrounding rock mass temperature. The amount of cumulative heat loss from rock cavern type TES over a period of five-year operation was 72.7% of that from above-ground type TES. The heat loss rate of rock cavern type obtained in long-period operation showed less sensitive variations to insulation thickness than that of above-ground type TES.
Keywords
Thermal energy storage (TES); Rock cavern type thermal energy storage; Above-ground type thermal energy storage; Heat loss;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 김진수, 강용혁, 2006, 고온 축열 기술개발동향. 태양에너지, Vol. 5, No. 2, pp. 12-19.
2 ASHRAE, 2009, ASHRAE Handbook-Fundamentals.
3 Bergman, T,L., A.S. Lavine, F.P. Incropera, D.P. DeWitt, 2011, Fundamentals of Heat and Mass Transfer. Seventh edition, Wiley, Hoboken, pp. 605.
4 Coutier, J.P., E. Farber, 1982, Two applications of a numerical approach of heat transfer process within rock beds. Solar Energy, Vol. 29, pp. 451-462.   DOI   ScienceOn
5 Itasca Consulting Group Inc., 2009, FLAC3D (Fast Lagrangian Analysis of Continua in 3 Dimensions) version 4.0. Minneapolis: ICG.
6 Kim, Y.M., J.H. Lee, S.J. Kim, D. Favrat, 2012, Potential and evolution of compressed air energy storage: energy and exergy analyses. Entropy, Vol. 14, pp. 1501-1521.   DOI
7 Korea Meteorological Administration, 2012, Annual climatological report.
8 Park, D., H.M. Kim, D.W. Ryu, B.H. Choi, C. Sunwoo, K.C. Han, 2012, Numerical study on the thermal stratification behavior in underground rock cavern for thermal energy storage (TES). Tunnel and Underground Space, Vol. 22, No. 3, pp. 188-195.   DOI
9 Park, J.W., D.W. Ryu, D. Park, B.H. Choi, J.H. Synn, C. Sunwoo, 2013, Thermal energy balance analysis of a packed bed for rock cavern thermal energy storage. Tunnel and Underground Space, Vol. 23, No. 3, pp. 241-259.   DOI
10 RWE Power, 2011, ADELE-Adiabatic compressed-air energy storage for electricity Supply. Brochure, http://www.rwe.com.
11 Schumann, T.E., 1929, Heat transfer: a liquid flowing through a porous prism. Journal of the Franklin Institute. Vol. 208, pp. 405-416.   DOI   ScienceOn
12 Shin, B.C., S.D. Kim, K.Y. Park, W.H. Park, 1987, Characteristics of high-temperature energy storage materials. Journal of the Korean solar energy society, Vol. 7, No. 1, pp. 61-74.   과학기술학회마을
13 SKANSKA, 1983, Swedish rock technique: Lyckebo seasonal energy storage plant, SKANSKA technical brochure.
14 Zanganeh, G., A. Pedretti, S. Zavattoni, M. Barbato, A. Steinfeld, 2012, Packed-bed thermal storage for concentrated solar power-Pilot-scale demonstration and industrialscale design. Solar Energy, Vol. 86, pp. 3084-3098.   DOI   ScienceOn
15 Zunft, S., C. Jakiel, M. Koller, C. Bullough, 2006, Adiabatic compressed air energy storage for the grid integration of wind power. Sixth international workshop on large-scale Integration of wind power and transmission networks for offshore wind farms, pp. 26-28.