Performance Simulation and Analysis of the Solar Thermal Storage System Using Heat Pipe

히트파이프를 사용한 태양열 축열시스템의 성능모사 및 해석

  • Jung, Eui-Guk (New and Renewable Energy Research Division, Korea Institute of Energy Research) ;
  • Boo, Joon-Hong (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Jong-Kyu (New and Renewable Energy Research Division, Korea Institute of Energy Research) ;
  • Kang, Yong-Heack (New and Renewable Energy Research Division, Korea Institute of Energy Research)
  • 정의국 (한국에너지연구원 신재생에너지연부본부) ;
  • 부준홍 (한국항공대학교 항공우주 및 기계공학부) ;
  • 김종규 (한국에너지연구원 신재생에너지연부본부) ;
  • 강용혁 (한국에너지연구원 신재생에너지연부본부)
  • Published : 2009.11.19

Abstract

Mathematical modeling and performance simulation results were shown for the solar thermal storage system which used heat pipe. The thermal storage system was composed of thermal storage tank and charging/discharging heat exchanger with one by the heat pipes. Heat pipe heat exchanger was attached to system, and could carry out charging and discharging to thermal storage tank at the same time. Height of the thermal storage tank was 600 mm, and that of the charging/discharging heat exchanger was 400 mm. Length of the heat pipe was the same as the total height of thermal storage system, and outer and inner diameter were 25.4 mm(O.D.) and 21.4 mm(I.D.) respectively. Diameter of the circular was 43 mm(O.D.), and fin geometries were considered as the design parameters. High temperature phase change material(PCM), $KNO_3$ and low temperature PCM, $LINO_3$ were charged to storage tank to adjust working temperature. Total size of thermal storage system able to get heat capacity more than 500 kW was calculated and the results were shown in this study. Number of heat pipe was required more than maximum 500, and total length of thermal storage system was calculated to the more than maximum 3 m at various condition.

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