Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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Thermal Performance of Solar Thermal System by On-Off Differential Temperature of Differential Temperature Controller

차온제어기의 On-Off 온도설정에 따른 태양열 시스템 열성능

  • Shin, U-Cheul (Dept. of Architectural Engineering, Daejeon University) ;
  • Baek, Nam-Choon (Korea Institute of Energy Research, Solar thermal Research Center)
  • 신우철 (대전대학교 건축학과) ;
  • 백남춘 (한국에너지기술연구원 태양열연구센터)
  • Published : 2005.06.30
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Abstract

On-off differential controller is one of the very important components which affect the system performance of the active solar thermal system. In this study, analyses were made regarding the influence of "on-off" setting temperature on the system efficiency and on the electrical consumption by circulation pump. This study was performed by experiment as well as the computer simulation using TRNSYS program. The simulation system was developed in this study was verified the its reliability by the experimental results. As a results, the turn off temperature(${\Delta}T_{off}$) is much more influence than the turn on temperature(${\Delta}T_{on}$) on the system efficiency. It is more clear and sensitivity in winter season. Finally the optimum on-off setting value and the system on-off pattern according to the several different kind of system was also represented.

Keywords

References

  1. Solar Engineering of Thermal Processes Duffie, J.A.;Beckman, W.A.
  2. TRNSYS 14.2 Reference manual University of Wisconsin-Maidison
  3. 國內 日射量 分析.評價 및 데이터 標準化 硏究 한국에너지 기술연구소
  4. 한국에너지 기술연구소, 國內日射量 分析.評價 및 데이터 標準化 硏究, 1998