Study on the Heat Transfer into by Space by the Aspect Ratio of Solar Concentration Absorber.

태양열 집광 흡수기내의 종횡비가 공간내의 열전달에 미치는 영향

  • 이용훈 (경상대학교 대학원) ;
  • 이중섭 (경상대학교 대학원) ;
  • 배강열 (경상대학교 대학원) ;
  • 정효민 (경상대학교 수송기계공학부.해양산업연구소) ;
  • 정한식 (경상대학교 수송기계공학부.해양산업연구소)
  • Published : 2001.11.01

Abstract

This paper showed the study on the heat transfer into space by the aspect ratio of solar concentration absorber, and the purpose of this study is to obtain the optimum aspect ratio and tilt angle. The boundary conditions of a numerical model were assumed as follows : (1) The heat source is located at the center of absorber. (2) The bottom was is opened and adiabatic. (3) The top, right and left walls are cooled wall. The parameters for the study are the tilt angles and the aspect ratio. The velocity vectors and isotherms were dense at wall side and the heat source. The mean Nusselt number had a maximum value at Ar=1:1 and $\theta=0^{\circ}$ and showed a low value as the tilt angles were increased.

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