A Numerical Study on the Thermal Performance of a Solar Air Heater Depending on the Hole Configuration and Geometry in the Absorber Plate

Title & Authors
A Numerical Study on the Thermal Performance of a Solar Air Heater Depending on the Hole Configuration and Geometry in the Absorber Plate
Shin, Jae Hyuk; Boo, Joon Hong;

Abstract
A series of numerical analyses was conducted to predict the thermal performance of a solar air heater depending on the hole configuration and geometry in the absorber plate. The planar dimensions of the prototype were 1 m (W) by 1.6 m (H), and the maximum air flow considered was $\small{187m^3/h}$. It was considered that protruding holes with a triangular opening in the absorber plate would invoke turbulence in the air flow to enhance the convection heat transfer. Six different hole configurations were investigated and compared with each other, while the hole opening height was considered as a design variable. Three-dimensional transient analyses were performed with a commercial software package on the airflow and heat transfer in the model. The numerical results were analyzed and compared from the view point of the outlet air temperature and its time response to derive the optimal hole pattern and hole opening height.
Keywords
Solar air heater;Numerical analysis;Hole pattern;Hole shape;Outlet air temperature;Transient operation;
Language
Korean
Cited by
1.
이중투과체 및 VIP복합 단열재 적용 평판 집열기의 성능 향상에 대한 연구,이두호;장한빈;김용학;도규형;이광섭;류남진;

설비공학논문집, 2016. vol.28. 11, pp.458-465
2.
흡열판에 돌출형 삼각 개구부가 설치된 가정용 태양열 공기가열기의 열성능에 대한 실험적 연구,김현곤;부준홍;

한국태양에너지학회 논문집, 2016. vol.36. 2, pp.41-51
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