Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experimental Study on the Heat Transfer Characteristics of a Grooved Heat Pipe for Solar Collector

그루브형 히트파이프를 갖는 이중진공관형 태양열 집열기의 열전달특성에 관한 실험적 연구

  • Kim, Byoung-Gi (School of Mechanical and aerospace Engineering, Graduate School, Gyeongsang Nat'l University) ;
  • Chung, Kyung-Taek (School of Mechanical and aerospace Engineering, Graduate School, Gyeongsang Nat'l University) ;
  • Jang, Hwan-Young (School of Mechanical and aerospace Engineering, Graduate School, Gyeongsang Nat'l University) ;
  • Suh, Jeon-Se (School of Mechanical and aerospace Engineering, Gyeongsang Nat'l University)
  • Published : 2006.06.21
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Abstract

This study investigated heat transfer characteristics between absorber and heat pipe used to extract heat from concentric evacuated tubular collectors. In order to experiment, T-type thermocouples are attached to a evaporator of heat pipe and absorber of inner tube. A wall temperature distribution of absorber and heat pipe were carried out by experimental method under actual various ir-radiance and outdoor conditions. As a result, As to increase an irradiance, a wall temperature of absorber and heat pipe is gradually increased. The heat pipe was required about 20min to obtain steady state operation after start up and operates stable during various irradiance conditions. And the collector efficiency was about $50{\sim}70%$ when a mass flow rate is about $1.3{\ell}/min$.

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