Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Honeycomb and Laminated Mesh as Open Volumetric Solar Receiver : Performance of Heat Transfer and Pressure Drop

고온 태양열 공기식 흡수기의 충진재 변화에 따른 열전달 및 압력강하 성능 분석

  • Cho, Ja-Hyun (Dept. of Mechanical Eng., Graduate School, Inha University) ;
  • Lee, Ju-Han (Dept. of Mechanical Eng., Graduate School, Inha University) ;
  • Kang, Kyung-Mun (Dept. of Mechanical Eng., Graduate School, Inha University) ;
  • Seo, Tae-Beom (Dept. of Mechanical Eng., Inha University)
  • 조자현 (인하대학교 대학원 기계공학과) ;
  • 이주한 (인하대학교 대학원 기계공학과) ;
  • 강경문 (인하대학교 대학원 기계공학과) ;
  • 서태범 (인하대학교 기계공학과)
  • Published : 2008.11.10
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Abstract

The characteristics of heat transfer and pressure drop of several different porous materials which can be used as inserts inside solar volumetric air receivers were experimentally investigated. Generally, porous materials were inserted into solar volumetric air receivers to increase the thermal performance. In the present work, honeycomb (diameter: 100 mm, thickness: 30 mm), laminated mesh (diameter: 100 mm, thickness: 1 mm) are considered as the inserts for the experiment. The experimental apparatus consists mainly of a cylindrical ceramic duct as a receiver and an electric heater as an energy source. This system is an intake open loop, which used as air of working fluid. The temperatures inside the ceramic tube are measured by thermocouples, which are installed at each layer of the porous materials. The pressure-drop experimental apparatus is fabricated alike the above experimental equipment. An acrylic tube is used like as the ceramic tube, which has the same specifications of the ceramic tube. The pressure drop of porous materials inserted in the acrylic tube is measured between front and rear of those by transmitter. The results show that the laminated mesh surpasses the honeycomb of heat transfer and pressure drop increase as the porous material thickness and Reynolds number.

Keywords

References

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