Browse > Article

Honeycomb and Laminated Mesh as Open Volumetric Solar Receiver : Performance of Heat Transfer and Pressure Drop  

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)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.20, no.11, 2008 , pp. 760-766 More about this Journal
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
Solar tower; Volumetric air receiver; Honeycomb; Laminated mesh;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Fend, T., Pitz-Paal, R., Reutter, O., Bauer, J. and Hoffschmidt, B., 2004, Two novel highporosity matreials as volumetric receivers for concentrated solar radiation, Solar Energy Materials and Solar Cells, Vol. 84, No. 1-4, pp. 291-304   DOI   ScienceOn
2 Buck, R., Barth, C., Eck. M. and Steinmann, W. D., 2004, Dual receiver concept for solar towers, Solar Energy, Vol. 80, No. 10, pp. 1249-1254   DOI   ScienceOn
3 Fend, T., Hoffschmidt, B., Pitz-Paal, R., Reutter, O. and Riebrock, P., 2004, Porous materials as open volumetric solar receivers: Experimental determination of thermophysical and heat transfer properties, Energy, Vol. 29, No. 5-6, pp. 823-833   DOI   ScienceOn
4 European Commission, 2007, European Research on Concentrated Solar Thermal Energy, Community research, pp. 26-39
5 Modest, M. F., 1993, Radiative heat transfer, Mcgraw-Hill, NewYork, pp. 790-800
6 Sandia National Laboratories, 1990, 10 MW Solar Two Experimental Solar Facility, Five miles E of Barstow, in Daggett
7 Lu, W., Zhao, C. Y. and Tassou, S. A., 2006, Thermal analysis on metal-foam filled heat exchangers Part I : Metal-foam filled pipes, International Journal of Heat and Mass Transfer, Vol. 49, No. 15-16, pp. 2751-2761   DOI   ScienceOn