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TECHNICAL BRIEFS

A Numerical and Experimental Investigation of Low-conductivity Unglazed, Transpired Solar Air Heaters

[+] Author and Article Information
Keith Gawlik, Craig Christensen, Charles Kutscher

J. Sol. Energy Eng 127(1), 153-155 (Feb 07, 2005) (3 pages) doi:10.1115/1.1823494 History: Received July 02, 2003; Revised July 07, 2004; Online February 07, 2005
Copyright © 2005 by ASME
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References

Hubbell, R. H., and Cain, C. L., 1988, “New Heat Transfer and Friction Factor Design Data for Perforated Plate Heat Exhchangers,” Advances in Cryogenic Engineering, Plenum Co., New York, Vol. 33 , pp. 383–390.
Sparrow,  E. M., and Ortiz Carranc,  M., 1982, “Heat Transfer Coefficients for the Upstream Face of a Perforated Plate Positioned Normal to an Oncoming Flow,” Int. J. Heat Mass Transfer, 25(1), pp. 127–135.
Andrews, G. E., Bazdidi-Tehrani, F., Hussain, C. I., and Pearson, J. P., 1991, “Small Diameter Film Cooling Hole Heat Transfer: The Influence of the Hole Length,” ASME paper no. 91-GT-344, presented at ASME International Gas Turbine and Aeroengine Congress and Exposition, 3–6 June, Orlando, FL.
Rhee,  S. J., and Edwards,  D. K., 1983, “Comparison of Test Results for Flat-Plate, Transpired Flat-Plate, Corrugated, and Transpired Corrugated Solar Air Heaters,” J. Sol. Energy Eng., 105, pp. 231–236.
Wu,  C. H., Mantell,  S. C., and Davidson,  J., 2004, “Polymers for solar domestic hot water: Long-term performance of PB and nylon 6,6 tubing in hot water,” J. Sol. Energy Eng., 126(1), pp. 581–586.
Kutscher, C. F., 1992, “An Investigation of Heat Transfer for Air Flow Through Low Porosity Perforated Plates,” Ph.D. thesis, University of Colorado at Boulder, Boulder, CL.
Van Decker,  G. W. E., Hollands,  K. G. T., and Brunger,  A. P., 2001, “Heat-Exchange Relations for Unglazed Transpired Solar Collectors with Circular Holes on a Square or Triangular Pitch,” Sol. Energy, 71(1), pp. 33–45.
Gawlik, K. M., 1995, “A Numerical and Experimental Investigation of Heat Transfer Issues in the Practical Utilization of Unglazed, Transpired Solar Air Heaters,” Ph.D. thesis, University of Colorado at Boulder, Boulder, CO.
Christensen, C. B., Kutscher, C. F., and Gawlik, K. M., 1997, “Unglazed Transpired Solar Collector Having a Low Thermal-Conductance Absorber,” U.S. patent 5,692,491.

Figures

Grahic Jump Location
Typical unglazed transpired collector installation for building ventilation air preheat applications 6.
Grahic Jump Location
Factorial analysis numerical results. Subscripts in plot area refer to mass flux (kg/s-m2).
Grahic Jump Location
Collector efficiency over a wide-range of conductances at a mass flux of 0.02 kg/s-m2,

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