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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

COMBINED RADIATION-CONVECTION-CONDUCTION HEAT TRANSFER IN TRANSPARENT INSULATION

Get access (open in a dialog) DOI: 10.1615/IHTC10.700
pages 319-324

Аннотация

A general theoretical method was developed to describe the heat transfer characteristics of transparent insulation made of capillary tubes in honeycomb structure. The mathematical model is based on a heat transfer analysis including radiation (separated into short-and long-wave spectra), conduction and mixed forced and natural convection. An iterative numerical procedure was prepared to solve the non-linear conservation equations for obtaining the temperature field. An application to solar air heater is presented here. The effects of optical properties, geometry and operating conditions on the collector performance (efficiency and outlet temperature) are discussed and compared to our recent experimental results.