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THERMAL RESISTANCE OF A SOLAR-ENERGY COLLECTOR ABSORBER UNDER A NON-UNIFORM FLUX DISTRIBUTION.

Author(s) : PRAPAS D. E., NORTON B., PROBERT S. D.

Type of article: Article

Summary

A GENERALIZED METHOD FOR DETERMINING THERMAL RESISTANCES OF MEDIA EXPERIENCING NON-UNIFORM FLUX DISTRIBUTIONSHAS BEEN EVOLVED. THE METHOD WAS APPLIED TO THE ANALYSIS OF HEAT TRANSFERS IN A FINNED TUBE, EMPLOYED AS AN ABSORBER IN A SOLAR-ENERGY COLLECTOR. THE PRESENT STUDY DEMONSTRATES THAT, UNDER NON-UNIFORM FLUX DISTRIBUTION, THE VALUES OF THERMAL RESISTANCES PREDICTED WHEN ASSUMING A UNIFORM FLUX DISTRIBUTION ARE GENERALLY LOWER THAN ACTUAL VALUES ENCOUNTERED. HOWEVER, FOR A FINNED-TUBE ABSORBER IN A SOLAR-ENERGY COLLECTOR, THIS IS COMPENSATED BY THE COUNTERACTING EFFECT OF THE DISTRIBUTED NATURE OF THE DEVICE, WHICH RESULTS IN AN AXIAL VARIATION OF TEMPERATURE.

Details

  • Original title: THERMAL RESISTANCE OF A SOLAR-ENERGY COLLECTOR ABSORBER UNDER A NON-UNIFORM FLUX DISTRIBUTION.
  • Record ID : 1988-2503
  • Languages: English
  • Subject: General information
  • Source: International Journal of Heat and Mass Transfer - vol. 31 - n. 5
  • Publication date: 1988

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