Flat plate collector utilizability for Guyana

• Autores: R. D. Hazel, L. P. Langevine
• Localización: Renewable energy, ISSN 0960-1481, Vol. 4, Nº 4, 1994, pág. 437
• Idioma: inglés
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• Resumen

  • The objective of this study was to analyse one year of hourly solar radiation data from Georgetown, Guyana, and derive a simplified tool in the form of a utilizability curve for designing solar thermal systems with fixed flatplate collectors. The significance of the utilizability curve is demonstrated with the solution of a typical design problem—the sizing of solar crop drying systems. For instance it is shown that an advanced flatplate collector [U/η0 = 3 W/m2°C and FR(τα) = 0.95 with Ac = 16 m2, delivers 29.6 MJ of energy per hour while heating ambient air from 30 to 50°C.