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Título del libro: Proceedings Of The Solar World Congress 2005: Bringing Water To The World, Including Proceedings Of 34th Ases Annual Conference And Proceedings Of 30th National Passive Solar Conference
Título del capítulo: Influence of the mass flow rate on the conical receiver thermal efficiency of a point focus concentrator with an aperture angle of 90°

Autores UNAM:
ARMANDO ROJAS MORIN; CLAUDIO ALEJANDRO ESTRADA GASCA;

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Autores externos:

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Idioma:

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Año de publicación:
2005

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Palabras clave:

Aperture angle; Diverse applications; Industrial processs; Mass flow rate; Normal flow; Parabolic concentrators; Thermal efficiency; Volumetric flow; Aluminum; Experiments; Parabolic antennas; Concentration (process)

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Resumen:

In this work the thermal experimentation carried out in a conical receiver of a solar paraboidal concentrator is described. The aluminum solar parabolic concentrator comes from a parabolic antenna which originally was used for telecommunication purposes and it has an aperture angle of 90°. In this new experimentation the direction of the flow that crosses the receiver has been inversed (fig, 1) and the volumetric flow that crosses the receiver (7, 6, 5, 4, 3, 2 and 1 [l/min]) is varied. The experimental data of the temperatures of the surface of the receiver are shown in this work, also the temperatures in the entrance and in the exit of the flow. The experimental data is used to calculate the heat absorbed by the receiver, the useful heat, the heat losses and the thermal efficiency in the receiver and in the concentrator-receiver system, thus comparing the results with those obtained in previous experimentations where the direction of the flow was not inversed. The thermal efficiency of the concentrator-receiver system for the volumetric flows mentioned before, for normal flow are from 85.71% (7 l/min) to 50.55% (1 l/min) and for the inverse flow, from 80.83% (7 l/min) to 42.58% (1 l/min). Therefore it is better to work with normal flow for diverse applications, for example for heating fluids for industrial processes.

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Entidades citadas de la UNAM:

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Fuente:


ISBN:
9781622762637
Editorial:

Tipo de producto:
Conference Paper