Conference article

Development of a Solar Intermittent Refrigeration System for Ice Production

G. Moreno-Quintanar
Centro de Investigación en Energía, Universidad Nacional Autónoma de Måxico, Mexicoo

W. Rivera
Centro de Investigación en Energía, Universidad Nacional Autónoma de Måxico, Mexicoo

R. Best
Centro de Investigación en Energía, Universidad Nacional Autónoma de Måxico, Mexicoo

Download articlehttp://dx.doi.org/10.3384/ecp110574033

Published in: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:48, p. 4033-4040

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Published: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

A solar powered intermittent absorption refrigeration system has been developed at the Centro de Investigación en Energía of the Universidad Nacional Autónoma de México. The system was evaluated with the ammonia/lithium nitrate/water (NH3/LiNO3/H2O) mixture. The system was designed to produce up to 8 kg/day of ice. The system consists of a Compound Parabolic Concentrator (CPC) with a cylindrical receiver acting as the generator/absorber; a condenser; an evaporator and an expansion valve. The system operates exclusively with solar energy and no moving parts are required. Evaporator temperatures as low as - 11°C were obtained for a period of time up to 8 hours. Coefficients of performance as high as 0.098 were obtained. These coefficients were 24% higher than those obtained with the same system operating with the binary ammonia/lithium nitrate (NH3/LiNO3) mixture previously reported in the literature. The results showed that the developed system seems to be a good alternative for refrigeration in zones where electricity is not available.

Keywords

Solar cooling; absorption systems; ice production; ammonia/lithium nitrate/water

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