Journal
SOLAR ENERGY
Volume 85, Issue 1, Pages 38-45Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2010.11.007
Keywords
Solar refrigeration; Absorption systems; Ice production; Ammonia/lithium nitrate
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Funding
- PAPIIT-UNAM [IN110706-2]
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A novel solar intermittent refrigeration system for ice production developed in the Centro de Investigacion en Energia of the Universidad Nacional Autonoma de Mexico is presented. The system operates with the ammonia/lithium nitrate mixture. The system developed has a nominal capacity of 8 kg of ice/day. It consists of a cylindrical parabolic collector acting as generator-absorber. Evaporator temperatures as low as - 11 degrees C were obtained for several hours with solar coefficients of performance up to 0.08. It was found that the coefficient of performance increases with the increment of solar radiation and the solution concentration. A dependency of the coefficient of performance was not founded against the cooling water temperature. Also it was found that the maximum operating pressure increases meanwhile the generation temperature decreases with an increase of the solution concentration. (C) 2010 Elsevier Ltd. All rights reserved.
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