Volume 30, Issue 1, July 2020, Pages 186–198
Chougui Mohamed Lamine1 and Zid Said2
1 Génie climatique, University of Constantine1, Génie climatique, Laboratory of génie climatique, Constantine, Constantine, Algeria
2 Génie climatique, University of Constantine1, Génie climatique, Laboratory of génie climatique, Constantine, Constantine, Algeria
Original language: English
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
In hot regions like the southern Algeria, a huge amount of energy is used for cooling. This study presents a methodology of exergy and energy analysis for ammonia-water and ammonia-lithium nitrate absorption cooling coupled to a double glazed flat plate collector. The thermal energy is stored in an insulated thermal storage tank. To compare total exergy loss and improve the coefficient of performance and exegetic efficiency for both solutions, the effects of heat exchanger efficiency, storage temperature, absorber, and condenser and evaporator temperature have been discussed in this study. Thermodynamic models have been developed using the first and second laws of thermodynamics. These models are employed in a computer program using FORTRAN to perform the calculations. Results indicate that ammonia-lithium nitrate cycles gives or even better performance than the ammonia-water cycle, Therefore, it’s suitable alternative to the ammonia-water cycle. Exergy analysis shows also that the total exergy loss in the system depends strongly on the working temperatures.
Author Keywords: Simulation, Performance, Optimization, Entropy, Enthalpy, Refrigeration.
Chougui Mohamed Lamine1 and Zid Said2
1 Génie climatique, University of Constantine1, Génie climatique, Laboratory of génie climatique, Constantine, Constantine, Algeria
2 Génie climatique, University of Constantine1, Génie climatique, Laboratory of génie climatique, Constantine, Constantine, Algeria
Original language: English
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
In hot regions like the southern Algeria, a huge amount of energy is used for cooling. This study presents a methodology of exergy and energy analysis for ammonia-water and ammonia-lithium nitrate absorption cooling coupled to a double glazed flat plate collector. The thermal energy is stored in an insulated thermal storage tank. To compare total exergy loss and improve the coefficient of performance and exegetic efficiency for both solutions, the effects of heat exchanger efficiency, storage temperature, absorber, and condenser and evaporator temperature have been discussed in this study. Thermodynamic models have been developed using the first and second laws of thermodynamics. These models are employed in a computer program using FORTRAN to perform the calculations. Results indicate that ammonia-lithium nitrate cycles gives or even better performance than the ammonia-water cycle, Therefore, it’s suitable alternative to the ammonia-water cycle. Exergy analysis shows also that the total exergy loss in the system depends strongly on the working temperatures.
Author Keywords: Simulation, Performance, Optimization, Entropy, Enthalpy, Refrigeration.
How to Cite this Article
Chougui Mohamed Lamine and Zid Said, “Exergy and energy analysis of solar absorption cooling system in hot regions with NH3-H2O and NH3-LiNO3 refrigerant solutions,” International Journal of Innovation and Applied Studies, vol. 30, no. 1, pp. 186–198, July 2020.
