A New Aspect in Analysis and Improvement of Standalone Solar-Driven Absorption Refrigeration Systems
DOI:
https://doi.org/10.46604/emsi.2024.13833Keywords:
solar refrigeration, ammonia-water system, off-design conditions, absorption refrigeration, solar energyAbstract
Solar-driven absorption refrigeration systems (ARSs) are subjected to work under off-design conditions due to the driving temperature variation. In this study, a model of NH3/H2O ARS with 100-kW cooling capacity has been developed. Energetic and exergetic coefficients of performance (COP, ECOP), besides cooling production (Qeva), have been investigated at off-design conditions. The analysis indicates a reduction in the effectiveness of the generator and solution heat exchanger (SHX) under such conditions. A new method to improve the off-design system’s performance by modifying the generator and SHX heat capacities is suggested. Results revealed that an increase in heat capacities of the generator and SHX (UAgen, UASHX) effectively improves the system’s performance. Raising the values of UAgen and UASHX by 20% maintains the system’s COP, ECOP, and Qeva near their designed values under a wider range of driving temperatures (100 oC to 92 oC). Moreover, this adjustment helps decrease the system’s cut-in/off temperature.
References
D. Vérez, E. Borri, and L. F. Cabeza, “Trends in Research on Energy Efficiency in Appliances and Correlations with Energy Policies,” Energies, vol. 15, no. 9, article no. 3047, 2022.
O. W. Mohammed and G. Yanling, “Comprehensive Parametric Study of a Solar Absorption Refrigeration System to Lower Its Cut In/Off Temperature,” Energies, vol. 10, no.11, article no. 1746, 2017.
I. Karakurt and G. Aydin, “Development of Regression Models to Forecast the CO2 Emissions from Fossil Fuels in the BRICS and MINT Countries,” Energy, vol. 263, part A, article no. 125650, 2023.
V. Mishra, U. Bhatia, and A. D. Tiwari, “Bias-Corrected Climate Projections for South Asia from Coupled Model Intercomparison Project-6,” Scientific Data, vol. 7, article no. 338, 2020.
Y. A. M. Ahmed, O. W. Mohammed, O. M. E. S. Khayal, and E. B. Elagab, “Absorption Cooling System Utlizing Diesel Engine Exhaust Heat,” International Journal of Engineering Applied Sciences and Technology, vol. 7, no. 6, pp. 74-95, 2022.
J. Aman, D. S. K. Ting, and P. Henshaw, “Residential Solar Air Conditioning: Energy and Exergy Analyses of an Ammonia-Water Absorption Cooling System,” Applied Thermal Engineering, vol. 62, no. 2, pp. 424-432, 2014.
O. W. Mohammed and G. Yanling, “Yearly Energetic and Exergetic Performance of Solar Absorption Refrigeration System in the Region of Northern Sudan,” International Energy Journal, vol. 17, no. 3, pp. 141-154, 2017.
M. Mohammed and T. J. Mourad, “Development of Solar Desalination Units Using Solar Concentrators or/and Internal Reflectors,” International Journal of Engineering and Technology Innovation, vol. 12, no. 1, pp. 45-61, 2022.
O. W. Mohammed and F. A. Elmahi, “Prediction of Global Solar Radiation across the Region of Northern Sudan,” Journal of Karary University for Engineering and Science, vol. 3, no. 1, pp. 1-13, 2024.
E. Bellos, I. Chatzovoulos, and C. Tzivanidis, “Yearly Investigation of a Solar-Driven Absorption Refrigeration System with Ammonia-Water Absorption Pair,” Thermal Science and Engineering Progress, vol. 23, article no. 100885, 2021.
G. Volpato, S. Rech, A. Lazzaretto, T. C. Roumpedakis, S. Karellas, and C. A. Frangopoulos, “Conceptual Development and Optimization of the Main Absorption Systems Configurations,” Renewable Energy, vol. 182, pp. 685-701, 2022.
G. Leonzio, “Solar Systems Integrated with Absorption Heat Pumps and Thermal Energy Storages: State of Art,” Renewable and Sustainable Energy Reviews, vol. 70, pp. 492-505, 2017.
V. Jain, A. Singhal, G. Sachdeva, and S. S. Kachhwaha, “Advanced Exergy Analysis and Risk Estimation of Novel NH3-H2O and H2O-LiBr Integrated Vapor Absorption Refrigeration System,” Energy Conversion and Management, vol. 224, article no. 113348, 2020.
K. E. Herold, R. Radermacher, and S. A. Klein, Absorption Chillers and Heat Pumps, 2nd ed., Florida: CRC Press, 2016.
A. Aliane, S. Abboudi, C. Seladji, and B. Guendouz, “An Illustrated Review on Solar Absorption Cooling Experimental Studies,” Renewable and Sustainable Energy Reviews, vol. 65, pp. 443-458, 2016.
T. S. Ge, R. Z. Wang, Z. Y. Xu, Q. W. Pan, S. Du, and X. M. Chen, et al., “Solar Heating and Cooling: Present and Future Development,” Renewable Energy, vol. 126, pp. 1126-1140, 2018.
A. Z. Mendiburu, J. J. Roberts, L. J. Rodrigues, and S. K. Verma, “Thermodynamic Modelling for Absorption Refrigeration Cycles Powered by Solar Energy and a Case Study for Porto Alegre, Brazil,” Energy, vol. 266, article no. 126457, 2023.
B. H. Gebreslassie, M. Medrano, F. Mendes, and D. Boer, “Optimum Heat Exchanger Area Estimation Using Coefficients of Structural Bonds: Application to an Absorption Chiller,” International Journal of Refrigeration, vol. 33, no. 3, pp. 529-537, 2010.
A. Bangotra and A. Mahajan, “Design Analysis Of 3 TR Aqua Ammoniavapour Absorption Refrigeration System,” International Journal of Engineering Research and Technology, vol. 1, no. 8, pp. 1-6, 2012.
R. S. Lavanya and B. Murthy, “Design of Solar Water Cooler Using Aqua-Ammonia Absorption Refrigeration System,” International Journal of Advanced Engineering Research and Studies, vol. 2, no. 2, pp. 20-24, 2013.
U. Jakob, K. Spiegel, and W. Pink, “Development and Experimental Investigation of a Novel 10 KW Ammonia/Water Absorption Chiller,” Proceedings of the 9th International IEA Heat Pump Conference, pp. 1-8, 2008.
O. W. Mohammed and G. Yanling, “Estimation of Diffuse Solar Radiation in the Region of Northern Sudan,” International Energy Journal, vol. 16, no. 4, pp. 163-172, 2016.
J. A. Duffie, W. A. Beckman, and N. Blair, Solar Engineering of Thermal Processes, Photovoltaics and Wind, New York: John Wiley & Sons, 2020.
N. I. Ibrahim, M. M. A. Khan, I. M. Mahbubul, R. Saidur, and F. A. Al-Sulaiman, “Experimental Testing of the Performance of a Solar Absorption Cooling System Assisted with Ice-Storage for an Office Space,” Energy Conversion and Management, vol. 148, pp. 1399-1408, 2017.
J. Fernandez-Seara and M. Vazquez, “Study and Control of the Optimal Generation Temperature in NH3-H2O Absorption Refrigeration Systems,” Applied Thermal Engineering, vol. 21, no. 3, pp. 343-357, 2001.
P. Colonna and S. Gabrielli, “Industrial Trigeneration Using Ammonia-Water Absorption Refrigeration Systems (AAR),” Applied Thermal Engineering, vol. 23, no. 4, pp. 381-396, 2003.
F. Táboas, M. Bourouis, and M. Vallès, “Analysis of Ammonia/Water and Ammonia/Salt Mixture Absorption Cycles for Refrigeration Purposes in Fishing Ships,” Applied Thermal Engineering, vol. 66, no. 1-2, pp. 603-611, 2014.
Published
How to Cite
Issue
Section
License
Copyright (c) 2024 Osman Wageiallah Mohammed, Fathelrahman Ahmed Elmahi
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright Notice
Submission of a manuscript implies: that the work described has not been published before that it is not under consideration for publication elsewhere; that if and when the manuscript is accepted for publication. Authors can retain copyright in their articles with no restrictions. Also, author can post the final, peer-reviewed manuscript version (postprint) to any repository or website.
Since Sep. 01, 2023, EMSI will publish new articles with Creative Commons Attribution Non-Commercial License, under Creative Commons Attribution Non-Commercial 4.0 International (CC BY-NC 4.0) License.
The Creative Commons Attribution Non-Commercial (CC-BY-NC) License permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
