Modeling and design procedure for LiBr-water absorption air-conditioning by solar energy
DOI:
https://doi.org/10.31663/utjes.15.1.698Keywords:
Lithium Bromide–Water, Solar-Powered Cooling, Thermodynamic Analysis, Refrigeration Cycle, Heat Exchanger Design, Sustainable Cooling SystemsAbstract
The aim of this study is to design a lithium bromide-water (LiBr-H2O) absorption cooling system with a rated capacity of about 1 kW of solar-powered cooling using lithium bromide as an adsorbent and water as a refrigerant. The proposed absorption cooling system consists of a rooftop evacuated tube solar collector, a LiBr-H2O single-effect absorption chiller (including a generator, a solution heat exchanger, an evaporator, a condenser, and an absorber), a fan coil unit, pumps, a flow choke, and control valves. All the governing thermal equations of the system were studied theoretically, and the system was designed according to the following assumptions (system capacity 1 kW, generator temperature 85 , condenser temperature 38 , evaporator temperature 5 , and absorber temperature 37 . To find out how different operational and design factors affect the thermal efficiency, a thermodynamic analysis of the absorption cooling cycle was performed. The dimensions of the components and the cooling capacity were explored in the results.
References
Aljuhani, Y., & Dayem, A. M. A. (2022). Thermal analysis of a solar-powered absorption air-conditioning system: Case study for a tent in Mina zone, Saudi Arabia. Cleaner Engineering and Technology, 8, 100472. https://doi.org/10.1016/j.clet.2022.100472
Ameer, A. S. (2016). Experimental and Theoretical Study of Absorption Cooling System Integrated with Solar Concentrated Collector. PhD Dissertation.
Ataa, A. B., & Ammarib, H. (n.d.). Simulation of a LiBr-Water Absorption Refrigeration System Powered by Evacuated Tubes Solar Collector.
Dalichaouch, M. (1989). A theoretical and experimental investigation of an absorption refrigeration system for application with solar energy units. Newcastle University.
Eicker, U., & Pietruschka, D. (2009). Design and performance of solar powered absorption cooling systems in office buildings. Energy and Buildings, 41(1), 81–91. https://doi.org/10.1016/j.enbuild.2008.07.015
Ketfi, O., Merzouk, M., Merzouk, N. K., & Metenani, S. El. (2015). Performance of a Single Effect Solar Absorption Cooling System (Libr-H2O). Energy Procedia, 74, 130–138. https://doi.org/10.1016/j.egypro.2015.07.534
Klein, S. A., & Alvarado, F. L. (2004). Engineering Equation Solver (EES) Software. Department of Mechanical Engineering, University of Wisconsin—Madison.
Narayanan, R., Harilal, G. K., & Golder, S. (2021). Feasibility study on the solar absorption cooling system for a residential complex in the Australian subtropical region. Case Studies in Thermal Engineering, 27, 101202. https://doi.org/10.1016/j.csite.2021.101202
Osman, E. A., & Abdalla, K. N. (2016). Design and Construction of an Absorption Cooling System Driven by Solar Energy. University Of Khartoum Engineering Journal, 6(ENGINEERING).
Sahoo, K. C., & Das, S. N. (2014). Theoretical design of adiabatic capillary tube of a domestic refrigerator using refrigerant R-600a. American Journal of Engineering Research, 3(05), 306–314.
William, B. J., Selvaraj, A., Rammurthy, M. S., Rajaraman, M., & Srinivasa Chandra, V. (2017, March 28). A Study on Implementation of Vapour Absorption Air Conditioning System (VAAcS) Using LiBr-H 2 O in Commercial vehicles. https://doi.org/10.4271/2017-01-0181
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