Thermodynamic design and assessment of hybrid double absorption solar cooling systems |
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| Institution: | 1. Centre of Energy Studies, Indian Institute of Technology, New Delhi-110016, India;2. Department of Agricultural Engineering, Haryana Agricultural University (HAU), Hissar-125004, India;1. Mechanical Engineering Department, Faculty of Engineering and Architecture, American University of Beirut, P.O. Box 11-0236, Beirut 1107-2020, Lebanon;2. ARMINES Mines Paristech, PSL Research University, CES – Centre d’efficacité énergétique des systems, Z.I. Les Glaizes – 5 rue Léon Blum, 91120 Palaiseau, France;3. Politecnico Di Torino, DENERG – Energy Department, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;1. School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China;2. School of Civil Engineering, University of South China, Hengyang, 421001, China;3. Gree Electric Appliances, Inc. of Zhuhai, 519070, China;4. College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, China |
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| Abstract: | This communication presents an investigation of the thermodynamic design and feasibility assessment of hybrid double-absorption solar cooling systems. The systems considered are conventional closed-cycle and open-cycle absorption systems with an additional open-absorber component through which the process room air is passed, cooled and dehumidified. The cooling produced in the evaporator is utilized to remove heat from the open absorber as well as the process air being circulated. Thermodynamic modelling of system components for a fixed set of operating conditions and with water-LiBr as working fluid have been carried out and the system COP predicted as a function of regenerator temperature, mass flow ratio and latent heat load in the process air and the ambient air. A comparative study of the open and closed cycle options has been made and detailed parametric results are presented. It is concluded that the hybrid double-absorption solar cooling systems are better in performance than conventional systems and an open-cycle double-absorption system is even more attractive and cost effective as compared to closed-cycle option. |
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