Transient simulation and parametric study of solar-assisted heating and cooling absorption systems: An energetic,economic and environmental (3E) assessment |
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| Affiliation: | 1. School of Mechanical and Manufacturing Engineering, The University of New South Wales (UNSW), Kensington, New South Wales 2052, Australia;2. Commonwealth Scientific and Industrial Research Organization (CSIRO) Energy Centre, Newcastle, New South Wales 2304, Australia;1. College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China;2. National Engineering Laboratory for Wheat and Corn Further Processing, Zhengzhou 450001, China;1. Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia;2. Faculty of Electronics and Computer Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia;1. School of Economics, Peking University, No. 5 Yiheyuan Road, Haidian District, Beijing 100871, PR China;2. School of Economics and Trade, Ningbo Institute of Technology, Zhejiang University, Ningbo, Zhejiang Province 315100, PR China;3. Zhejiang School of Administration, Hangzhou, Zhejiang Province 311121, PR China |
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| Abstract: | This paper presents energetic, economic, and environmental (3E) analyses of four configurations of solar heating and cooling (SHC) systems based on coupling evacuated tube collectors with a single-effect LiBr–H2O absorption chiller. In the first configuration (SHC1), a gas-fired heater is used as the back-up system, while a mechanical compression chiller is employed as the auxiliary cooling system in the second configuration (SHC2). The capacity of the absorption chiller is designed based on the maximum building cooling load in these configurations. The third and fourth configurations (SHC3 and SHC4) are similar to SHC2, but the absorption chiller size is reduced to 50% and 20%, respectively. The results show that the highest primary energy saving is achieved by SHC2, leading to a solar fraction of 71.8% and saving 54.51% primary energy as compared to a reference conventional HVAC system. The economic performance of all configurations is still unsatisfactory (without subsidies) due to their high capital costs. However, if a government subsidy of 50% is considered, the results suggest that SHC4 can be economically feasible, achieving a payback period of 4.1 years, net present value of 568,700 AUD and solar fraction of 43%, contributing to 27.16% decrease in the plant primary energy consumption. |
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| Keywords: | Solar thermal Absorption chiller Air-conditioning TRNSYS Economic Environmental |
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