Optimum operating temperature and efficiency of solar thermal power systems |
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| Institution: | 1. Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, USA;2. Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia;1. Institute for the Development of Energy for African Sustainability (IDEAS), University of South Africa, College of Science, Engineering and Technology, Johannesburg, South Africa;2. Science Campus, Corner of Christiaan De Wet and Pioneer Avenues, Johannesburg, South Africa;1. College of Agronomy and Biotechnology, China Agricultural University, 100193, Beijing, PR China;2. National Energy R&D Center for Biomass, China Agricultural University, 100193, Beijing, PR China;1. Department of Energy System Engineering, Faculty of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, Iran;2. Centre for Energy and Environmental Markets and School of Electrical Engineering and Telecommunications, The University of New South Wales, Sydney, Australia;3. Faculty of Built Environment, The University of New South Wales, Sydney, Australia;1. Room 325, Jubilee Building, Science Policy Research Unit (SPRU), University of Sussex, Brighton, BN1 9RH, UK;2. Room 389, Jubilee Building, Science Policy Research Unit (SPRU), University of Sussex, Brighton, BN1 9RH, UK |
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| Abstract: | In this paper, finite-time thermodynamics has been applied to solar heat engines in order to find the optimum operating temperature for solar thermal power systems. The percentage difference between optimum operating temperatures based on Curzon-Ahlborn (CA) efficiency and classical Carnot efficiency has been presented. This analysis has also been used to find the upper bound on efficiency for a wide range of the operating temperatures characterising various solar thermal power systems. |
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