Optical efficiency analysis of cylindrical cavity receiver with bottom surface convex |
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| Affiliation: | 1. College of Pipeline and Civil Engineering, China University of Petroleum (Huadong), 66, West Changjiang Street, Qingdao 266580, PR China;2. School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin 150001, PR China;1. Department of Mechanics of Biosystem Engineering, University of Mohaghegh Ardabili, Ardabil, Iran;2. Department of Renewable Energies, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran;3. Department of Mechanics of Biosystem Engineering, Tarbiat Modares University, Tehran, Iran;4. Department of Mechanical and Aeronautical Engineering, University of Pretoria, Pretoria, South Africa;1. Heat Transfer and Thermal Power Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, Tamilnadu 600036, India;2. Department of Mechanical Engineering, National Institute of Technology Puducherry, Karaikal, India;1. School of Energy and Power Engineering, HUST, Room 101 Power Building, Wuhan 430074, China;2. PROMES-CNRS Laboratory, 7 rue du Four Solaire, 66120 Font-Romeu-Odeillo-via, France;3. China-EU Institute for Clean and Renewable Energy, HUST, Wuhan, China;1. Department of Mechanics of Biosystem Engineering, University of Mohaghegh Ardabili, Ardabil, Iran;2. Department of Renewable Energies, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran;3. Department of Mechanics of Biosystem Engineering, Tarbiat Modares University, Tehran, Iran;1. The University of Birmingham, School of Engineering, Edgbaston, Birmingham, B15-2TT, UK;2. The University of Mosul, Mech. Eng. Dept., Iraq |
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| Abstract: | The bottom surface of conventional cavity receiver cannot be fully covered by coiled metal tube during fabrication, which would induce a dead space of solar energy absorption. The dead space of solar energy absorption can severely decrease the optical efficiency of cavity receiver. Two new types of cavity receiver with bottom surface convex are put forward with the objective to solve the problem of dead space of solar energy absorption and improve the optical efficiency of cavity receiver. The optical efficiency and heat flux distribution of the two new types of cavity receiver are analyzed by Monte Carlo ray tracing method. Besides, the optical efficiency comparisons between conventional cavity receiver and the two new types of cavity receiver are conducted at different characteristic parameter conditions. |
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