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An Energy Production System Powered by solar Heat with Biogas Dry Reforming Reactor and Solid Oxide Fuel Cell

Smart Grid and Renewable Energy 2023年第5期14卷 85-106页

作者： Akira Nishimura Ryotaro Sato Eric Hu Division of Mechanical Engineering Graduate School of Engineering Mie University Tsu Japan School of Electrical Mechanical Engineering The University of Adelaide Adelaide Australia

In this paper, an energy system consisting of solar collector, biogas dry reforming reactor and solid oxide fuel cell (SOFC) has been proposed. The heat produced from the concentrating solar collector is used to drive a biogas dry reforming reactor in order to produce H2 as a fuel for SOFC, in such as system. The aim of this study is to clarify the impact of climate data on the performance of solar collector with various sizes/designs. The temperature of heat transfer fluid produced by the solar collector is calculated by adopting the climate data for Nagoya city in Japan in 2021. The amount of H2 produced from the biogas dry reforming reactor and the power generated by SOFC were simulated. The results show the temperature of heat transfer fluid (Tfb) and Tfb ratio (a) based on the length of absorber (dx) = 1 m have a peak near the noon following the trend of solar intensity (I). Results also revealed that a increases with increase in dx. It is found that the differences of Tfb and a between dx = 2 m and dx = 3 m are larger than those between dx = 1 m and dx = 2 m. It is revealed that Tfb and a are higher in spring and summer. dx = 4 m is the optimum length of solar absorber. The amount of H2 produced from the biogas dry reforming reactor as well as the power generated by SOFC is the highest in August, resulting that it is prefer to produce H2 and to generate SOFC in summer.

关键词： solar collector Fluid Temperature Climate Data Biogas Dry Reforming H2 Production SOFC

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Performance Investigation of the solar Chimney Power Plants Heater Case Study in Aswan, Egypt

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Journal of Power and Energy Engineering 2016年第10期4卷 39-60页

作者： Magdy Bassily Hanna Tarek Abdel-Malak Mekhail Omar Mohamed Dahab Mohamed Fathy Cidek Esmail Ahmed Rekaby Abdel-Rahman Mechanical Power and Energy Department Faculty of Engineering Minia University Minia Egypt Mechanical Power Department Faculty of Energy Engineering Aswan University Aswan Egypt Mechanical Power Department Faculty of Engineering Aswan University Aswan Egypt

solar collector is a thermal device that uses the heated air in the power generation and many engineering applications. The purpose of the present work is to study the performance and temperature distribution for the solar collector which uses heated air in solar chimney power generation that it consist of three parts, a turbine-generator unit which is used in the generation of electric energy, and cylindrical chimney is fixed vertically and finally a solar collector under the climatic conditions of Egypt-Aswan is studied. This site is specified as the hottest site because the nearest of this location from the Tropic of cancer. Experiments are performed in ten summer days of May and June 2015 with different solar radiations and clarity of the sky. Hourly values of global solar radiation and some meteorological data (temperature, pressure, velocity, etc.) for measuring days are obtained by measuring devices. Inlet and outlet temperatures of air from a solar collector and velocity at junction region. In this work, attempt has been made to present the effect of environmental factors such as ambient temperature, the clarity of the sky and solar radiation on the performance of solar collector. The temperature of the base and the cover of the solar collector, the variation of solar radiation, solar collector efficiency, heat transfer coefficient, the velocity at the junction region between the chimney base, the outlet of the solar collector and temperature distribution along the air heater are discussed. A prediction for the results of the solar collector were performed by using developed theoretical model was made by this study which is based on the previous works. The numerical study has used a commercial code CFX, ANSYS 16.1 to simulate the flow through the collector. The study show that the outlet air temperatures from the solar collector and the velocity at the junction are depending on the climate condition such as ambient temperature and solar radiation, the differ

关键词： solar Chimney solar collector Natural Convection Computational Fluid Dynamic

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Performance of Water in Glass Evacuated Tube solar Water Heater under Kenya Climatic Condition

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Computational Water, Energy, and Environmental Engineering 2021年第2期10卷 37-48页

作者： Ernest Kyekyere Hiram Ndiritu Meshack Hawi Polline Mwambe Department of Mechanical Engineering Pan African University Institute for Basic Sciences Technology and Innovation Nairobi Kenya Department of Mechanical Engineering Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya

solar water heaters which provide a cost-effective and environmental friendly approach to hot water generation are in widespread application. Evacuated tube solar water heaters perform better than flat plate solar water heaters as a result of their greater surface area exposed for sunlight absorption. Water-in-glass evacuated tube solar water heaters are widely used as compared to heat-pipe solar water heaters due to their short payback periods. In this study, the performance of water-in-glass evacuated tube solar water heater is investigated through experiments under the climatic conditions in Kenya. The results revealed a daily efficiency range of 0.58 - 0.65 and a daily final outlet temperature greater than 55°C given an initial temperature of 25°C.

关键词： solar Water Heater Water-in-Glass Evacuated Tube solar collector solar Irradiation

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大面积模块式太阳能集热器的研究

大面积模块式太阳能集热器的研究

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作者：曾宪阳河南农业大学

学位级别：硕士

Water heater system of large-area and modular solar collector is the direction of the solar thermal utilizations. Modular solar collector of the solar water heater system was studied and analysed in this dissertation. The flat plate collector which consists of steel-cored plastic as frame and double glazing as cover plate was improved and tested. It shows that the solar water heater has more average daily efficiency through these measures. Next, the shortcomings of flat plate collector and evacuated solar collector were analysed. A new evacuated solar collector tube was developed, which is mainly made of stainless steel tube and borosilicate glass tube. The primitive technological process of the glass-metal mechanical seal between them was discussed and the unmatched seal was completed successfully. At last, the design of the water heater system of large-area and modular solar collector was given including modular collectors and the frames of the system, and the efficiency of different link modes of the modular collectors were analysed. It provides a basis for the design of water heater system for new and comfortable houses, and valuable exploration for the construction integrated solar water heater was made.

关键词： solar collector solar water heater system glass-metal seal modular

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Simulation,Validation and Economic Analysis of solar Powered Organic Rankine Cycle for Electricity Generation

Simulation,Validation and Economic Analysis of Solar Powered...

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作者： Suresh Baral Kyung Chun Kim School of Mechanical Engineering Pusan National University

This paper presents the efficiencies such as exergy,thermal,solar power cycle efficiency,along with solar heat input and area of the solar collector for 4 selected working *** modeling was carried out using a commercial scroll expander,two compact heat exchangers,a diaphragm pump and a solar *** commercial software Engineering Equation Solver(EES) was used for calculating the parameters of various working *** analyzed working fluids have been recommended for solar ***,the economic analysis of solar powered ORC system has been carried out with the solar collector cost and the overall ORC cost of each working fluid in the *** the payback period has been calculated and was around 3.7 years.

关键词： Economic analysis organic Rankine cycle solar collector thermal efficiency

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