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Modeling Solar Hydrogen Fuel Cell System for Residential Application

Sayedin, Farid | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41636 (46)
  4. University: Sharif University of Technology
  5. Department: Energy Engineering
  6. Advisor(s): Roshandel, Ramin
  7. Abstract:
  8. The gradual exhaustion of oil and gas resources and the various problems involved in their pollution makes it necessary to promote a renewable energy system. One of the most interesting developments of standalone systems based on the utilization of hydrogen is solar hydrogen system. Central and southern Iran exhibit an excellent solar climate which makes them ideal places for solar hydrogen systems. The economy of Iran is based on oil and it has one of the largest reserves of oil and gas in the world but the reserves would not be enough to meet the domestic and export markets starting in three to four decades. Moreover, elimination of energy subsidies in Iran, will led to more tendencies to apply renewable energy technologies. The aim of this paper is the design and analysis of solar hydrogen system serving the electricity needs, during a complete year of operation, of an isolated residential building situated in a selected site (Tehran, Iran). The system consists of a photovoltaic array, electrolyzer, hydrogen metal hydride tank, fuel cell, and battery. Modeling the system, it is possible to perform parametric studies to find possible system configurations for different climates and loads. To study the behavior of such a system, a complete model is developed by integrating the individual sub models. The system performance is significantly determined by the energy management strategies for the solar hydrogen systems. The strategies have been assessed on their capacity to meet the electrical energy demand through effective utilization of the electrolyzer, fuel cell and batteries. The dynamic model is developed and applied based on the mathematical and electrical equations developed for the proposed system. The Reference Energy System (RES) is also presented based on the modeling results and it was found that the overall energy efficiency values of the system fluctuate between 6.3% and 15.4% depends on different strategies and applied routs. Results indicate that the solar hydrogen system can bring about complete grid independence and show that the models described in this paper can be used to predict the performance of a solar hydrogen system for any reasonable scenario. This model is also useful for building efficient peak power control
  9. Keywords:
  10. Proton Exchange Membrane (PEM)Fuel Cell ; Electrolyzer ; Energy Management ; Photovoltaic Cell ; Solar Hydrogen System ; Energy Management Scenario

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