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Exergy and economic analysis of solar chimney in iran climate: tehran, semnan, and bandar abbas

Ahmadi, M. H ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.18280/mmep.070107
  3. Publisher: International Information and Engineering Technology Association , 2020
  4. Abstract:
  5. Solar chimney is one of the attractive approaches to produce power from a clean source of renewable energy. In this investigation, a potentiometric study is carried out to find out a best location for construction of a solar chimney in different climates of Iran, in the Middle East. With this objective, three locations with different weather climates were chosen, i.e. Tehran, Semnan, and Bandar Abbas. These locations were chosen due to their different climatic conditions and solar irradiation. The used weather conditions are extracted for the middle day of summer, 6th August. The output power of the solar chimney plant was assessed as a function of various thermo-physical properties such as ambient pressure, ambient temperature, and local average solar irradiation. Three different typical geometry size were designed to assess the effect of ambient pressure on the output power meanwhile ambient temperature and solar irradiation is supposed to be the same for all cases. It is concluded that the output power is not significantly changed for different selected cities. In addition, Genetic algorithm (GA) is used to optimize the geometry size, performance, and economic factors of the solar chimney in three different cities. It is obtained from GA algorithm that Bandar-Abbas is the best location to construct a solar chimney. The collector diameter of 1544.82m and chimney height of 823.35m is calculated as the optimized geometry of the solar chimney for constructing in Bandar-Abbas city. Moreover, performance and economic considerations resulted that the solar chimney in Bandar-Abbas is able to produce 167.18 MW output work and the net present value after a 25 years of 6350.3x1012$. Exergy assessment resulted that the solar chimney in Bandar-Abbas is the most destructive exergy condition since the input ambient temperature and the bigger geometry size of this solar chimney. After Bandar-Abbas, Semnan and Tehran were ranked, respectively. © 2020, International Information and Engineering Technology Association
  6. Keywords:
  7. Exergy ; Optimization ; Solar chimney ; Solar radiation intensity
  8. Source: Mathematical Modelling of Engineering Problems ; Volume 7, Issue 1 , 2020 , Pages 55-67
  9. URL: http://www.iieta.org/journals/mmep/paper/10.18280/mmep.070107