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Analysis of a Fourth-Generation System to Provide Power, Fresh Water and Air Conditioning

Majidniya, Mahdi | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49131 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Saeedi, Mohammad Hassan; Amidpour, Majid
  7. Abstract:
  8. In this investigation the thermodynamic, economic and environmental analysis of a 4rth generation system for simultaneous produce of heat, power, water and cooling of a residential building in Tehran-Iran has been done. Four different system have been used for power generation: 1-combined cycle of Direct Internal Reforming Solid Oxide Fuel Cell and Gas Turbine (IRSOFC-GT) 2-combined cycle of Gas Turbine and Steam Turbine (GT-ST) 3- cycle of Gas Turbine with Recuperator (GT-R) 4- cycle of Steam Turbine (ST). A double effect absorption chiller has utilized to provide the cooling load of the building, while a heat exchanger provides its thermal requirement. Also a MED-TVC system was used to provide residential complex potable water. Due to the lack of exhaust gases heat, a heat pump and a compression chiller also has been used to provide the cooling and thermal loads. First, the required cooling, heating, potable water and electrical loads of the complex were calculated, then the power systems, air conditioning systems and desalination system combined in order to meet the demands of the complex. The results of the thermodynamic analysis on the 4 chosen system showed the values of 50%, 42%, 40% and 27% for electrical efficiency and 85%, 67%, 85% and 38% for total efficiency, respectively. Results of the economic analysis showed an 8, 6, 4 and 18 years of period of return for systems in 0.086$/kwH of electricity, respectively. For investigating the effects of varying the system from 2 to 4 generation a sensitive analysis has been done
  9. Keywords:
  10. Solid Oxide Fuel Cell (SOFC) ; Absorption Chiller ; Multi-Effect Desalination (MED) ; Thrmodynamic Analysis ; Fourth-Generation System

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