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Integrated Maisotensko Cycle with Desiccant-Based Ejector Cooling System for Energy and Carbon Saving

Alihosseini, Amir Mohammad | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 57278 (46)
  4. University: Sharif University of Technology
  5. Department: Energy Engineering
  6. Advisor(s): Aavami, Akram
  7. Abstract:
  8. Due to the heat waves in the summers in recent years, the increase in temperature and climate changes, as well as the increase in population, the demand for cooling in the home is increasing day by day. This increase in demand has had a significant impact on the supply of electricity in Iran. The lack of capacity has caused more power outages to occur in the summer in recent years in Iran. To avoid these problems, the capacity of power plants can be increased, which causes more fuel consumption and environmental pollution. Another solution can be to reduce the energy consumption of subscribers. This solution not only reduces energy consumption, but also reduces environmental problems. In this research, an effort has been made to reduce energy consumption in the home cooling section. Today, the majority of home systems are cooled using intensive refrigeration systems. In this research, it has been tried to reduce the energy consumption for the weather conditions of Sydney, Australia by removing the compressor from these systems by using an ejector and a moisture absorber, and then by generalizing it for the two cities of Yazd and Ahvaz, the possibility of using it for the conditions Iran should also be investigated. In the proposed system, an indirect contact evaporator called Maisotensko cycle is also used. The results of Maisotensko cycle modeling and its use in the simulated system show that the energy consumption for one summer is reduced compared to the intensive refrigeration systems. The energy consumption of the proposed system for Sydney weather conditions (humid and hot) consumes approximately 65,000 kWh (61%) less energy than the compact refrigeration system. Also, the amount of 35,000 kg (68%) emits less carbon dioxide. It also keeps the temperature of the building in the range of 21 to 27 degrees Celsius and the relative humidity of the building between 20 and 40 percent. The simulation has been done for one summer for the cities of Ahvaz and Yazd and for one year for the city of Kerman. Energy consumption for Ahvaz and Yazd cities is 102600 and 99250 kilowatt hours and carbon dioxide emission is 17194 and 16290 kg respectively. The results for the city of Kerman are also reported in the form of annual temperature, which shows that cooling is also done well for Iran's climate
  9. Keywords:
  10. Compression Refrigeration ; Evaporators ; Carbon Emission ; Cooling ; Ejector Refrigeration System ; Absorbers (Refrigerating Machinery) ; Maisotensko Cycle

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