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Energy Systems for Multigeneration Purposes

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Energy Systems for Multigeneration Purposes ( energy-systems-multigeneration-purposes )

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system, waste heat from the plant’s prime mover (e.g., gas turbine, diesel engine, or Rankine cycle [6]), sometimes with temperature enhancement, drives heating and cooling devices. The heat can be used for space heating, domestic hot water production, or to produce steam for process heating. The heat can also be used for cooling, by driving an absorption chiller. Pospisil et al. [33] performed an energy analysis of a trigeneration system and compared cogeneration and trigeneration plants for a typical building. The results showed that cogeneration can increase the efficiency by about 31% while trigeneration systems increase efficiency by about 39% compared to a single generation system. Al-Sulaiman et al. [34] reported the performance comparison of threetrigenerationsystems using organic Rankine cycles. The systems they considered consist of SOFC-trigeneration, biomass-trigeneration, and solar-trigeneration. Martins et al. [35] studied the thermodynamic performance assessment of a trigeneration cycle considering the influence of operational variables. Calva et al. [36] studied the thermal integration of trigeneration systems. They focused on trigeneration schemes where a gas turbine is used as a prime mover for power production and cooling is generated by a typical compression refrigeration system. Huang et al. [37] reported a biomass fuelled trigeneration system in selected buildings. This trigeneration system consisted of an internal combustion (IC) engine integrated with biomass gasification. In their system the gas generated by the biomass gasifier was used to provide electricity for a typical building using an IC engine. The waste heat is then recovered from the engine cooling system and exhaust gases are utilized to supply hot water for space heating; excess heat was also used to drive an absorption cooling system. Rocha et al. [38] studied the performance tests of two small trigeneration pilot plants. The first system was based on a 30 kW natural gas powered micro turbine, and the second used a 26 kW natural gas powered IC engine coupled with an electrical generator as a prime mover. They also used an ammonia water absorption refrigeration chiller for producing chilled water. Huicochea et al. [39] carried out a thermodynamic analysis of a trigeneration system consisting of a micro gas turbine and a double effect absorption chiller. The system consisted of a microturbine to produce electrical power, a double effect absorption water LiBr chiller for air conditioning and a heat exchanger to produce hot water. Chicco and Mancarella [40] proposed some energy indicators to assess the fuel efficiency of a trigeneration plant. Chicco and Mancarella [41] applied these energy indicators to introduce a planning criterion called equivalent gas price. Aghahosseini et al. [42] reported the 39

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