Thermodynamic analysis of a multigeneration system for electricity,cooling, heating production

The widespread use of fossil fuels in most human activities has led to adverse effects onthe environment, from global warming and greenhouse effects to climate change and acidrain. Renewable energy is at the core of many recent research activities to overcome theseenvironmental challenges. The use of solar energy as an integral part of other renewablesources occupies a large part of the world's energy framework. Multigeneration energysystems are used to produce multiple useful products using the same energy input. Thesesystems have great potential to reduce global warming. In the current research, atrigeneration system for power generation, cooling and hot water is presented. Thepurpose of this study is to investigate the possibility of producing a system for electricitygeneration for a complex using a gas turbine cycle and an organic Rankine cycle. Theenergy required to produce electricity in the proposed system is entirely throughrenewable energies. R۱۲۳ fluid is used as the working fluid in the organic Rankine cycledue to its environmentally friendly properties. Also, lithium bromide water is used as theworking fluid in absorption refrigeration cycles. To examine the system in terms ofenergy and exergy, the effect of changes in various parameters has been studied. Basedon the obtained results, the Brayton cycle turbine can produce the highest amount ofpower. The energy and exergy efficiency of the system decreases with the increase in theambient temperature.

کلیدواژه ها:

Multigeneration system ، renewable energies ، thermodynamic analysis ، Brayton cycle