Thermodynamic and Thermoeconomic Investigation of a Multi-Generation Energy System Utilizing Solar and Biomass as Energy Sources

Abstract

A novel multi-generation energy system fueled solar and biomass energy are suggested and investigated, in the viewpoints of thermodynamic and thermoeconomic analyses. Electricity, heating and cooling power are supplied by means of a Rankine cycle, a heater, a double effect absorption chiller, a liquefaction natural gas subsystem, a multi-effect desalination system, a parabolic Trough solar collector and a combustion burner is utilized. Results show that, the system is capable to produce 16.11kW electricity, 28.94 kW heating power, 23.41 kW cooling power, 8.8 kg/h fresh water and 0.02 m³/h liquefied natural gas with the energy and exergy efficiencies of 46.8 %, 11.2%, and product cost rate of 15.16 $/h. Finally, a parametric study is carried out in order to survey the dependency of the thermodynamic and thermoeconomic performance upon the decision variables such as stack gasses temperature, temperature difference of evaporaor1, evaporaor2 temperature and Turbine inlet temperature.