Thermo-economic analysis of the performance of the combined system with evacuated tube collectors.

Using combined cooling, heat and power systems can be an appropriate substitute for preventing emissions of pollutants and excessive consumption of fossil fuels. Utilizing renewable energy in these systems as a source of power generation can be an appropriate substitute for fossil-fuel-based systems. Therefore, in this paper, cogeneration cooling, heat and power systems based on gas-fired internal combustion engines with a solar-thermal system with evacuated tube collectors have been modelled and thermo-economic analysis has been done to compare fossil-fuel-based systems. The required rate of heat to supply the hot water is 50 kW. In the studied system, the internal combustion engine produces electrical energy. Then, the solar-thermal system with evacuated tube collectors and the gas-burning generator provide the thermal energy required by the studied building and the primary stimulus of the absorption chiller for cooling. In this study, two different scenarios are conducted in states considering simultaneous production systems and regardless of this environmental and thermo-economic analysis system. The results showed that the efficiency of the studied system was 60% in summer and 56% in winter. [ABSTRACT FROM AUTHOR]