A Combined Thermal System with an Air-cooled Organic Rankine Cycle (ORC)

A combined heat and power (CHP) system with an air-cooled organic Rankine cycle (ORC) is proposed to relieve the shortage of the water resources. In the completely closed thermal system, the steam condenser of the power plant is simultaneously used as the evaporator for the ORC system, and the organic working fluid (OWF), R245ca, from the turbine exhaust is condensed by the ambient air. The performance of the combined thermal system is calculated, and the single and double recuperation are applied to raise the system performance. Furthermore, due to the sensitivity of the air-cooled ORC condenser to the ambient wind, the variational condition performance of the air-cooled ORC condenser at different ambient temperatures is calculated.