Optimized design of renewable energy CCHP system combined with exergy efficiency

RES-CCHP system can improve energy utilization rate and renewable energy consumption rate. It is an important way to solve the energy and environmental problems as well as having great potential for development. In this paper, a combined cooling and heating power system based on natural gas and solar energy is designed. On the basis of the traditional economic, energy and environmental indexes, the exergy efficiency improvement rate is innovatively added into the evaluation indexes, and the optimization design model for the above four objective functions is established. The optimization of equipment capacity and key operating parameters are realized by using genetic algorithm. Finally, a case simulation is carried out. The results show that the RES-CCHP system after optimized design can not only meet the demand of the load side, but also effectively realize energy saving, emission reduction and efficient utilization of thermal energy.