The performance analysis of organic rankine cycles combined CCHP system

In the past few years, Distributed Energy Resources (DER) have been received increasing attention all over the world, on the account of benefits in environment and economy as an energy system. Combined Cooling, Heating, and Power (CCHP) system as a general DER mode is an effective solution to save energy and reduce the pollution, while ORC (Organic Rankine Cycle) is an effective means to Recovery of waste heat power generation. In this paper, a new system combined CCHP and ORC is described. A Non-Liner Programming (NLP) model is established to optimize the equipment like Internal Combustion Engine (ICE), heat recovery system, gas boiler, absorption chiller, heat exchangers and ORC system. The economic efficiency, energy efficiency, environmental benefits are taken into account. Because the ORC system is not mature, a discussion about the changing of ORC system price is made. The result shows the price of ORC has dramatic influence to the capacity of ORC in the combined system. But it has little influence to other equipment capacity. Added an ORC system to CCHP is more environmentally friendly.