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Session: Poster session & Sponsor Exhibition
Session starts: Monday 07 October, 14:00

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Xingyang Yang ()
Li Zhao ()

Abstract:
In this paper, a distributed combined cooling heating and power (CCHP) generation system based on organic Rankine cycle (ORC) and parabolic trough solar collectors (PTSC) is introduced. This project is the first distributed CCHP system driven by solar energy partially in China and will be finished by 2014. This CCHP system is mainly consisted of parabolic solar collectors, a natural gas boiler, an organic Rankine cycle, a heating process heat exchanger and a LiBr absorption chiller. In this project, 1000m2 parabolic trough solar collectors are used to collect solar energy. The heat transfer fluid (HTF) in the solar subsystem is heated to 330 ℃ from 245 ℃ through PTSC and natural gas boiler and then is cooled to 245℃ after the heat exchange with the evaporator of the ORC. This system is designed to produce 200kW electricity and the electrical efficiency of the ORC is more than 10%, using an organic turbine whose isentropic effectiveness is more than 70%. The evaporating temperature of the ORC is 290℃ and the super-heat temperature is 10℃. The exhaust gas is used to fulfill the heat load in the winter and the cold load in the summer for a 1500m2 residential building, which is about 75kW and 120kW separately. A LiBr absorption chiller is used to produce cooling energy. In the end, a software developed by our group is introduced and it aims at providing users an optimum design after optimizing of the system both economically and technically. The system, a single system or an integrated system, is totally or partially driven by solar energy.