The Performance Study On Combined Cooling Heating And Power System Based On30kW Micro Turbine

Combined Cooling Heating and Power（CCHP）system based on micro turbine is atrigeneration system with cascade utilization of energy, which can improve the primaryenergy efficiency and have great advantages at energy saving, environmental protectionand seasonal balance of energy requirement. The performance simulation of CCHPsystem based on a30kW micro turbine and absorption chiller is studied.Firstly, the cooling heating and power load of the CCHP system’s user areanalyzed. The mathematical models of main components are built by modularizedmodeling, such as mirco turbine and absorption chiller. The availability of these modelsare verified by comparing with the sample data. The performance simulation of CCHPsystem is studied via these models mainly in the following aspects:The performance of CCHP system under the cooling and heating workingconditions are simulated respectively. The results show that the environmental effectson the system efficiency though power efficiency, cooling(heating) efficiency, overallresource efficiency, etc.Under the conditions of satisfying the cooling (heating) demands, the operatingperformances of the system under different ambient temperature are simulated. Theoperating performance of this system throughout the year is further simulated based onthe previous conclusion. The results show that: the cooling (heating) production throughthe waste heat is less than50%of load demand of users, therefore the absorptionchillers need a lot of supplementary gas burned to improve cooling(heating) capacity,which reduces the potential of energy saving. This CCHP system should not be runduring the transitional seasons. When the system does not run during the transitionalseasons, the average overall energy efficiency of a year is more than70%.Finally, three different configurations are proposed based on this CCHP system inorder to improve the system configurations suitable. Each of configuration is simulated.Comparing among these configurations is analyzed through different aspects, such asthe match between all equipment, utilization of waste heat, power efficiency of CCHPsystem, cooling(heating) efficiency, overall energy efficiency, etc.