摘要
Abstract
To enhance the utilization efficiency of renewable energy in distributed energy supply systems,thermodynamic analysis is conducted on the solar-biomass gas-micro gas turbine cooling,heating and power system.Mathematical models for heat collection,phase change heat storage,gasification,power generation and dual-effect parallel absorption refrigeration are constructed to study the influences of material types,air-fuel ratio,solar refrigeration distribution and solution split ratio.The results show that the power generation efficiency corresponding to the gasification of wood is greater than 20%,while that corresponding to the gasification of animal fertilizer is only 10%.Increasing the fuel flow rate can reduce the air-fuel ratio,thereby enhancing the output of cold,heat and electricity.The system's electrical efficiency and overall efficiency will also be slightly improved.The higher the proportion of solar energy used for cooling,the higher the overall efficiency of the system.Reducing the split ratio of the dual-effect parallel absorption refrigeration cycle can enhance the performance coefficient of the refrigeration unit,thereby improving the overall efficiency.The micro gas turbine combined heat and power system(CCHP)that utilizes solar thermal energy and biomass gasification can achieve an electrical efficiency of up to 23%and a total efficiency of up to 85%.关键词
太阳能/生物质气化/微型燃气轮机/双效吸收式制冷/热电联产系统Key words
solar energy/biomass gasification/micro gas turbine/dual-effect absorption refrigeration/combined heat and power system分类
能源科技
