太阳能冷热电联供系统的多目标优化设计与运行策略分析

为了提高能源利用率,实现节能减排,设计了一种集成太阳能利用和内燃机驱动传统联供系统的太阳能冷热电三联供系统,对其能量流程和运行策略进行了分析。基于生命周期分析法,以传统分供系统为参照对象,建立了能源、环境和经济效益的多目标优化模型,对系统的设备容量和运行策略进行了优化。以北京市一综合办公楼为例进行实例分析,得到了不同目标函数下的最优设计方案和运行策略。优化结果表明,太阳能联供系统的综合性能要优于分供系统,当系统采用电跟随运行策略时环境和经济效益更佳,采用热跟随模式时能源效益更好。

Multi-objective Optimization Design and Operation Strategy Analysis of a Solar Combined Cooling Heating and Power System

In order to improve the energy efficiency and achieve the purpose of energy saving and pollutant emission reductions,a solar combined cooling heating and power(CCHP) system which integrated traditional CCHP system driven by gas engine with the utilization of solar energy was presented in this paper.The energy flow and operation strategy of the system were analyzed.Based on the life cycle assessment(LCA),the equipment capacity and operation strategy were optimized to achieve the maximum energy,environment and economic benefits in comparison to separation production(SP) system.An office building in Beijing was selected as a case to obtain the optimal design and operation mode for different objective functions.The results indicate that the comprehensive performances of the solar CCHP system are better than that of the SP system.Moreover,when the system operates following the electricity loads its economical and environmental benefits are good.While when the system operates following the thermal loads its energetic benefits are powerful.