The current severe energy and environmental crisis seriously hinder sustainable development and carbon neutrality. To deal with the current situation, it is imperative to replace traditional fuels with sustainable energy and develop efficient conversion technologies. Therefore, this study develops an environmentally-friendly polygeneration system that combines solid oxide fuel cell power system, renewable energy system, and waste heat recovery system. The mathematical model of each subsystem is first established and validated with reference to the published literature. Subsequently, the power source potential investigation, subsystem performance analysis, multi-objective optimization, energy storage adjustment, and positive effects are carried out. Ultimately, the thermoeconomic, sustainability, and environmentally-friendly throughout the life cycle are thoroughly assessed. The numerical results demonstrate that the equivalent work, fuel exergy utilization efficiency, sustainability index, and carbon footprint reduction of the polygeneration system are 2671 kW, 70.8%, 3.49, and 2268 kg/h, respectively, and that the capex can be recovered within 3.99 years. Due to the synergistic effect of the storage system and renewable energy system, the cooling and heating are increased to 134 kW and 259 kW, respectively, thereby, effectively responding to dynamically changing demands. This configuration scheme offers considerable advantages in terms of thermoeconomic, sustainability, and environmentally-friendly, meets the carbon neutrality goals, and provides an important reference for the development of a new concept energy system with solid oxide fuel cell integrated renewable energy.

当前严峻的能源和环境危机严重阻碍了可持续发展和碳中和。应对当前形势，以可持续能源替代传统燃料，开发高效转化技术势在必行。因此，本研究开发了一种结合固体氧化物燃料电池发电系统、可再生能源系统和余热回收系统的环保多联产系统。首先参考已发表的文献建立并验证了各个子系统的数学模型。随后，进行了电源潜力调查、子系统性能分析、多目标优化、储能调整和积极效果。最终，热经济性、可持续性、并在整个生命周期中对环境友好进行了彻底评估。数值结果表明，多联产系统的等效功、燃料火用利用效率、可持续性指数和碳足迹减少分别为 2671 kW、70.8%、3.49 和 2268 kg/h，资本支出可在3.99 年。由于储能系统和可再生能源系统的协同效应，制冷和制热分别增加到134 kW和259 kW，从而有效响应动态变化的需求。这种配置方案在热经济性、可持续性和环保方面具有相当大的优势，满足碳中和目标，