生物质能与冷热电气联产耦合系统研究进展

当前冷热电联产系统广泛与生物质气化、生物质厌氧发酵、生物质直燃等生物质能利用技术相耦合。合理耦合后不仅能发挥生物质资源储量大、分布广、可再生、低污染、利用方式多样等优点，更因生物质资源相较太阳能、风能等独有的可运输、可储存特点，可轻松实现冷热电的高效稳定输出，克服当前太阳能、风能等可再生能源利用时，由于可再生能源自身固有的时间不稳定性、空间不稳定性所带来的系统稳定性差的问题。凭借高能源利用率、低污染、运行稳定等优点，将生物质能利用技术与冷热电联产系统耦合越来越受到研究人员的青睐。该文综述了耦合生物质资源能源化利用的冷热电气联产系统的发展基础、系统集成、系统运行模式、系统多维评价及系统优化，结合当前研究现状，从多方面预测了相关系统的发展方向，为相关系统的推广与发展提供参考。

Research progress in biomass coupling cogeneration systems for cooling, heating, and electricity

The BIOMASS-CCHP system has been one of the most promising key technologies in the field of renewable energy. Excellent development prospects can be integrated with biomass gasification, anaerobic fermentation, direct combustion, and energy utilization. Biomass resources are characterized by large reserves, wide distribution, low-pollution, renewable, transportable, and storable energy. The high efficiency of cooling, heating and electricity can also be achieved, compared with solar and wind energy. The stable output can be used to compensate for the inherent instability in time and space of other renewable energy. This article systematically reviewed the development, integration, operation mode, multi-dimensional evaluation, and optimization of the BIOMASS-CCHP system. Future research directions were also given from many aspects. First of all, the biomass resources were classified, according to the continuous maturity of advanced technologies in biomass gasification, anaerobic fermentation, and direct combustion. Reliable technical support was provided for the combined cooling, heating, and electrical fertilizer production. Secondly, the entire process management of biomass resources was emphasized for the system integration, including biomass collection, conversion, storage, and energy production. The system structure and process flow were designed for the efficient conversion and comprehensive utilization of energy, particularly for the better performance of the overall system. In operating mode, the biomass energy was converted into electrical, heat, and cold energy. The operating mode was optimized for the flexible allocation of energy output, meeting different energy needs, and the adaptability and economy of the system. The multi-dimensional evaluation was implemented to fully consider the system''s economy, environmental friendliness, and social benefits. A better understanding was gained of the sustainable development and social benefits of the system. Finally, the system was optimized for long-term stable operation. Technological innovation and process optimization can greatly contribute to improving the efficiency of energy utilization. Pollution emissions can also be reduced to make the system more environmentally friendly, economical and sustainable. Future development directions included the efficient energy conversion of biomass, the application of intelligent control systems, and collaborative optimization with other renewable energy sources. Carbon capture and utilization can also be introduced to strengthen social participation and educational promotion, in order to promote international cooperation and standard setting for the economic feasibility of the system. The quantitative assessment of socio-economic benefits will further promote biomass energy coupled cooling, heating and electrical cogeneration worldwide. To sum up, the key issues were proposed in the development foundation, system integration, operating mode, multi-dimensional evaluation, and system optimization. At the same time, the future development direction can be required for the joint efforts of more scientific research institutions, enterprises, and society. Biomass energy coupling systems can greatly contribute to the sustainable development of renewable energy.