针对天然气CCHP(冷热电分布式)系统供能与负载在时间和强度上不匹配及变工况运行效率低下的问题，提出一种基于热化学溶液蓄能技术的新型天然气基CCHP系统。该新型系统核心部件为热化学溶液制冷/蓄冷/释冷装置，具有制冷、蓄冷与释冷三重工况。采用化工动力流程模拟软件（Aspen plus）进行热力性能计算，以热力学第一、第二定律作为评价准则进行分析，结果表明：与参比系统比较，该新型系统总能系统热效率提高了14.3个百分点，达到80.2%；制冷量提升率最高可以达到61.2%；火用效率最高可以达到33.9%，低温烟气余热回收率达到36%。该新型系统结构简单，只需将传统天然气基CCHP系统补充热化学溶液制冷/蓄冷/释冷装置即可实现，具备提高冷供应量、提高总能系统效率和深度利用低温烟气余热等优势，该系统集成方法为其它能量系统集成研究提供思路，具有较好的市场应用前景。

In order to conquer the matching question of conventional CCHP (combined cold,heat and power) system between energy supply and energy demand,and the poor efficiency question because of variable operating conditions,a novel gas fired CCHP system was proposed based on chemical solution energy storage technology in this paper. Key unit of the novel gas fired CCHP system is a chemical solution energy storage unit that can realize functions of cool storage,cool discharge and refrigeration. The novel CCHP system and a reference system were simulated by ASPENPLUS and analyzed by thermodynamics analysis method and exergetic analysis method.The results indicated that PER（the primary energy rate）of the novel CCHP system is improved from 65.9% to 80.2%,and refrigerating capacity increase rate and exergy efficiency are increased to 61.2% and 33.9% respectively. The flue gas waste heat recovery rate reaches 36%. The novel gas fired CCHP system simply integrating conventional gas fired CCHP system with chemical solution energy storage unit,is able to improve refrigerating capacity and PER,and recover low temperature waste heat more effectively.The integration method in the paper not only provides ideas for the energy systems integration,but also has a good market prospect.

TK01+9

国家自然科学基金资助项目（51541603）；湖南省自然科学基金资助项目（2016JJ2021）