燃气内燃机分布式能源系统的热力学分析

摘要

针对上海某厂新建燃气内燃发电机组分布式能源系统，基于热力学第一定律和热力学第二定律分析了该系统在不同季节、不同运行模式下的能源综合利用率和㶲效率，结果表明：本能源系统在采暖工况下具有更高的能源利用率和㶲效率；与分产系统（市电+燃气锅炉+电制冷）相比，分布式能源系统能源利用率提高14%-19%，㶲效率提高12%-15%。%Aiming at some new-built factory in Shanghai with gas-fired internal-combustion generator units distributed energy system, based on the first law of thermodynamics and the second law of thermodynamics the article analyzes comprehensive energy utilization rate and exergy efficiency under different seasons and different operation modes. The results show that:under the heating condition this energy system has higher energy utilization ratio and exergy efficiency;compared with distributed system (city electric power and gas-fired boiler plus electric refrigeration) , the distributed energy system energy utilization rate increases 14%-19%and exergy efficiency increases 12%-15%.