摘要
分布式冷热电联供系统可以提高能源利用率,实现节能减排,开始逐步成为能源领域的研究热点。本文首先对联供系统的工作原理和运行策略进行了分析。基于生命周期理论,分别以联供系统相对于分供系统的一次能源节约率、当量CO2减排率、当量SO2减排率和当量PM2.5减排率为优化目标,对联供系统的运行策略和设备容量进行了优化设计。本文以华北地区一综合商务办公楼为例,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,并对最优结果的生命周期结构、污染物排放结构和能源消耗结构进行了分析。结果表明,优化后联供系统的节能减排效益要明显优于分供系统,燃料燃烧阶段的影响要大于其获取阶段的影响,CO2和SO2是污染环境、影响人体健康的主要因素。
Distributed CCHP system can improve energy utilization rate, save energy and reduce emissions, which has begun to gradually become a hot topic in the energy field. First, this paper gives an analysis to working principle and operating strategy of CCHP system. Based on the life cycle theory, it optimizes the design of operating strategy and equipment capacity of CCHP with primary energy conservation rate, emission reduction rate of CO/ equivalent, emission reduction rate of SO2 equivalent, and emission reduction rate of PM2.5 equivalent, of CCHP relative to distributed CCHP as optimization objectives, respectively. This paper gives an analysis with an integrated business office building in North China as an example, obtains optimal designs and operating strategies under different objective functions, and analyzes the life cycle structure, pollutant emission structure and energy consumption structure of optimal results. The results show that optimized CCHP system apparently has better energy conservation and emission reduction benefits than distributed CCHP, and produces greater impact at the fuel combustion stage than that at the acquisition phase, and CO2 and SO2 are the main factors polluting the environment and affecting human health.
出处
《建筑科学》
北大核心
2014年第2期30-34,40,共6页
Building Science
关键词
冷热电联供
运行策略
节能减排
生命周期评价
优化设计
combined cooling heating and power （CCHP） , operating strategy, energy conservation and emissionreduction, life cycle assessment, optimal design
