楼宇分布式能源系统的研究

发布时间：2018-03-11 20:14

本文选题：分布式能源系统　切入点：适用性　出处：《山东建筑大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着社会经济的发展,能源结构不断调整,能源需求量不断增加,环境问题也愈发严重。为解决环境和能源问题,响应政府“节能减排”的号召,以节约能源为基础,分布式能源系统可满足用户的冷热电负荷需求,实现了能量的“梯级利用”,提高了能源利用率。首先,本文以寒冷地区的四种典型楼宇式建筑为例,分析它们的负荷特性和热电比对系统节能率、能源利用效率的影响,研究分布式能源系统对这几类建筑的适用性,以及天然气价格和电价对该系统可行性的影响。结果表明:寒冷地区的办公楼和宾馆建筑,在冬夏季比较适合采用分布式能源系统,而在过渡季不适合采用该系统;医院建筑全年均适合采用分布式能源系统,而商场类建筑则不适合采用该系统。其次,研究分布式能源系统常用的设备配置方案,以寿命周期成本最小为目标建立系统运行优化模型,根据建筑的负荷特性,确定最佳的配置方案。发现:当采用燃气轮机作为发电机组,烟气型吸收式冷热水机组回收烟气余热来制冷或供热,同时配备电制冷机和燃气锅炉共同运行的系统方案是最经济、最节能的。最后,利用MATLAB/SIMULINK平台,建立燃气轮机和烟气型溴化锂吸收式冷热水机组的仿真模型,分析影响设备运行的主要因素(环境温度、天然气量、烟气温度和流量、冷热水进口温度和流量等)。同时,将“智能化”理论应用到分布式能源系统中去,实现系统的智能运行与控制。
[Abstract]:With the development of society and economy, the energy structure is constantly adjusting, the energy demand is increasing, and the environmental problems are becoming more and more serious. In order to solve the environmental and energy problems, we should respond to the government's call for "energy saving and emission reduction", which is based on energy conservation. The distributed energy system can meet the demand of cold, thermal and electricity load, realize the "cascade utilization" of energy, and improve the energy efficiency. Firstly, this paper takes four typical building buildings in cold area as an example. This paper analyzes their load characteristics and the effects of thermal power ratio on energy saving rate and energy utilization efficiency, and studies the applicability of distributed energy system to these buildings. The effect of natural gas price and electricity price on the feasibility of the system is also discussed. The results show that the distributed energy system is more suitable for office buildings and hotel buildings in cold areas in winter and summer, but not in transition season. The hospital buildings are suitable for the distributed energy system all year round, but the market buildings are not suitable for the use of the distributed energy system. Secondly, the common equipment configuration scheme of the distributed energy system is studied. The system operation optimization model is established with the aim of minimum life cycle cost, and the optimal configuration scheme is determined according to the load characteristics of the building. It is found that when gas turbine is used as generator set, It is the most economical and most energy saving system scheme that the flue gas absorption chiller recovers the waste heat from the flue gas to refrigerate or heat the heat, and it is equipped with electric refrigerator and gas boiler to run together. Finally, using MATLAB/SIMULINK platform, The simulation model of gas turbine and flue gas type libr absorption chiller is established, and the main factors influencing the operation of the equipment (ambient temperature, natural gas quantity, flue gas temperature and flow rate, inlet temperature and flow rate of hot and cold water, etc.) are analyzed. The "intelligent" theory is applied to the distributed energy system to realize the intelligent operation and control of the system.
【学位授予单位】：山东建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU83

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