西咸新区某园区集中供热方案研究

发布时间：2018-07-15 07:17

【摘要】：集中供热系统是城市重要的基础设施之一，具有节约能源、改善环境、提高供热质量、增加电力供应等综合效益。科学合理的集中供热方案对于城市的发展有着重要的意义。本文将西咸新区某园区作为研究对象。首先，对园区的自然条件、现状热源、现状热负荷做了实地调查，并对园区近、远期规划的各类热负荷进行了详细的计算和分析。然后，结合规划热负荷大小及分布，分别采用热电厂、燃煤锅炉房、燃气锅炉房三种热源方案进行热力站的选择和热网的布置。并对热网进行水力计算和水力平衡，绘制出系统的水压图，，分析管网运行压力。之后，对三种方案分别进行初投资估算、年运行费用估算、能耗计算和大气污染物排放量计算。通过比较以上数据，对各个方案进行经济效益和环境效益分析。最后，引入层次分析法（AHP）对三种方案进行综合效益评价，确定最优方案。并总结出对于本项目不同方案的综合效益评价值R随环境效益权重X的变化关系。分析结果表明：对于本项目，燃煤锅炉房集中供热方案综合效益最高。本文结合实际工程项目，利用层次分析法对三种不同的供热方案进行分析研究，选出其中最优方案，对园区的集中供热规划具有指导意义。
[Abstract]:The central heating system is one of the most important infrastructure in the city, which has the comprehensive benefits of saving energy, improving the environment, improving the heating quality and increasing the power supply. The scientific and reasonable central heating scheme is of great significance to the development of the city. This paper takes a park in Xianxian New area as the research object. Firstly, the natural condition, current heat source and current heat load of the park are investigated, and detailed calculation and analysis of all kinds of heat load in the near and long term planning of the park are carried out. Then, according to the size and distribution of thermal load, three heat source schemes, namely, thermal power plant, coal-fired boiler room and gas-fired boiler room, are adopted to select the thermal station and arrange the heat network. The hydraulic calculation and hydraulic balance of the heat network are carried out, the hydraulic pressure diagram of the system is drawn, and the operating pressure of the pipe network is analyzed. After that, the initial investment estimation, annual operating cost estimation, energy consumption calculation and air pollutant emission calculation are carried out respectively. By comparing the above data, the economic and environmental benefits of each scheme are analyzed. Finally, AHP is introduced to evaluate the comprehensive benefit of the three schemes to determine the optimal scheme. The relationship between the comprehensive benefit evaluation value R and the environmental benefit weight X for different schemes of this project is summarized. The results show that: for this project, the comprehensive benefit of central heating scheme of coal-fired boiler room is the highest. In this paper, three different heating schemes are analyzed and studied by using the analytic hierarchy process (AHP) combined with the actual engineering projects, and the optimal scheme is selected, which is of guiding significance to the central heating planning of the park.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU995

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