【作者】 王慧；

【导师】 赵华；

【作者基本信息】 哈尔滨工业大学 ， 供热、供燃气、通风及空调工程， 2012， 硕士

【摘要】 随着我国供热规模的不断增长，以及人们对供热质量要求的不断提高，供热负荷不可避免的增加，这对已有的管网的输配能力和整个供热系统的承载力提出了更高的要求。目前管网的改造和扩建存在着一定的盲目性，对可能出现的负荷估计不足，缺少对现有供热系统承载力进行全面评定以及提高策略的基础理论研究，本课题就在这样的背景下应运而生。本文简单介绍了多热源并网供热技术、分布式变频泵技术、混水技术等作为提升供热系统承载力的关键技术。首次将承载力概念应用于供热领域，提出供热系统承载力概念的两种描述方法。根据研究需要，提出承载度、提升度、供热系统承载力净增长率等概念。在供热系统承载力概念基础之上，分析了我国既有供热系统承载力水平和供热系统承载力提升的关键技术环节。并运用SWOT法，分析我国集中供热发展的优势、劣势、机遇和挑战，初步制定了适合我国供热国情的基本战略。初步构建供热系统承载力提高策略研究体系。在遵循供热系统承载力提高策略体系建立原则的基础之上，并通过阅读大量专业文献，建立供热系统承载力提高策略体系。本文针对供热系统承载力提高策略体系，制定了基于层次分析法的供热系统承载力各因素相对重要性的调查问卷，通过数十名供热领域专家的问卷调查结果，并根据层次分析法（AHP）的建立原则建立判断矩阵，经过矩阵计算进行承载力提升策略的权重匹配。本文通过软件中的群体决策功能确定各提高供热系统承载力策略的权重系数并对数据进行分析。供热系统承载力各提高策略权重系数的确定对于供热系统新建和改造工程具有重要指导意义。根据供热系统承载力提高策略体系以及层次分析法的数据分析结果，本文最后选取五常市热网作为提高供热承载力定量研究的具体应用实例分析对象。将五常市既有的双热源双管混水直连系统改造成双热源单向环网主干线混水直连系统，并在循环泵能耗、可靠性、供热系统承载力等方面进行对比分析。总之，供热系统承载力提高策略体系的定性研究和定量研究对于解决我国目前供热系统承载力水平不足与供热需求增长之间的矛盾问题具有重大指导意义。本课题来源于“十二五”国家科技支撑计划课题“严寒地区供热系统节能降耗关键技术与工程示范”（2011BAJ05B04）以及“城镇区域供热能源高效利用规划关键技术研究与示范”（2012BAJ04B01）。更多还原

【Abstract】 With the growing scale of China’s heating area, as well as the quality of the heatingrequirements continue to increase; the increase of the heating load is inevitable. Thedistribution capacity of the existing pipe network and the bearing capacity of the entireheating systems are put forward higher requirements. The renovation and expansion ofthe pipe network existing is a certain blindness, underestimated the load that may occur,the lack of a comprehensive assessment of the existing heating system carrying capacity,as well as the strategy is based on theoretical research, this topic in the context comesinto being.This paper briefly describes the multi-heat source supplying technology, distributedvariable frequency pump, mixing with water heating technology as key technologies toimprove the bearing capacity of the heating system. The carrying capacity concept isapplied to the heating field for the first time, which is proposed in two ways to describethe heating system carrying capacity. According to the research needs, carrying degreeand upgrading degree and growth rate of the heating system carrying capacity are putforward. The basis of the carrying capacity of the heating system, analysis of thecarrying capacity levels of heating systems and the key parts to enhance bearingcapacity of the existing heating system in China. And using the SWOT method, analysisof strengths, weaknesses, opportunities and threatens of China’s central heatingdevelopment, and roughly formulate the basic strategy for the national conditions ofChina’s heating.Preliminary construction of the heating system carrying capacity improved strategyresearch system. Follow the principles to establish heating system capacity improvedstrategy system, and through reading a lot of professional literature, the heating systemcarrying capacity improved strategy system is established. Based on the strategies forthe heating system carrying capacity and AHP, this paper develops a questionnaire tosurvey the relative importance of each factor. The survey results from dozens of heatingexperts in the field are used to establish the judgment matrix, the matrix calculation ofthe right of each carrying capacity upgrade strategy. This paper use group decision-making functions in the software to determine the weight coefficients of the heatingsystem carrying capacity improve d strategy and data analysis. The weight coefficientsare of big importance to guide the new construction and renovation project of heatingsystem.Finally, select the Wuchang City heating network as the heating carrying capacityof the quantitative study of application examples of objects according to the heatingsystem carrying capacity improved strategy system and the analytic hierarchy processdata analysis. Transform Wuchang existing dual heat source double-barreled troubled waters directly connected system into dual heat source unidirectional ring networkmain trunk troubled waters directly connected systems and analysis and circulate inrespects of pump energy consumption, reliability, heating system carrying capacity. Allin all, qualitative and quantitative studies of the heating system carrying capacityimproved strategy is of great guiding significance for solving the problem of thecontradiction between China’s current heating system load capacity shortage andheating demand growth.This topic from the "12th Five-Year" National Science and Technology SupportProgram of China "cold district heating system energy saving key technology andengineering demonstration"(2011BAJ05B04) and "the urban district heating energyefficient planning and key technology research and demonstration"(2012BAJ04B01).更多还原