Promotion Strategies Of Heating System Carrying Capacity And Reconstruction Case Study

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).