| Multi-heat sources heating network system refers to two or more heating sources to form a heating system for heating users.With the continuous expansion of the scale of heating system,heat supply network has been applied more and more widely.Compared with traditional one-source heating system,multi-heat sources heating system has many advantages,such as improving the safety and reliability of pipeline operation,solving the mismatches between heat sources and loads,reducing energy consumption and so on.In this research,previous researches were reviewed,and the analysis based on district heating system with multi-heat sources in the eastern part of Jinan was conducted.The analysis includes analysis of heat source and pipe network,analysis of operational strategy,method of load regulating,optimization of heat load distribution,schedule of proposed source,and so on.Besides,adjustment method of long distance pipeline network was proposed,and long distance pipeline emergency switching scheme was also put forward.In addition,the research on hydraulic calculation of long distance pipeline network under several working conditions was carried out.The results showed that,multi-heat sources network in the eastern part of Jinan could improve the reliability of the pipe network,reduce the reserve rate of each heat source equipment,improve the utilization rate of equipment and improve heating capacity of the pipeline network.Under the condition of heating quality,multi-heat sources network should be applied,and to make the heat source with low energy consumption to run as much as possible to reduce the heat supply of high energy consumption.After joint operation of the heat-supply networks,the costs of raw materials reduced about 26.6 million yuan,electricity consumption reduced about 4.489 million degrees during the entire heating season,which increased the economic efficiency of central heating in Jinan. |
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