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什么叫大流量、小温差的运行方式?它是怎样形成的?运行中有哪些弊端呢? 所谓大流量指的是热网实际运行流量大于设计流量或理想流量(指满足实际热负荷分布的流量)。当实际运行流量大于设计流量或理想流量时,则热网的实际供、回水温差必然小于设计值或理想值(亦即热网实际供水温度降低,回水温度升高)。因此,运行中的大流量、小温差显然是同时出现的。
What is the operation method of large flow and small temperature difference? How is it formed? What are the disadvantages of the operation? The so-called large flow refers to the actual operation flow of the heating network is greater than the design flow or the ideal flow (refers to the flow to meet the actual heat load distribution ). When the actual operation flow is greater than the design flow or the ideal flow rate, the actual temperature difference between the actual heat supply and return water of the heat network must be less than the design value or the ideal value (ie, the actual temperature of the heat supply network is decreased and the return water temperature is increased). Therefore, the large flow and small temperature difference during operation clearly appear at the same time.