From a control point of view, the difference is that the mix of networking and inter-networking thermal station the water temperature of the secondary network control method. The thermal station network for inter-networking, regulating valve to control the temperature of the secondary network backwater, regulating the flow of the secondary circulation pumps to control the temperature of the water supply of the secondary network; For mixed networking also adjust the heat station once a network of valves to control the secondary net return water temperature, secondary network of water supply temperature by adjusting the mixing pump flow control.
  Inter-networking or mixed network a network, each of the thermal station is equivalent to a heat user, the primary network is equivalent to a directly connected network, and the said straight networked adjusting method is also applicable; for the secondary network, thermodynamic The station is equivalent to the heat source, the secondary network is equivalent to a directly connected network, the directly connected network adjustment method fully applicable. Therefore, direct network adjustment method can be extended to inter-networking and mixed networking.
  Not installed the operating system adjust the thermostatic valve phased variable flow control
  Phased variable flow is divided into several stages throughout the heating season, the flow remains constant within each stage, from a stage of transition to another phase, the flow change. For example, the entire heating season is divided into the heating early - cold - heating the final three stages, the heating network traffic flow - flow - small flow of three flow value. From throughout the heating season, the flow is no longer completely fixed. Therefore, this mode of operation, the adjusting method described in the previous section are not necessarily all appropriate.
 

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