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2. Heated fluid circulation
2.1 The role of traffic
Traffic has two main objectives:
ensure the proper cooling of tubes located in the hottest areas or exposed to the direct radiation of the fire, and which receive the maximum heat flux at this point;
ensure saturated steam generation, i.e. the transition of the heated fluid from the water state to the emulsion and steam state (excluding supercritical pressure boilers, where the fluid conveyed is simply heated).
This paragraph deals only with questions relating to water circulation inside tubes, and excludes the case of systems with smoke tubes or fire tubes immersed in a volume of water (locomotive...
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Heated fluid circulation
