All consumers are connected with a closed condensate–steam reservoir/separator. The steam is evacuated from the reservoir/separator with the ejector and as a secondary flow is compressed up to the consumer pressure, using boiler motive steam as a primary flow. The condensate, via the control valve, is transported to the boiler house with pipelines.
A float control and small pump moves condensate back to the steam boiler. In the condensate receiver system shown in our photograph and on similar systems we have inspected in which the steam boiler is sometimes not even in the same building as the condensate receiving system, a control on the receiver sends water back to the boiler.
Sep 22, 2020 · Sitting in condensing mode will do damage to the boiler, the flue piping and the chamber area of the boiler. As the condensate runs down the cast iron and saturates the chamber area, the integrity of the material used to make the chamber becomes compromised and can collapse into the burners. If you see this is happening, take a look at your ΔT.
As long as any impurities picked up during condensate transport are removed, condensate can be reused as boiler feedwater, reducing water supply and treatment costs, as well as costs associated with cold water used to lower condensate temperatures before sewering, where applicable.
Condensate and flash steam from the trap on the primary coil is passed directly to the secondary coil. Here, any flash steam produced by the drop in pressure across the trap is condensed, while giving up its heat to the feedwater. A typical arrangement is shown in Figure 14.6.7. Another example of this idea is shown in Figure 14.6.8.
Condensate Recovery Using a Mechanical Pump A mechanical pump is used to transport condensate to a distant collection tank. This method doesn't require electricity, but requires a secondary pressure motive fluid such as steam. Using a Specialized Centrifugal Pump for Condensate Recovery Pumps
Steam Heat Condensate Piping, Pumps, Return Lines
Steam Condensate - an overview | ScienceDirect Topics