Save energy and CO2! The second, downstream economiser is a heat exchanger that uses the energy contained in the flue gases to heat water.
The JUMAG Economiser: Function and Benefit
What is the additional economiser used for and what are its advantages?
Makes steam generation even more economical and efficient
The second economiser (heat exchanger) is connected on the flue gas side between the first economiser and the chimney. The water to be heated flows in a counterflow to the flue gases to be cooled. The lower the temperature of the flowing water, the higher the efficiency.
The second economiser uses the thermal energy contained in the flue gases to heat water, for example for:
- the feed water supplied to the boiler
- the fresh, softened water supplied to the feed water/condensate container
- soft water for other uses
Demand-driven: Preheating of boiler water or feed water
- If the condensate return flow is low (< 25%), the economiser can also preheat the feed water before it is fed into the feed water container.
- If the condensate return flow is high (> 25%), the integrated and the downstream economiser are connected in series. Both economisers are now used to heat the feed water before it enters the boiler.