Waste Heat Boiler

Jumag waste heat boilers use hot exhaust gas from an upstream process for creating steam.

Jumag waste heat boilers: Compact, efficient, robust, modular, no monitoring in many countries.


High heat exchange performance on a compact area

Modular design – cost effective adaptation to different requirements

No MOT monitoring - no boiler attendant in many countries

Easy to operate – user friendly

Robust vaporisation system in the form of a small shell boiler

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What is the sum of 9 and 9?



  • High heat exchange performance on a small area
  • Feedback to e.g. CHP units for load adjustment of the motor depending on the demand for steam
  • Three to four pass flue system
  • Energy efficient Jumag accessory for maximum efficiency
  • Combines the advantages of a large shell boiler with those of a quick steam generator

Robust and low maintenance

  • Small shell boiler type Pressure vessel with up to 9mm material thickness
  • No pipe coil

  • Low-maintenance centrifugal pump as a boiler pump

  • High reliability due to the simple and compact overall design

  • High standard of quality, due to common industrial components

User friendly

  • No approval or monitoring needed in many countries
  • Simple to operate via intuitive instruction on touch-screen controls in many languages
  • Can be operated manually, automatically or by external devices
  • Easy access for maintenance
  • Optional available with automatic blow down or desalination

Flexible and simple

  • Optimally adapted JUMAG accessory
  • Operating pressure up to 13 bars, working pressure 5 bars to 11 bars
  • Only requires small space thanks to compact design
  • Modular and expandable for further Jumag steam generator
  • Available as compact steam system including blow down unit and water treatment unit

The functioning

Basic equipment for the waste heat boiler includes:

  • Double-walled pressure element in the form of a small shell boiler
  • Low-maintenance centrifugal pump
  • Intuitive touch-screen controls
  • Integrated switch cabinet
  • In addition to the instructions for related safety components: Safety valve, over-pressure off switch, overheating shutdown exhaust, overheating shut-off for steam, low water cut-off switch, pump pressure monitoring, ...

The exhaust gases are introduced from above in the boiler.

Depending on the water level in the pressure vessel, the feed water is replenished by means of the boiler pump via the economiser into the pressure vessel.

The burner is controlled depending on the steam pressure. Via multiple pass flue-gas routing, the heat transfer takes place through the pressure vessel on the water.

In the economiser additional heat is transferred from the flue gas to the fresh water in a counter current. In the inner part of the pressure vessel the steam is dried.


In our download center you have compiled a number of documents, which provide important information about the products and services of the company JUMAG.