Steam technical information

    
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Biomass boilers
         For warm water

  • BIO
    Automated, pellet, wood chips,

  • Farmer
    Automated, pellet,wood chips,
    wood logs, multifuel


  • Automat
    Self-loading, automated,
    pellet, wood chips, multifuel

Steam boilers    

  • Low pressure steam (0,5bar) automated boilers for biomass, pellet, wood chips, multifuel        

Coal boilers

  • Automated brown coal boilers
    For warm water or low pressure steam

Fuel feeder systems


CARBOROBOT Steam boiler system, feed water

 

 

1. Stem boiler pmax. 0.5bar
2. Safety valve
3. Steam flow line
4. Air intake valve
5. Feeder Pump
6. Shut-off tap
7. Solenoid Valve
8. Heat exchanger for hot water heating
9. Thermostat
10. Buffer tank for domestic hot water
11. Water meter
12. Cauldron
13. Water softener
14. Water supply
15. Water sampling tap
16. Soft Water (0.1N °)
17. Steam trap
18. Condensate collection tank and pump
19. Level switch
20. Heated feed water tank
21. Heating pipe
22. Chemical Tank and Pump
23. Check valve
24. Safety valve outside wall outlet obstruction-free
25. Sample Cooler
26. Waste water drain
27. Sludging / tap
28. Circulating Pump
A CARBOROBOT Steam principles of boiler operation

The operation of the steam boiler is regulated in accordance with steam pressure. Pressure is measured by a high-precision semiconductor sensor. As pressure increases and reaches the value set in item 8.13 the flue gas flap closes but the fan continues to operate and the grate keeps moving. This reduces the amount of air flowing into the boiler and the output of the boiler will decrease accordingly. If pressure increases further,the fan will be shut down and the grate will be stopped by the controls. This, in turn, will quickly reduce performance and steam pressure will drop. When steam pressure drops below the upper cutoff limit, the fan is reactivated and the grate starts moving; upon further reduction of the pressure the flue gas flap opens which further increases output and steam pressure. These phases will alternate as steam pressure changes. The maximum value that can be set on the pressure gauge is 0.50bar. Two different switch values can be set on the pressure gauge. The lower pressure value is 0.05bar lower than the defined highest allowable pressure and the flap closes at this value (e.g if maximum pressure is set to 0.45bar, the lower switch value is 0.40bar).The lower pressure value has no hysteresis. Upon reaching the upper pressure value (e.g. 0.45bar) the fan and the grate will both stop. The hysteresis of the upper pressure is 0.01bar, i.e. the fan switches back on at a pressure 0.01bar below the set maximum pressure (e.g. it switches off at 0.45bar



The boiler possible to use to heat hot water system with the special pipework. The best proven method when in the boiler steam pipe we place adjustable valve junction. From here led in the steam-heated hot water system or the water tank through a lamellar heat exchanger. In this case, the steam boiler is always operate in steam mode and we can is chosen the amount of steam entering the heating system.
So it is possible to simultaneously use the steam for heating and technological purposes. Be sure to this double mode, the heating steam removal is not to be large enough to interfere with the use of technology.
This mode should only be used when going to the steam boiler and the type of load reaches a specified power rating of at least 30%.



During boiler operation, it is of utmost importance to ensure adequate water levels and water quality. The boiler must be fed with soft water, hardness must not exceed 0.1 °dH. Every time the boiler is refilled salt content in the water is deposited which can lead to scaling, reducing the efficiency and life expectancy of the boiler. Soft feeding water also contains salts and corrosion may slowly take place in the iron elements of the boiler; in the steam boiler, pollution builds up and must be removed through the decantation areas provided (2.5). Feeding water also contains solute gases which cause corrosion. Degassing techniques are commonly described in steam boiler related literature; it is the contracted installer’s and the user’s responsibility to utilise such techniques. Malfunctions resulting from scaling, corrosion or the lack of decantation are caused by inappropriate use therefore the Manufacturer does not take responsibility for such malfunctions and these are not covered by the warranty. Significant care must be taken when preparing feed water used in steam boilers. The quality of feed water must be checked regularly to avoid premature problems with the boiler. Feed water quality issues are summarised in the table below. Feed water specifications as per EN 12953-10


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