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
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CARBOROBOT Steam boiler
system, feed water |
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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 |
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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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