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Example of Gasifying Boiler for Wood           Most of you already have some experience in using wood or wooden briquettes for heating either in boilers or fireplaces. These fuels are widely available at reasonably good prices. A new product, not yet known by all, is the so-called pellets, which are produced in a similar way as wooden briquettes by high-pressure pressing of waste wood (dry sawdust and chips) without any binder. It is predicted that in the near future the same production technology shall be used to produce pellets from straw and various biological wastes. The most frequently used pellet size is with a diameter of 6, 8 and 9 mm and a length of 5 to 25 mm. The heating value is approximately the same as for wooden briquettes, ranging from 17 to 19 MJ/kg. It is very important to store pellets in a dry place to prevent their deterioration.

          Our company has designed D15P, D20P, D35P and D50P pellet boilers and there is higher outputs being designed.

           The main advantage is that in comparison with natural gas or oil, these boilers combust renewable energy sources which makes their prospects look very good.


                 


1. Boiler body
2. Feeding door
3. Ash pan
4. Control panel
5. Regulatory valve
6. Refractory bricks - bottom of combustion chamber
7. Refractory bricks - dome-like chamber
8. Screen
9. Thermometer - thermostat and switches
10. Honeywell FR 124 - output regulating device
11. Door lining

12. 18mm x 18mm door insulation
13. Closure
14. Refractory bricks - rear part of dome-shaped chamber
15. Air-slide - regulation of incoming air
16. Cooling loop
17. Burner slot
18. Cleaning window
19. Brake valve
20. Cleaning cover
21. Suction ventilation ( only for D 20 P boiler )


                                        

D 15 P


D 20 P




                 

Type         ATMOS

D 15P

D 20P

 Pellet boiler output

KW

4,5 - 15

6 - 22

 Weight of boiler

kg

259

305

 Fuel

 

WOODEN PELLETS OF QUALITY, DIAMETER Ø6 – 8 mm / white pellets /

 Náhradní Fuel

 

BARRELWOOD 12 TO 20 PER CENT / HEATING CAPACITY 15 – 18 MJ/k / DIAMETER Ø70 – 150 mm

 Wood charging hopper volume

dm3

70

70

 Maximum length of wood

mm

310

310

 Volume of water in boiler

l

65

82

 Pellet burner type

 

IWABO VILLA S or ATMOS ERATO GP20

 Pellets container

 

EXTERNAL - 250, 500, 1000 l

 Connecting voltage

V/Hz

230 / 50

 Power demand at the start

W

1120

1170

 Power demand during the operation

W

120

170

 Boiler height

mm

1340

1340

 Boiler length

mm

590

590

 Boiler length

mm

490

490

 Flue axis height from the ground

mm

1078

837

 Flue diameter

mm

152

152



                     

Component

A
B
C
D
E

Tank
Boiler
Conveyor
Pellet Supply Hose
Burner


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