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named “pyrolisis” hot water boilers. The fuel ignition, as well as the fuel
charging is done manually, the ash deposition cleaning is also done
periodically by hand – this allows achieving optimal combustion process and
efficient and low cost heat energy for the heating system.
The boiler could utilized the following fuel – wood logs, preferably
chopped wood logs, having the following properties:
o
Pure wood, contaminated (i.e. painted, chemically treated as well as
other mineral or organic substances) wood is not allowed;
o
The length of the wood logs should correspond with the depth of the
fuel chamber of the boiler – see the specification of boiler;
o
The cross section (the diameter) of the wood logs should be : D
≤
200mm;
o
The moisture content of the raw material should be less than 20%
(W
r
≤
20%);
o
It is possible along with the wood logs to utilize other wood based
fuel – like saw dust, shavings and other small fuel particles, but their
quantity should be less than 20% of the total charged fuel in the
chamber of the boiler;
The boiler consists of
•
Steel plate heat exchanger, which transfers the heat energy from the
flue gases to the heating media (in most cases this is circulating water);
•
Flue gas fan, which extracts the exhausted gases out of the boiler;
•
Fuel chamber;
•
Ignition flap, utilized at the initial phase of fuel ignition and boiler
heating up;
•
Ceramic insulated combustion chamber;
•
Convective duct, which also heats up the air, consumed for the
combustion process;
•
Dash board for control and monitoring of the operating parameters of
the boiler;
•
Thermal insulation – made of mineral wool;
The boiler is equipped with
•
Thermo-manometer, which indicates both the operating temperature
and the operating overpressure of the circulating water;
•
Operating thermostat, which controls the flue gas fan;
