MAGA s.r.o. - gasifying boilers for biomass (wood)

GASIFYING BOILERS

THE ADVANTAGES OF THE USE OF WOOD GASIFICATION BOILERS

Possible use of large pieces of wood
Both primary and secondary air is preheated to a relatively high temperature – higher heating coefficient of performance
After all fuel is burnt, the fan will automatically turn off
Easy & simple operation and maintenance, cleaning
The combustion chamber (firebox) is fitted with ceramic blocks - high coefficient of performance
Large solid fuel hopper - a long time of burning
Large ashtray
The boiler is equipped with a pipe wall – provides easier way of cleaning
High quality
High heating coefficient of performance
A low fuel consumption
Easy, convenient and very comfortable operation (fuel is only necessary to be fed 2 or 3 times in 24 hours)

BOILER OUTPUT CAPACITY REGULATION :

ELECTROMECHANICAL METHOD
The MAGA MA boiler allows output capacity regulation by switching on and off an EBM fan equipped with an overpressure protection device (overpressure valve) which automatically opens based on the air pressure upon turning on the fan.

This type of boiler is further equipped with a regulating thermostat located on the boiler’s panel. It operates the fan (switch on/off) depending on the preset heating water output temperature (80-85 °C). The boilers are also equipped with a combustion product thermostat that serves as switch-off means for the fan after all fuel has been consumed. The boiler can also operate, at a reduced output capacity, without using the fan – e.g. under blackout conditions.

MICROPROCESSOR-BASED METHOD
A microprocessor-based control unit with a digital boiler temperature display controls the operation of the fan and the pump depending on the preset heating water temperature.
Upon request, a boiler can be delivered equipped with a combustion product temperature‑based control unit (a chimney sensor).

ENVIRONMENT

The reverse combustion process and the ceramic combustion chamber (firebox) enables nearly ideal burning conditions to be achieved with a minimum amount of harmful emissions. The boilers satisfy the limits required for an environmentally friendly product. The boilers satisfy the requirements of Emission Class 3.

BOILER INSTALLATION

A boiler must be installed in such manner that the reverse temperature does not not fall below 60 - 65 °C and the output temperature ranges between 80 and 90 °C. Installation using a 4-way valve or a thermostat is recommended. The best installation method for these boilers is the use of heat storage units.

THE FOLLOWING CONDITIONS ARE RECOMMENDED TO BE SATISFIED AT ALL TIMES:
Always burn dry wood with 20 percent or less moisture content (i.e. pieces of wood 1 to 2 years old). This requirement is often underestimated.

Make sure that your boiler is installed properly using a 4-way valve, a thermoregulating valve, and Laddomat. The reverse temperature of a boiler must under no circumstances (in no working mode) drop under 60 - 65 °C, and the heating water temperature at the boiler’s output must at all times range between 80 -90 °C; otherwise tar and other condensates (acids) may accumulate in the boiler.

Your boiler’s output capacity should be designed properly for your heated space – the thermal losses in your premises/building/space and the actual heat consumption must correspond to the boiler’s output capacity. The boiler should not be extremely overdesigned, nor should it be extremely underdesigned.

Your boiler’s output capacity should be fully utilized – the boiler is not intended to operate permanently at its minimum capacity, which is necessarily accompanied by low combustion products’ temperature (e.g. when the boiler is operated during the summer season for water heating purposes only). In such cases, the acids and tars will not burn completely and will accumulate as deposits in the fuel bin. Subsequently, the boiler and the chimney will suffer damage. This problem can be avoided by installing the boiler together with heat storage units or by lighting it up on a daily basis.

The boiler must not be continually operated at an output capacity less than 40 % of its rated capacity.

MAGA MA - wood-gasifying boiler

The boiler provides fuel pre-drying with subsequent gasification at a high temperature. Both the primary and the secondary air flows are preheated and then distributed in a desired, ideal proportion to the boiler’s firebox and to the nozzle. The primary combustion air is driven in to the combustion chamber through the space beneath the upper door. An even distribution of the preheated primary air ensures that only smaller amounts of fuel are gasified. Therefore, the boiler is highly economic and has a high heating coefficient of performance - as much as 89 % throughout the output capacity range. This design enables a more efficient gasification of wood chips and wood waste. The secondary air that is driven into the gasification nozzle is preheated to a high temperature. This method prevents the flame from being chilled and therefore, any combustible substances are burnt to their maximum potential. The lower combustion chamber is equipped with fireproof concrete blocks where the process of burning is completed and any particles that fall down to this space are completely burnt. The ash deposits resulting from this process can be used as be used as high-quality cropland fertilizer in your garden. A cooling heat exchanger is placed in the boiler to protect it from overheating under blackout conditions. Should the boiler be overheated, a special safety valve opens to admit tap water into the heat exchanger. The water, after having captured the excess heat, is then discharged into the drain.

Heat Exchange Tubes feature turbulators (or retarders) for maximum heat exchange efficiency.

Technical parameters for boilers MAGA MA

Type of boiler		MA 15	MA 20	MA 25	MA 31	MA 40	MA 49	MA 80
Nominal output	BTU	50 869	68 280	85 350	105 834	136 560	167 289	273 120
Nominal output	kW	14.9	20	25	31	40	49	80
Fuel chamber capacity	dm3	80	100	125	140	140	190	300
Operating Draught	Pa	15	20	25	25	25	30	35
Width	mm	550	550	550	620	620	710	710
Depth	mm	830	980	980	980	980	980	1330
Height	mm	1100	1100	1190	1190	1270	1270	1370
Fuel chamber lenght	mm	400	550	550	550	550	550	700
Chimney ø	mm	160
Threaded connection		1 1/2"						2"
Weight	kg	310	350	380	430	510	550	810
Input	W	77
Efficiency	%	89
Fuel		dry wood with cca 20% water content
Informative consumption of wood in space meters for season		12-18	15-20	20-22	25-30	31-37	38-45	70-80

RETURN

Introduction | Menu | Contact | References