Wood gasification boiler BORMMER E TURBO with opposite DUO rotary combustion chamber

GASIFYING BOILERS BORMMER E TURBO

GASIFYING BOILERS

We offer environment-friendly wood-fired   boilers with a heat output capacity from 15 to 80 kW.

BORMMER E TURBO hot-water boilers are intended for heating homes (such as apartments, family houses, suites, townhouses) and smaller industrial buildings (manufacturing shop floors).

These boilers are designed exclusively to burn wood. Any dry wood such as chopped logs or wood chips with maximum length of 550 mm can be used as fuel for this type of boiler. It is also possible to use damp wood, however one has to count on a little extra fuel consumption. Untreated wood waste such as sawdust, splinters or small chips may also be used, but this type of fuel should at all times be combined with whole wood pieces. Logs with larger diameters can be used as well. If so done, the boiler’s rated output capacity will decrease and the period of burning will extend. A large wood storage bin will help replace and eliminate the most laborious operations associated with the preparation of wood fuel – i.e. the sawing and cutting of logs into pieces of an appropriate size. This practice will save not only physical exertion, but also time necessary for the work. Approximately 1-2 % of the amount of the wood burnt in a boiler will be deposited in the form of ash into the ash disposal area (which should therefore be cleaned once or twice a week). Taking into account the low emission of harmful substances, the operation of this type of boilers is a significant contribution to improving the environment.

 

BORMMER E TURBO – this is a well proven type of easy-to-use wood-gasifying boiler with very simple controls and clear instructions. These boilers are manufactured from steel boiler plates having a thickness of 6 - 8 mm (for the inner section) and 4 mm (for the outer sections).

 

 

The boiler shell is made from steel plates as a welded assembly. It consists of a fuel feed hopper, which at its bottom part is equipped with a fireproof tile block that comprises a longitudinal opening (nozzle) for exhausting the combustion products. There is an afterburning space located beneath the nozzle fitted with ceramic tile blocks. In the rear part of the boiler there is a vertical tube plate that, in its upper part, merges into a collecting duct where there is a firing valve. The collecting duct’s rear part is equipped with an exhaust socket for connecting the duct to the chimney. There is a fan located on the front side equipped with a clapper valve which automatically regulates the air flow into the fan.

 

The outside surface of the boiler body is thermally insulated with mineral wool inserted beneath sheet metal covers of the boiler’s outer shell. Both the primary and the secondary air flows are preheated and then distributed in a desired, ideal proportion to the boiler’s combustion chamber and to the nozzle.

Boiler Operation

In their method of burning, the BORMMER E TURBO boilers significantly differ from common solid fuel fired boilers. The process of burning is designed based on the principle of generator-based gasification reactor operating at very high temperatures (approx. 1100 ° C). The burning of woodgas is supported by a fan that drives the primary combustion air into the firebox and the secondary air into the nozzle. This combustion system is highly economic because it results in a fuel savings of about 40 percent. The operation of boilers places only minimal demands on human intervention as the semi-automatic controls require almost no manual steps to operate. The fuel hopper’s volume is large enough to encompass fuel for 8 to 12 hours of operation at a medium capacity output. Working at a reduced output, the boiler will continuously operate for as long as twentyfour hours.

THE ADVANTAGES OF THE USE OF WOOD GASIFICATION BOILERS  

 

- Wood Gasification with modern timeless design

- Highly efficient heat exchanger tube

- High efficiency of combustion to 90%

- Low fuel consumption

- Low emissions and ash production

- Width of the selected performance scale wood gasification boilers from 18 to 80 kW

- Combustion control with an electronic microprocessor control

- The pressure blower with pre-heated air to ensure a uniform and effective combustion and dust-free operation and also can be retrofitted with an optional blower. Thus the Bormmer wood gasification is prepared for all eventualities.

- Modulated speed of the fan from the wood gasifier

- Combustion of softwood and hardwood

- Large combustion chamber, which ensures a long burn time with a charge (refuel - 2 - 3 times in 24 hours)

Ability to feed with long pieces of wood -

- Minimum amount of ash from wood gasification principle

- Easy operation and cleaning

- Automatic shutdown after boiler fuel burn

- Automatic control of the heating valve when opening and closing the door

- Equipped with a safety heat exchanger (cooling coil) against overheating

- Quality boiler steel of 6 - 8 mm thickness

- Quality cast iron doors

- Fire-resistant reinforced concrete blocks, temperature resistance 1500°C.

- 5 year warranty on the boiler body and a conductor with return increase group mind.65 ° C. 

 

Especially with wood gasification Bormmer E Turbo is preheated to about 600 ° C> primary and secondary air supply, which is considered unique in this class.

 

BOILER OUTPUT CAPACITY REGULATION : MICROPROCESSOR-BASED METHOD

Boiler control Bormmer zPID. It controls the heating circulation pump (buffer loading pump), the hot water circulation pump and the fan. All information is conveyed by means of an LCD liquid crystal display to the user, whereby the operation is very easy.

The box is equipped with a PID software. The object of control is to examine the exhaust gas temperature and to keep at a level. In addition, the controller maintains a constant temperature in the boiler. In addition to the typical control probes contains a sensor that Flue gas temperature sensor.Dank a constant exhaust temperature is obtained.

The exhaust gas temperature is measured continuously. In the event of a significant rise in temperature, the fan speeds reduced if the temperature continues to rise, the fan is turned off 

Regulation Bormmer Boiler

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 50 % of its rated capacity.

 

 

 

BORMMER E TURBO - 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 85 - 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. These are accessorial equipment and components – must be ordered separately.

 

Also so-called combustion-product brake valves may be separately ordered for BORMMER E TURBO boilers. These brake valves are located in the pipe-wall heat exchanger. The brake valves provide a more efficient heat exchange and thus give a boiler a higher heating coefficient of performance.

Technical parameters boilers BORMMER E TURBO

GASIFYING BOILERS BORMMER E TURBO

Boiler Type Bormmer

 E Turbo

       18

         25

       40

     80

Boiler Klass

  EN 303-5

         3

         3

       3

       3

Power

   kW

     9 - 25

   12 - 32

   18 - 49

   32 - 80

Heating surface

 m 2

       2,2

       2,6

       3,9

     7,2

Fuel schafts

     dm3

     135

     155

     195

     340

Required schimney draft

     Pa

   15-25

   15-25

   15-25

   15-35

Boiler weight

     kg

     435

     475

     540

     700

Diameter exhaust throat

     mm

     150

     150

     150

   150

Boiler height

     mm

     1190

     1280

     1370

   1415

Boiler depth

     mm

     990

     990

     1060

   1250

Boiler width

     mm

     580

     580

     680

     715

The wolume of water in the boiler

       l

       81

       92

     107

     170

Water max. temperature

                                        

                                     95°C

Connection

 

Water Output

                                                6/4“      

     2“

Water Imput

                                                6/4“

     2“

Water filling

                                                 ½“

Cooling loop

                                                 ½“

Teperature safety limiter

                                              99°C

Boiler efficiency

                                            85-90 %

Max. noise level

     dB

       55

       55

       55

     55

 

Fuel wood

                                                                 

                                                                     Dry wood

                                                                 15 -17 MJ kg

                                                          max. humidity 20%

Wood consumption

     kg/ h

       6,1

       7,8

       11,5

     18,5

Max. wood leght

     mm

                           550  

   700

Diameter

     mm

                                70 - 200

Enclosure power

     IP

                                    21

Voltage

   V / Hz

                                 230/50

Fan power imput

     W

       57

       43

       83

     83

Burn time

     Std.

                               4 -12

Bormmer Homepage Deutsch
Wood gasification boiler BORMMER E TURBO
Bormmer Chaudières, chaudières à bois, chaudières à gazéification de bois Frensch

Bormmer ® Heiztechnik UG

Pfälzer Ring 1

68766 Hockenheim 

Tel. +49 (0) 6205-2328595

E-mail: info@bormmer.de

 

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