Wood chip boilers
Efficiency, sustainability, and cost-effectiveness – these qualities are the hallmark of our wood chip boilers. We are proud that Hargassner has been a pioneer in the field of wood chip boilers. Our Eco-HK wood chip heating system is the result of decades of experience and in-depth expertise in this heating technology. The Eco-HK systems have been awarded the “Energie-Genie” Innovation Award, highlighting our unwavering commitment to innovation, quality, and excellence in the heating industry.
Eco-HK
This is what makes it unique
The wood chip boilers from the Eco series are the right choice for all applications that already require a medium to higher heating output. In cascade, i.e. up to six boilers connected in series, an output of up to 2 MW is possible. This is heating technology equipped with many energy-saving extras, so that heat can be produced with reduced emissions and at low cost when energy demands are higher. The “Ecos” stand for effective and efficient heating.
Energy-saving
Eco operation
Speed-controlled EC exhaust fan
with negative pressure control
Hargassner uses energy-saving EC exhaust fans in its Eco-HK boilers. The crucial advantage of this GreenTech EC technology is the electric speed control, which significantly reduces electricity consumption (up to 80% less electricity). The negative pressure unit constantly measures the pressure conditions in the combustion chamber. The Lambda Touchtronic uses this data to control the speed of the exhaust fan, thus keeping the negative pressure at an ideal level. This concept ensures combustion with the lowest possible emissions and therefore maximum efficiency.
Energy-saving fuel extraction
Thanks to a low drive output of just 0.18 kW (0.25 – 0.55 kW for 70 – 330 kW boilers) and a robust, high-efficiency spur gear, the fuel extraction system saves a huge amount of energy. Savings of up to 67% can be achieved here. With the excellent gear efficiency of over 90%, it clearly outperforms conventional worm gears.
Energy-saving ignition
Two ignition elements are installed in the Eco-HK 130 – 330 series. Thanks to the design of this ignition element, the power consumption has been reduced to just 300 watts (up to 1,000 watts less) and, at the same time, the efficiency of the ignition process has been increased.
- Energy savings of over 88%
- Smart ignition monitoring
- Silent operation
Convenient operation with different fuels
One boiler – three options
The rotary grates are positioned one behind the other with a “step” between them and can be moved independently of each other. As a result, pellets, various types of wood chips and even agricultural fuels such as miscanthus can be burned easily and conveniently.
Wood chips
Pellets
Miscanthus
Strong step grate
Closed grates in the combustion chamber with a high firebed – optimises the gasification process and minimises micro-dust emissions.
During the heating cycle, only the rear rotary grate is opened during the de-ash process. The ash falls down, the residual embers remain and enable further combustion of the newly extracted fuel.
The combustion chamber is cleaned completely before the boiler is restarted. Both grates open (rotate 360 °) and cold ashes and foreign bodies such as stones and nails are disposed of.
For fuel with a very low ash melting point, the rotary grate’s special “breaker function” will break the clinker.
The future of heating
Eco-HK
Fully refractory-lined combustion chamber
with standard recirculation
The refractory combustion chamber’s special storage effect guarantees high combustion temperatures (even for partial load), minimises the number of times the boiler has to be ignited and reduces emissions. Every Eco-HK has flue gas recirculation integrated as standard to combat ash clinkering caused by dry fuel or fuel with a low ash melting point. The residues can be disposed of via the ash extraction system without any problems, because the cooling of the firebed means that even low ash melting points of low-grade fuels are not yet reached.
Optimised cleaning
for high convenience
ALL heat exchanger tubes – including the first pass – are cleaned at regular intervals. The edges of the auger turbulators efficiently remove any fly ash residue from the boiler pipes and this drops straight onto the ash auger. Both the fly ash and the grate ash are transported into a fully integrated ash box by just one ash extraction auger. The residues are crushed as they are being transported and then compacted in the box, resulting in increased annual efficiency and a higher degree of cleaning convenience. With Eco-HK 20 – 230 kW, only one drive is required for heat exchanger cleaning and ash extraction.
Independent firebed
monitoring
Non-contact sensors monitor the height of the firebed, so the most efficient combustion condition is achieved.
Integrated touch control -
plug and play
The new Lambda Touchtronic meets every need. It is distinguished by an exceptional design and the fact that it is very easy to operate.
Lambda sensor
control
The lambda sensor integrated into the control unit detects the calorific value of the fuel and thus regulates the optimum fuel/air mixture.
More Advantages Eco-HK
- Simple touch menu navigation
- Sophisticated heat distribution
- Automatically adjusts to weather conditions
- Various options for controlling your heating system remotely, ranging from your living room to while you’re out (via the app)
- Can be connected to various smart home solutions
energy-saving and cost-cutting
Eco fuel extraction system from Hargassner
Thanks to a low drive output of just 0.18 kW/0.24 kW (for 70 – 330 kW: 0.24 – 0.38 kW) and a robust, high-efficiency spur gear, the fuel extraction system saves a huge amount of energy and therefore lowers electricity costs. You can save as much as 67% in electricity costs compared to those for conventional fuel extraction systems. With the excellent gear efficiency of over 90%, it clearly outperforms conventional worm gears. The new modular design ensures that the auger, along with its trough and removable cover, is easy to use.
Advantages Eco-HK fuel extraction system
- Hargassner spur gear
Lowest friction loss with highest efficiency above 90% - Modular design planning flexibility
- Maximum use of storage space due to low installation dimension
- Very low electricity consumption
- Quick and easy to install
- Cost-effective
- Sloping floor not needed
Drive systems compared
Hargassner spur gear set new standards in terms of efficiency and durability. Thanks to their innovative design and high-quality materials, they are characterised by minimal friction loss and above-average efficiency. These properties ensure energy-efficient and sustainable heating technology that is also robust and durable.
Worm gear
- High friction loss
- Low efficiency
Hargassner
Spur gear
- Low friction loss
- Maximum efficiency
- Durable
News, References, Events & more
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AwardsCompanyNews
Inclusion Award “Fliegender Fisch” for Hargassner
Hargassner receives inclusion award
AwardsCompanyNews
Timber Construction Award
for wooden parking deck
Hargassner’s new wooden parking deck wins timber construction award
