Biomass

Biomass is a quite general term for material derived from growing plants or from animal manure. Bioenergy refers to the technical systems through which biomass is produced or collected, converted and used as an energy source. A wide variety of conversion routes can be distinguished that produce a variety of energy carriers either in a solid, liquid or gaseous form. These energy carriers address all types of energy markets: heat, electricity and transportation.
Bioenergy already provides the majority of renewable energy worldwide and is considered to have the potential to provide a large fraction of world energy demand over the next century. At the same time, if biomass systems are managed properly, bioenergy will contribute to meet the requirement of reducing carbon emissions.

Biomass heating


Biomass heating has been a reliable option for heating for many over a long period of time.Resource rarefication and exponential growth of fossil fuel cost brings new life to this heating method.The combustible being from a renewable and local source. This heating method can represent a promising alternative to fossil fuels. The development of this market segment along with the reinforcement of strict environmental policies have also contributed to perfect the available technology and considerably increase the boiler's efficiencies.

OPERATION OF THE HEATING SYSTEM:

Put simply, these types of boiler use wood combustion to heat water that will then be distributed according to different heat load: radianting floors, domestic hot water, pool, spa, etc.Depending on models, these boilers can be installed outside, in the mechanical room, use log wood, wood pellets, wood chips etc. Some of models can even combine all these options in one single machine.There is actually two main type of wood and pellet boilers.

OUTDOOR BOILERS:

Installed outside, either in a shed or over a concrete pad, they allow operation of the boiler from outside the building with wood, pellets or wood chips. Once the boiler gets it's stored water to desired temperature, it can then be directed inside through underground insulated piping.This approach allows to keep all of the boiler's operation and materials outside of the main building.

INDOOR BOILERS:

Installed in the mechanical room, these boilers allow to burn wood and pellets from within the building.With a very high efficiency in the combustion process and respecting the latest EPA (environmental protection agency) standards, our line of boilers represent today the futur of biomass heating.

ADVANTAGES:

Wood and pellet boilers can take advantage of a renewable resource often available in large quantity in rural areas.This heating method therefore allows for important savings on heating costs over traditional fossil fuelsIt also provides a very interesting capacity to combine other renewable heating sources such as solar heating systems. Finally, new technologies allow for automatic operation and feeding of the boilers, which eliminate a previously negative aspect of this heating method.The different models being EPA certified also allows for home owners in urban areas to consider this heating source.

BIOMASS HEATING SYSTEM COMPONENTS:

Boilers: outdoor or indoor, this is the heat source for the system. The combusstion is generally done in the secondary combustion chamber and is called gazeification combustion. In this type of boilers, the wood gasification technology provides combustion at very high temperatures and provides much better efficiency and fewer emissions compared to traditional wood boilers.

Underground piping

For outdoor systems, a double, insulated pex piping line has to be used to bring the heated water to the storage and distribution system located inside the building. The choice of quality insulated piping is very important to limit the tremendous amount of heat loss that can happen in frozen ground between the outdoor boiler and the building during winter months, therefore greatly reducing the system efficiency.

Storage or Buffer tank

Once heated, the glycol-water must then be stored ina tank before being distributed. The buffer tank is therefore a very important part of the system as it allows a buffer zone between the the heat production, that generally happens during the day and the heat distribution, that generally happens later in the evening and at night during the winter. The buffer tanks also allow for autonomy between burns and streamline large temperature differences between loads.Finally the buffer will also allow for the integration of different input and outputs to the system: electrical boilers and solar heating systems can be added to add heat to the system and domestic hot water and pool/ spas can be heated from the buffer tank as well…

Heat Distribution

From the storage tank, we head towards the more traditional distribution system.

Three figures in favour of biomass energy in Armenia:

The energy produced out of own sources is beneficial for several reasons: it reduces the dependence on imports, enhances the country energy security, has lower costs, enables the development of new businesses and creation of new jobs. Moreover, it reduces the GHG emissions and air pollution.
Electricity tariff in Armenia for power generated from biomass is 40.542 AMD kW/h, VAT excluded.