Air Heaters

NPA air heaters are designed to produce hot process air and are mainly used in grain or herb dryers. They are also used to heat large storage facilities, plastic tunnels, greenhouses, etc.

The machines are adapted to work with grain dryers, like, for example, Araj, Riela, Drzewicz, etc. They may be used wherever it is possible to use renewable fuels, often inutilely lost.

Air Heaters - BENEFITS

  • efficiency about 75%,
  • cheap fuel (straw, hay, etc.) 4 kg-straw = 1 liter of heating oil,
  • simple operation,
  • compact structure,
  • ecological straw burning.

Each boiler has a CE marking, the construction complies with the requirements of European Union Directives.

Sample pictures

Air heater – short characteristics

The NPA air heaters use a counter-current biomass combustion system with regulated and properly distributed air blowing, which allows for better parameters of the combustion process. This process takes place as follows: a fan that blows air into the furnace chamber, controlled by a microprocessor controller, sucks in air and delivers it to the furnace chamber where the charge is burnt.

The heat generated as a result of combustion is transferred to the air supplied by the blowing fan. The heated air can then be transferred to the receiver via the duct system. The air is heated in the exchangers directly from the heat generated during the burning of straw (without the use of an intermediary medium, e.g. oil or water). This design allows for greater efficiency of the devices and higher air temperatures. In order to obtain the optimal composition of exhaust gases, it is advisable to use seasoned straw with a moisture content of up to 15%.

NPA type air heaters are not subject to Technical Inspection and registration at the Technical Inspection Inspectorate.

WARNING!

Each heater has CE marking, the construction meets the requirements of European Union Directives. It is possible to produce heaters with parameters other than those listed above.

Fuel

The basic fuel for fueling NPA air heaters is pressed straw of four types of cereals and rapeseed with a moisture content of up to 15%, in the form of bales measuring fi1500x1200mm.

Burning straw with a higher moisture content will reduce thermal efficiency and accelerate the wear of the heater and chimney system. Burning straw after maturing for less than a year may accelerate corrosive wear of the heater. In addition, burning straw with a moisture content of more than 30% is unacceptable in terms of energy and economically unjustified.

Where necessary, wood waste and branches may be a substitute fuel.

Any questions?

If you are interested in the offer, please contact us. We will answer any questions you may have.

+48(58) 562-56-61

graso@graso.com.pl