*Self-cleaning without using water
*Snow-free air intake
*Fresh air contribution all the way to the end of the barn
*Saving on fuel
*Better Bird growth
*Less ammonia in the barn; better health for the farmer
The principle of the heat exchanger is based on the transfer of heat by conduction. Heat must be transferred through a wall with the intend for heat recovery. With a Plettenburg heat exchanger it is possible to heat or cool 100% fresh outside air. This results in an optimal climate in the shed. The fresh outside air is heated by exhausted shed air aiming to get the highest efficiency on heat recovering. The fresh outside air passes through a packages of tubes and is heated by the exhausted warm shed air in cross flow or counter flow. The result is a conditioned fresh air with a temperature almost equal to the inside shed temperature. This conditioned air has also a lower humidity and has the maximum capacity to dry. The humid shed air containing CO2 and HN3 is not reused.
THE HEAT EXCHANGER IN OPERATION
The heat exchangers can be installed either inside or outside the barn. For both options the shape and dimensions were chosen carefully to get the optimal heat recovery. The centrifugal fan moves the outside air. The outside air passes through a stainless steel filter, through the inside of the plastic tubes towards the end of the heat exchanger. During its transportation through the system the air is heated or cooled. When the outside air needs to be heated, the axial flow fans exhaust the warm shed air along the outside of the plastic tubes. During the summer the hot outside air is cooled by means of sprinklers, which can spay (ground)water over the plastic tubes.
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