Big Dutchman offers a wide range of fresh air supply systems to ensure optimal provision of fresh air. Depending on structural conditions and special requirements – negative- or balanced-pressure ventilation – the following systems can be implemented:
Fresh air inlets for the wall; the flap is pulled open
Our wall inlets are made of shock-proof, recyclable, non-deformable, UV-stabilised plastic and can easily be cleaned with a high-pressure cleaner. The insulated inlet flap is kept in a closed position by rustproof* steel springs, thus sealing the building airtight.
The inlet flap opens through a downward pull. This allows the farmer to regulate the inlet opening very precisely in each season. As an example from the winter season: the cold, outside air enters the building, immediately combining with the warm, inside air. This process helps create a more comfortable climate for the birds and can easily be managed with a control set. This control set opens the fresh air inlets either all at once or individually.
* not applicable for inlets type B/F
BD wall inlets are very versatile and guarantee an optimum, non-centralised fresh air supply for negative-pressure ventilation.
All BD wall inlets can be opened individually, creating stable air jets, even with minimum ventilation.
The insulated and non-deformable inlet flap (with an integrated aluminium profile) seals the house airtight.
The pulling mechanism allows a very exact control of the inlet opening for a stable air circulation all the way to the centre of the house, and very even temperatures at simultaneous low heating requirements.
High-quality materials make for a long service life of the inlets: 15 years are not uncommon, but standard!
A high-pressure cleaner can be used without any concern.
Fresh air inlets for the ceiling; the flap is either pulled open or pulled closed.
Ceiling inlets are multi-purpose inlets specifically well-suited for installation into the ceiling with a roof slope of up to 15°. They are made of recyclable, shock-proof, non-deformable, UV-stabilised plastic. The fresh air enters the poultry house through the attic.
BD ceiling inlets are very versatile and supply fresh air through the attic for negative-pressure ventilation, in an optimum and non-centralised manner.
All BD ceiling inlets can be opened individually, creating stable air jets, even with minimum ventilation.
The insulated inlet flap seals the house airtight.
The pulling mechanism allows a very exact control of the inlet opening for a stable air circulation, and maintains an even temperature at simultaneous low heating requirements.
Even for large throwing ranges, the negative pressure level must not be very high (air ”sticks“ to the ceiling).
Fresh air chimney for negative- or balanced-pressure ventilation.
FAC 2 supplies fresh air from the roof with a high air rate. The fresh air distributor at the lower end of the chimney ensures that the entering air is distributed evenly inside the house. This creates a stable airflow even with minimum ventilation.
As an option, FAC 2 can be equipped with a fan inside the chimney. This fan pushes the fresh air drawn in by the chimney through the fresh air distributor and into the house to create a balanced pressure system. Such a system is especially recommended where no negative pressure can be created due to constantly open pop holes. FAC 2 is available in four diameters (650, 730, 820 and 920 mm).
Fresh air provided throughout the entire ceiling.
Fumus 2 is always equipped with a fan in the lower part of the chimney. This fan pushes the fresh air drawn in by the chimney through the fresh air distributor and into the house. The amount of air entering the barn is regulated by means of a butterfly valve above the fan. Depending on the position of the butterfly valve, anywhere between 100 percent fresh air (vertical position) and 100 percent recirculating air (horizontal position) enter the barn.
Between these positions, a certain amount of fresh air is mixed with the house air, which is drawn in through the 10 cm wide opening at the chimney. This means that, depending on the ventilation requirements, the barn can be supplied with fresh air, mixed air or recirculating air.
In case of minimum ventilation (during cold weather) Fumus 2 can also be operated with balanced pressure or slight positive pressure. Fumus 2 is available with the following diameters: 650, 730, 820 or 920 mm.
Fresh air supply over a large surface.
MultiVent 17 M with its large air performance can be used for additional summer ventilation or as inlet for tunnel ventilation. Air flow and air direction can be controlled easily.
The PerforMacs light trap has been optimised aerodynamically, reducing the air performance by only approx. 10 percent. The light trap segments are made of plastic which makes them extremely durable and easy to clean.
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