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Exhaust air chimneys
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Exhaust air chimneys for efficient and optimised air extraction

Exhaust air chimneys: the right solution for every type of housing! Big Dutchman offers an extensive product range of exhaust air chimneys and corresponding chimney fans to ensure that exhaust air extraction is ideally matched to the animals’ needs. Thanks to the flowoptimised chimneys, the fan’s air flow rate improves, making the exhaust air volume flow especially efficient. The fans used in the chimneys, with sickle-shaped blades, are of excellent quality. The blades are made of aluminium in a moulded die-casting process and are, therefore, proof against severely cold conditions and...

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➊ iffuser: increases the air flow rate (Venturi D effect) ➋ fficient rain run-off E ➌ oof duct: connects the cone and the roof R ➍ abyrinth seal: prevents water from entering L through the roof ➎ uilt-in chimney fan: saves power, is B resistant to pressure, produces little noise ➏ oof sheet: is available with different R profiles ➐ xhaust air pipe: can be extended E ➑ utterfly valve: closes off the chimney and B reduces the airflow in a speed-controlled system Because the individual chimney components can be combined very flexibly, many different requirements can be met. 4 olour selection:...

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For a significantly increased working range of the chimney The guide vane is simply screwed tightly to the exhaust air chimney, right above the fan. The exhaust air jet is concentrated by deviating the radial and circular air flow With guide vane control components. This leads to a signifi canty increased working range of the l chimney. The guide vane can be retrofitted easily. ADVANTAGES 4 p to 80 per cent increased working u range of the chimney; 4 nly minimal decrease (approx. 3 per o cent) of the chimney’s air flow rate; 4 o chimney extension required, i.e. no n storm bracing and no...

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The exhaust air control principle for stepless ventilation MultiStep combines stepless control and on/ off group control. The benefit: stepless ventilation that optimally meets the livestock’s needs. The entire ventilation system is more pressure-stable and less susceptible to wind. The climate computer controls just one exhaust air chimney steplessly from 0 to 100 per cent and only starts up additional chimneys at full capacity (on/off method) when required. The CL 74V actuator is used to control one or two exhaust air chimneys steplessly. If more than two chimneys are to be controlled...

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BD exhaust air chimneys VC With different pipe diameters The BD exhaust air chimneys VC are available with several different diameters and can, therefore, be easily adapted to any ventilation system and spacing of roof trusses. They are made of 30 mm thick polyurethane pipes coated with smooth, glass-fibre reinforced polyester. This means that all VC chimneys are well-insulated, condensation is prevented and noise is reduced. The chimney pipes are delivered in halves (VC) and are assembled on ➊ iffuser: increases the air flow rate (Venturi D effect) ➋ torm bracing S ➌ Exhaust air pipe: is...

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Centralised exhaust air extraction To bundle the sources of emission Reducing emissions from livestock houses will become increasingly important in the future. In some countries, authorities already require that the exhaust air be extracted at one central point (bundled), and that this point of exit be installed at a height of no less than 10 metres. A bundled emission system works like a large chimney with a stable airflow. The BD exhaust air chimney VC 920 is a good choice here: 4 ery high air flow rates; v 4 xhaust air pipe made of two high-density e polyurethane foam half pipes for...

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Technical data of the most important built-in chimney fans Description details FF 063-6ET FF = fan with sickle-shaped blades 063 = impeller diameter 6 = 6-pole E/D = single-phase/three-phase T = chimney fan FF 080-ZIT FF = fan with sickle-shaped blades 080 = impeller diameter Z = 10-pole I = ECblue (single-phase) T = chimney fan We recommend using three-phase fans or ECblue fans. They are more resistant to pressure and more efficient than single-phase fans. The indicated values are based on a mains frequency of 50 Hz. &iq Dutchman. Europe, Middle East & Africa: Big Dutchman International...

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