Fail-safe air inlets for pig and poultry houses
German turnkey stables producer Hölscher + Leuschner presented a novel type of air inlet for pig and poultry housing at the recent edition of EuroTier.
The 'VRV Air', designed to be fail-safe and maintenance-free, is supposed to work even in the case of a power shutdown. Key are three elements:
- Adequate sizing of the inlets, so that sufficient natural ventilation of the building is ensured in the event of a power failure.
- The regulating units for the ventilation elements in normal operation at the same time are also the ventilation units in emergency mode, so that a lack of functionality would be noticed immediately by the everyday use of these regulation untis. In normal operation a defective functionality does not cause any damage, but is directly communicated by a system error message. Any further maintenance is therfore not necessary.
- Accurate control of the air inlet velocity to ensure constant climate in the compartment without the occurrence of drafts. This is particularly important because the air inlets have a total of large cross-sections and therefore exact positioning and precise control of the depression as indirect parameter for air inlet velocity are essential.
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