Design
Design livestock ventilation right the first time
Under-sized systems show up as heat stress and bad air; over-sized systems as draught and wasted energy. StaldVent sizes the system on documented data – before components are ordered.
The problem
What does a wrongly sized system cost?
Too little capacity means heat stress, poor air quality and lost production in summer. Too much means draught, unnecessary heating and an investment that never pays back. And a system without documentation means arguments with the client, the developer and the authorities when the climate fails to deliver. Rules of thumb and inherited spreadsheets don’t catch it – they don’t calculate your specific building, herd and climate.
The method
Ceiling inlets and Spiraflex heating pipes – components with documented performance data
From animal heat production to the system’s operating point
The animals
Heat, moisture and CO2 production calculated with the internationally recognised CIGR models (1984 and 2002) from species, weight, numbers and feeding level – not a fixed figure per animal.
The building
Heat loss is calculated from geometry and U-values, and the climate analysis sets design outdoor temperatures as percentiles of local weather data – neither under- nor over-sized.
The system
Inlets and exhaust units are chosen with documented pressure/performance data, and the ventilation diagram shows the real operating point of the complete system.
The operating point – in black and white: In a published example, a system with 18 inlets and 4 exhaust units delivered 23,500 m³/h at −14.7 Pa – calculated before it was built. That is the kind of documentation that closes discussions: with the client, the developer and the authorities.
System types
What can be designed in StaldVent
Mechanical ventilation
Negative-pressure systems with wall, ceiling or diffuse air inlets.
Natural ventilation
Controlled natural ventilation – including open and uninsulated buildings.
Tunnel and combi
Tunnel and combi-tunnel ventilation with cooling for hot climate zones.
Point and central exhaust
Combined systems with ducts, pressure loss and control strategy.
Emergency ventilation
Natural-draft air exchange at power failure – with temperature curves as documentation.
Heating and cooling
Pipe systems, spray/PAD cooling, mechanical cooling and geothermal heat exchangers.
Who uses it
Two sides of the same calculation
Follow a manual added link
Manufacturers and suppliers
Calculate with your own component data and attach independent documentation to the quotation – it wins projects when clients compare bids.
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Consultants and developers
Set verifiable performance requirements in the tender, and check the supplier’s proposal before the contract is signed.
Frequently asked questions
Can StaldVent handle natural ventilation?
Yes – the program has supported both mechanically and naturally ventilated buildings from the start, including open buildings.
What about emergency ventilation?
StaldVent calculates the natural-draft air exchange through the chosen components and shows indoor temperature as a function of outdoor temperature – documentation that the emergency capacity is sufficient.
Does it handle tunnel ventilation for hot climates?
Yes, including spray/PAD and mechanical cooling, simulated with hourly weather data for the actual location.
Get your next project verified
Book a free demo, or start with a no-obligation talk about your projects.