Swine Barn Ventilation

Ventilation for animals that cannot sweat, in buildings sitting over slurry pits that release hydrogen sulphide as well as ammonia — a harsher gas environment than any poultry house.

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  • 5equipment groups

WhatDifferent rooms, different targets

A swine operation is several climates under one roof. Farrowing rooms need a compromise: around 20 °C for the sow with a heated creep area near 30 °C for the piglets. Nursery rooms run warm and drop as pigs grow. Finishing barns need the most cooling, because pigs at market weight generate substantial heat and cannot sweat to shed it.

WhoWho buys it

Integrated pork producers, independent finishing operations, farrow-to-wean units, and the barn construction and retrofit contractors serving them.

WhyWhy the pit changes everything

Most swine barns sit over a slurry pit, and that pit releases hydrogen sulphide as well as ammonia — a gas that is both corrosive and acutely dangerous when agitation releases it in quantity. Pit ventilation therefore runs continuously and is not simply part of the room extract. Equipment mounted in or near the pit airstream faces the most aggressive environment in agricultural ventilation.

HowTwo extract paths and zoned heat

Design pit extract and room extract as separate paths, with pit ventilation running continuously to keep gases moving away from the animal space. Size room ventilation by growth stage rather than by building volume. Provide zoned heating rather than heating whole rooms — a heated creep mat lets the room run at the sow’s temperature while piglets get theirs. And specify materials for hydrogen sulphide, not merely for ammonia: it is the more aggressive of the two.

Equipment this application needs

Exhaust Fans Pit & room extract Exhaust Fans134 Continuous pit ventilation plus staged room extract, on separate paths. Axial Flow Fans Tunnel cooling Axial Flow Fans672 Finishing barns in hot weather — pigs cannot sweat, so air velocity does the work. Air Coolers Evaporative inlet cooling Air Coolers115 Extends the usable range in dry climates before heat stress cuts feed intake. Industrial Heating Equipment Zone & creep heating Industrial Heating Equipment63 Heating the piglet zone rather than the whole room is both better for the sow and far cheaper. Ventilation Fan Parts Corrosion-exposed spares Ventilation Fan Parts261 Shutters, motors and bearings in pit airstreams are consumables here.

What to check before you order

Corrosion Resistant 260
Hydrogen sulphide as well as ammonia — materially more aggressive than a poultry house.
IP55 / IP68 301
Sealed against washdown and the damp pit environment.
Industrial Grade 1,600
Continuous duty in the worst gas environment in livestock housing.
Variable Speed 106
Stage ventilation smoothly across growth phases rather than cycling.
380V 2,095
Three-phase for barn-scale fan banks.

Products for this application

Questions buyers ask

Why does a swine barn need separate pit ventilation?
Because the slurry pit releases hydrogen sulphide and ammonia continuously, and those gases must be drawn away from the animal space rather than through it. Pit extract runs continuously on its own path; relying on room extract alone pulls pit gases up through the slats and into the air the animals and workers breathe.
What temperature should a farrowing room be?
It is a deliberate compromise: roughly 20 °C suits the sow, while newborn piglets need close to 30 °C. Rather than splitting the difference — which suits neither — the room runs at the sow’s temperature and the piglets get a separately heated creep area. Heating the whole room to piglet temperature would overheat the sow and waste a great deal of energy.
Why do finishing pigs need so much cooling?
Pigs cannot sweat, so they shed heat by radiation, conduction to cool surfaces, and air movement. At market weight they produce a lot of metabolic heat, and above roughly 25 °C feed intake and growth fall away. Air velocity over the animals is the practical tool, which is why finishing barns use tunnel ventilation.

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