Barn cooling and humidity control.
High-pressure misting (dry cooling) for dairy barns, pig and poultry housing and beef cattle. An in-barn temperature drop of 5–16 °C, a lower heat-stress index (THI), higher yield, better fertility and up to 70% less mortality during heat waves. The systems comply with animal-welfare and organic-farming requirements. On veterinary advice, water sterilisation with a UV steriliser is mandatory.
Barn cooling and water misting systems in Slovenia — cooling dairy cows, pigs and poultry and reducing animal heat stress
A hot barn is an expensive barn.
Animals feel Slovenian heat waves even more than people do. Dairy cows, fattening pigs and poultry are genetically optimised for high output, which means a lot of metabolic heat the body has to release. When the outdoor temperature rises and humidity suppresses evaporative cooling through the skin and airways, the animal quickly enters heat stress.
Heat-stress index (THI)
THI (Temperature-Humidity Index) is the standard parameter for animal load. In dairy cows THI 68 is the onset threshold of stress, THI 72 means a drop in milk yield and THI 80 a serious health risk. In the Slovenian climate, THI 72 in barns is usually exceeded already at 24 °C outdoor temperature.
The costs you don't see
During a heat wave a dairy cow uses up to 30% more feed for maintenance, and milk yield falls by 10–15%. In pigs, daily gain in summer can be a tenth lower than in winter and feed conversion worsens. In broilers, one severe heat wave can mean a loss of 5–10% of the flock in 24 hours.
Welfare and organic farming
A controlled barn microclimate means less heat stress, better fertility and lower mortality. The system uses only water and electricity — no chemicals, in line with animal welfare and organic farming (EU 2018/848).
Five target groups.
Misting systems adapt to the type of animal, stocking density and the barn's ventilation concept. The descriptions below are general guidance.
Dairy cows (Holstein, Simmental)
The system is installed above the lying areas, feed alleys, the waiting area before the parlour and in front of the milking robot; for the best effect, cooling the whole barn is recommended. High-pressure nozzles with 30 μm openings and a flow of 0.132 L/min at 98 bar are used.
Show morePig farming (fatteners, breeding sows)
In pigs, temperature control is extremely important, as they cannot cool themselves effectively by sweating and are therefore very sensitive to heat stress.
Show morePoultry (broilers, laying hens)
A combination of a ventilation tunnel and high-pressure misting in the incoming air is an effective alternative to a pad-cooling system.
Show moreHorses, goats, sheep, game and zoos
Misting is also very useful in smaller and more varied facilities, such as private stables, riding schools, goat and sheep buildings, game farms and zoos.
Show moreGreenhouses, seedling propagation and cold stores
In greenhouses, seedling propagation and cold stores, high-pressure misting is a dual tool: adiabatic cooling lowers the temperature, while precise control of relative humidity creates an optimal microclimate for growth and storage.
Show more
Adiabatic cooling and humidity control.
We sell exclusively adiabatic cooling with humidity control. High pressure (100 bar) disperses water into droplets of about 15 μm — so-called dry fog — that evaporates in milliseconds. As it evaporates, each litre of water removes about 0.7 kWh of heat from the air, so the barn temperature drops by 5–16 °C while surfaces, litter and animals stay dry. A relative-humidity and temperature sensor keeps the microclimate in the optimal window and prevents over-wetting.
Adiabatic cooling
High-pressure nozzles at 100 bar create droplets of about 15 μm that evaporate completely. Each evaporated litre of water removes heat from the air — the barn temperature drops by 5–16 °C while surfaces stay dry.
Humidity control
A relative-humidity and temperature sensor controls the on/off switching of the misting. The system continuously adapts to the weather and keeps humidity in a safe window so the litter stays dry.
Benefits of dry fog
The fine fog binds dust and ammonia, reduces the presence of flies and insects and improves air quality. Only water and electricity — no chemicals, in line with animal welfare and organic farming.
Up to 50% co-financing.
In Slovenia, water-misting systems are eligible for co-financing under CAP 2023–2027 measures — mainly via the M04 – Investments in physical assets intervention (improving animal welfare and resource efficiency).
Rates and conditions
Depending on farm size, area (less-favoured areas, young farmer) and type of investment, the co-financing rate is usually between 30 and 50%, and in some cases more. An investment in barn cooling can be claimed as part of a wider barn modernisation or on its own, on condition of improved animal welfare.
Application support
We prepare the technical documentation, equipment list, effect estimate and bill of works you need for the application, and guide you through the call deadlines and conditions. With the documentation and the application we help you from the site visit to submission.
Current public calls and submission (electronically via ARSKTRP): skp.si/javni-razpisi.
A typical system.
For a 1,000 m² barn (e.g. 100 dairy cows or 1,500 fatteners). Final values are determined after a site visit.
| Typical barn | 1,000 m², 100 cows / 1,500 fatteners |
|---|---|
| Number of nozzles | 80–140 (lines above lying areas and feeding) |
| Nozzle — cows | Stainless, 30 μm, 0.12 L/min |
| Nozzle — pigs | Stainless, 15 μm, 0.05 L/min |
| Total flow | 4–10 L/min |
| Pump | STOM 1.5–3 kW, 100 bar |
| Filtration | 50 μm + 1 μm + UV |
| Control | THI sensor · interval · manual switch |
| Pipe | 11 mm multilayer, anti-corrosion |
| Compliance | CE · MD · animal welfare · organic farming (EU 2018/848) |
Expected effects
- In-barn temperature drop of 5–10 °C on hot days
- Dairy cows: +1 to +2 L of milk / cow / day in season
- Fattening pigs: +5 to +12% daily gain (FCR better by 0.2–0.4)
- Poultry: −40 to −70% mortality during heat waves
- Better fertility of breeding sows and cows
- Binding of dust and ammonia — better air quality
"After the first summer with misting, daily milk yield on July days stayed at June levels. The difference is measurable in the tank."
Dairy farm · Štajerska · 2024Farmers' questions.
At what temperature do dairy cows enter heat stress?
Dairy cows (Holstein, Simmental) experience the first heat stress already at THI > 68, which in Slovenia corresponds to an outdoor temperature of about 22 °C at 50% humidity. At THI > 78 (~28 °C) the drop in milk yield reaches 10–15% and fertility falls by 30–40%.
Does water misting make the barn too wet?
No, if the system is correctly dimensioned. High-pressure misting at 100 bar creates 15–20 μm droplets that evaporate completely. For pig and poultry housing, where litter moisture matters, we use lower flow rates controlled by a humidity sensor.
How much does yield increase after installing the system?
Dairy farms: +1 to +2 L of milk per cow per day in summer. Pig fattening: +5 to +12% daily gain on hot days. Poultry (broilers): mortality reduced by 40–70% during heat waves, with more even flock weight.
Is the system suitable for organic farming?
Yes. The system uses only mains water and electricity for the pump. No chemicals, no additives. Compliant with organic-farming requirements (EU Regulation 2018/848) and animal-welfare standards.
What is the ROI for a pig barn of 1,000 fatteners?
A typical system for a 1,000-fattener barn ranges between EUR 8,000 and 14,000 + VAT. ROI in 2–3 years based on improved gain, lower mortality and better FCR over the summer months.
Are subsidies available?
Yes. The systems are eligible for co-financing under CAP 2023–2027 measures and the Rural Development Programme. We prepare the technical documentation for the application.
What water can be used?
Mains drinking water or suitably treated water from your own well (after analysis). The system has factory-fitted pre-filtration of 50 μm + a 1 μm fine filter + UV sterilisation.
sTorks — misting systems from Kranj.
sTorks has designed, manufactured and installed high-pressure misting systems since 2005. For agriculture we supply adiabatic cooling and humidity control for barns, poultry and pig farms, greenhouses and cold stores — the same technology stands behind the cooling of hospitality terraces, parks and industrial buildings in our family of brands.
Send us your location.
Tell us what you are building — terrace, barn, square, promenade, hall, hotel, restaurant. We reply with a proposal, timeline and technical drawing within a few days.






























