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

up to −16 °C
In the barn
+2 L
Milk per cow / day
+10 %
Fattener gain
100 bar
System pressure
In brief
What it is
A high-pressure misting system for adiabatic cooling and humidity control in agricultural buildings. Water at 100 bar is dispersed into a ~15 μm dry fog that evaporates and cools the air by 5–16 °C — without wetting animals, litter or equipment.
Who it's for
Farms and breeders: dairy and beef barns, pig and poultry farms, horses and small livestock, plus greenhouses, seedling propagation and cold stores.
What it solves
Heat stress (THI), falling milk yield and gain, higher mortality during heat waves, dry air, dust and ammonia, and poorer working conditions in the building.
Where
Slovenia and neighbouring markets (Austria, Croatia, Italy). Design, manufacture and installation from Kranj.
Next step
Send a floor plan and the type of operation — we prepare a nozzle-layout proposal, an effect estimate and a price, and help with the subsidy application. Start an enquiry →
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.

THI

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.

ECO

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).

Applications

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.

  1. Dairy cows (Holstein, Simmental)

    High-pressure misting cooling a dairy barn — Pragersko
    Misting above dairy cow lying areas during a heat wave — Ptuj
    Water misting and fan cooling a dairy barn — Ptuj
    Misting cooling at the exit of a dairy barn — Ptuj
    Fog above dairy cow lying cubicles — Ptuj
    Misting system above the feed table in a dairy barn — Brežice
    Misting along the alley in a dairy barn — Brežice
    Adiabatic dry-fog cooling of a dairy barn — Pragersko
    Nozzle line above the dairy cow feed table — Bobovek near Kranj
    High-pressure misting in a two-bay cattle barn — Murska Sobota
    Water misting above dairy cow lying areas — Šenčur near Kranj
    Dairy barn cooling with misting — Moosburg near Klagenfurt, Austria
    Fog above the feed alley of a dairy barn — Rače
    High-pressure misting in a modern dairy barn — Villach, Austria
  2. Pig farming (fatteners, breeding sows)

    High-pressure misting cooling a pig barn above fattening sectors
    Misting in a pig farrowing house for heat-stress control — Cirkovce
    High-pressure misting above breeding sow pens
    Nozzle lines for misting above pig sectors
  3. Poultry (broilers, laying hens)

    High-pressure misting cooling a turkey barn during a heat wave
    Misting above a turkey flock to reduce heat stress
    Water misting in a multi-tier laying-hen house
    Dry fog above broilers at the air-inlet openings
    Nozzle line for misting along a broiler house
    Cooling a broiler house with fine misting
    Misting in the incoming air of a broiler house (pad-cooling)
  4. Horses, goats, sheep, game and zoos

    High-pressure misting cooling a horse in a box
    Misting cooling a game enclosure at a zoo
    Misting system cooling an elephant at a zoo
  5. Greenhouses, seedling propagation and cold stores

    High-pressure misting for cooling and humidity control in a greenhouse
    Fine fog above plants in a glasshouse — adiabatic cooling and humidification
Technology

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.

A

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.

B

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.

C

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.

Subsidies

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.

Specifications

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 barn1,000 m², 100 cows / 1,500 fatteners
Number of nozzles80–140 (lines above lying areas and feeding)
Nozzle — cowsStainless, 30 μm, 0.12 L/min
Nozzle — pigsStainless, 15 μm, 0.05 L/min
Total flow4–10 L/min
PumpSTOM 1.5–3 kW, 100 bar
Filtration50 μm + 1 μm + UV
ControlTHI sensor · interval · manual switch
Pipe11 mm multilayer, anti-corrosion
ComplianceCE · 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 · 2024
Frequently asked questions

Farmers' 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.

Installations
About

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.

Brand
sTorks (sTorks atelje)
Headquarters
Kranj, Slovenia
Area served
Slovenia · Austria · Croatia · Italy
Services
High-pressure adiabatic cooling, humidity control, dust and odour binding, design, manufacture, installation and maintenance of systems
Experience
Since 2005 · installations across Slovenia and neighbouring countries (see the map)
Related brands
storks.si · mist.storks.si · storksarch.com · horeca.storks.si
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