Mist Cooling Solutions for Piggeries & Poultry Sheds
OZmist is an Australian company based in Wangaratta, north east Victoria. Since 1999 we have specialised in the manufacture and supply of high pressure mist cooling solutions.
Livestock misting systems are ideal for cooling piggeries and poultry sheds and have been used for over 40 years. No area is too big, running costs are very low and installation is relatively quick simple, as is ongoing maintenance.
How an OZmist Misting System Reduces the Heat!
As the temperature inside the shed rises above 28°C the mist pump is switched on, either by a thermostat controller or the existing shed controller.
As the mist leaves the nozzle it evaporates and absorbs the latent heat in the air which in turn cools the hot air. The cooler air falls to ground level, displacing the hot air. This continuous cycle of natural convection ensures an even spread of temperatures from the mist lines down to ground level without any mechanical circulation.
To avoid the risk of the humidity rising to unacceptable levels the side curtains will need to be lowered on either side of the shed. How far the curtains need to dropped differs from shed to shed but lowering the curtains 500mm would be a good start.
The idea is to get the mist to evaporate and do its job without ‘clouding’ up inside the shed. If the mist ‘clouds up’ inside the shed you will need to open the curtains a little more; if it evaporates too quickly you should reduce the opening to get the most from the system.
Water Filtration is critical to the systems performance.
OZmist has a range of products to ensure that the livestock misting system operates with minimum fuss and disruption.
How It Works!
Misting systems use the basic principle of evaporative cooling to reduce inside temperatures by up to 10°C in a wide range of environments.
The OZmist system comprises a high pressure pump module, nylon distribution lines and either lengths of pre-cut and machined stainless steel tube or stainless steel misting rings which are fitted to the face of high velocity fans.
The high pressure pump module pressurises the supplied water to 1,000 psi producing ultra-fine droplets averaging 10 microns in size when forced through the ultra-fine misting nozzles. The mist “flash evaporates” and cooling is achieved without wetness accumulating on the animals, floors, equipment or people.
A typical piggery misting system consists of stainless steel misting lines being run from one end of the shed to the other end. Mist lines are made up of 1,200mm lengths of stainless steel tube with a machined groove on each end.
Nozzle unions join the tubes and nozzles hand screw into these fittings. The nozzles alternate from side to side along the length of the tube. The tube is cabled tied to stainless steel cable or to the underside of the roof trusses.
The misting lines are spaced out across the width of the shed at around 6 meter intervals. For example an 18 meter wide shed would have 3 mist lines. This ensures a comprehensive coverage of the shed without ‘hot spots’.
Livestock misting fans are another option to provide extremely good cooling in large spaces. Stainless steel misting rings with six nozzles are cable tied to the face of high velocity fans and connected to our high pressure pump modules.