Page 10 - National Poultry Newspaper

Mist cooling solutions for piggeries and poultry sheds
OZMIST is an Austral- ian company based in Wangaratta, northeast Victoria.
Since 1999 we have spe- cialised in the manufac- ture and supply of high- pressure mist cooling solutions.
Misting systems are ideal for cooling pigger- ies and poultry sheds and have been used for over 40 years. No area is too big, running costs are very low and installation is relative- ly quick simple as is ongo- ing maintenance.
Misting systems use the basic principle of evapo- rative cooling to reduce inside temperatures by up to 10C in a wide range of environments.
The Ozmist system comprises a high-pressure pump module, nylon dis- tribution lines and either lengths of pre-cut and ma-
chined 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 1000psi producing ultra-fine drop- lets averaging 10 mi- crons in size when forced through the ultra-fine misting nozzles.
The mist ‘flash evapo- rates’ and cooling is achieved without wetness accumulating on the ani- mals, floors, equipment and people.
A typical piggery mist- ing 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 1200mm 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.
Misting lines are spaced out across the width of the shed at about 6m in- tervals.
For example, an 18m- wide shed would have three mist lines.
This ensures a compre- hensive coverage of the shed without ‘hot spots’.
Mist fans are another option to provide extreme- ly 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. How do Ozmist systems work?
As the temperature inside the shed rises above 28C, the mist pump is switched on, either by a thermostat controller or in some cases 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 en- sures an even spread of temperatures from the mist lines down to ground level without any mechan- ical circulation.
To avoid the risk of the humidity rising to unac- ceptable 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 low- ering the curtains 500mm would be a good start.
The idea is to get the mist to evaporate and do its job without ‘clouding’ inside the shed.
If the mist clouds up inside the shed you will need to open the cur- tains a little more, and if it evaporates too quickly you should reduce the opening to get the most from the system.
Water filtration is criti- cal to the system’s per- formance.
Ozmist has a range of products to ensure the system operates with a
minimum of fuss and dis- ruption.
Details can be found fol- lowing.
Our equipment
Ozmist manufactures and stocks the largest range of quality misting equipment in Australia.
We keep a large stock holding all year round and dispatch custom build sys- tems in under two weeks.
Following is a brief out- line of our main piggery- related products.
Pump modules
Built by Ozmist and sup- plied in a stainless steel cabinet, pump modules are available with single and three-phase motors.
We also have inverter models that have distinct advantages when operat- ing more than one shed.
Our pumps are equipped with inlet solenoid valves to control incoming wa- ter, a low-pressure switch that registers water flow and stops the pump if the flow and pressure drops outside its range, a high- pressure industrial pump featuring a cast brass head and ceramic pistons.
Coupled to a heavy-du- ty motor, we have what we believe to be the most reliable pump on the market.
The internal components of the pump are machined from stainless steel and ceramic and can be rebuilt multiple times.
Modules also have twin 10” water filters fitted to the rear of the cabinet.
Five-micron and 10-mi- cron sediment cartridges are included.
Carefree Water Condi- tioner
Essential if operating
on bore, dam or channel water.
The Carefree unit has proven itself beyond doubt in helping to keep misting nozzles clear of calcium and other minerals that can build up and cause blockages.
C50 Trimline Bag Filters
Essential on systems us- ing dam, channel or bore water.
The C50 has a remov- able, washable filter bag.
Filtering with a C50 helps protect and add lon- gevity to the 10” cartridge filters on the back of the pump module. Thermostats/humidis- tats/timers
Digital displays and ful- ly programmable to con- trol your misting system.
The Ozmist pump mod- ule may also be controlled by an existing controller that sends a 240V signal. Dosing Modules
To combat insects and for aerial disinfection.
Designed as an add- on to an Ozmist pump module, the Dosing Mod- ule dispenses measured amounts of water-soluble products into the water supply before the pump.
An inbuilt timer is pro- grammed to start and stop at preset intervals for pre- set periods of time.
The enclosure has all the plumbing and non-return valves plumbed into the dosing pump and the tim- er wired to a plug ready to go.
Quick Fit misting lines
These are fabricated from 304-grade stainless steel tube.
For ease of shipping and installation the tubing is
☛ continued P11
WEBSITE: WWW.AUSAGSERVICES.COM.AU PHONE: 07 3829 3242 EMAIL: PETER@AUSAGSERVICES.COM.AU
Page 10 – National Poultry Newspaper, November 2018
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