NZ Dairy Autumn 2021

| 115 nz dairy DAIRY SERVICES » Tetley-Jones Agriculture pressure on rural contractors Tractor and plough unit. Cultivation and ground preparation are an important part of the operation. COOLING TOWERS Cooltek Ltd IMPORTERS OF COOLING EQUIPMENT Phone (09) 633 0071 www.cooltek.co.nz info@machinetech.co.nz Cooltek Ltd - a division of Machinetech Ltd CHEAPEST and MOST EFFICIENT method of taking the heat out of water. Ex-store Penrose, Auckland. www.cooltek.co.nz From $2,600 + GST. Machinetech have been supplying cooling towers to various industries for more than 20 years and farm dairy sheds for about 15 years. Cooling towers are about the cheapest way of taking heat out of the water, i.e. evaporative cooling. Running a small fan motor, moving huge volumes of air against sprayed water running down the corrugated bring the water temperature down to the ambient air temperature in one single pass. In milking sheds, after the water has been through the plate cooler, it is sent to the wash down tank until full and then through the tower and back to the storage tank. A down sized ice bank, or chiller system is then used to reduce the water temperature to 5-6ºC to get the milk down to 6ºC or less. The cooling tower is large but cheap to buy, and operate, and will enable the chiller system to be smaller or used less, saving purchase or replace- ment cost, maintenance cost and actual running cost. Often, water COOLING TOWER - SAVINGS from other sources such as town or river supply is run through the tower before being introduced to the cold water storage tank. During the night when the air is at its coolest, the water is circulated through the cooling tower back to the tank so that you can start your milking session with pre-cooled water. Winter is even better with lower air temperature, as the water can be down to less than 10ºC to start with. These towers enable your water to be recirculated to save water usage and have proven themselves with many operators who have multiple dairy sheds installing a tower at each site and one having won awards for his energy and environmental Towers is available ex-stock. Typical dairy purchase prices range from $3,000 to $8,000 + GST. Phone us at Cooltek for pricing. You may be pleasantly surprised. 09 633 0071 info@machinetech.co.nz www.cooltek.co.nz