• Insulate the vat, pipes and spaces underneath the vat
• Check and repair any leaks in refrigeration system
• Pre-cool milk as much as possible before placing into milk vat
• Monitor plate cooler performance by checking actual milk temperature against set point temperature and ensure it is sized correctly for milk flow
• Check pre-cooler inlet filter and water flow to ensure volume is adequate and constant
• Check and clean the fins on condensing unit of refrigeration plant and ensure good airflow around the unit
• Service the plate cooler and refrigeration unit regularly – at least annually
• Consider the source of pre-cooler water and whether it is cold enough.
• Talk to your supplier about new cleaning technologies and chemical improvements.
• Install heat and chemical recovery systems.
• Use energy efficient globes
• Turn off lights when not in use – use natural light when possible
• Repair defective light fittings
• Install automatic light sensors if suitable
• Consider installing low watt fluorescent lights.
Water and effluent pumps
• Although water management and pumping technology is often automated, significant electricity savings can be made by checking this equipment
• Check there are no leaks or pressure loss points
• Choose appropriately sized hoses and nozzles to minimise wash down time
• Size pipes correctly to capacity of pumps
• Install the most energy efficient pump available.
• Only run the vacuum pump when needed
• Check belts and pulleys are correctly tensioned and any replacements match
• Install a Variable Speed Drive (VSD) linked to your motor’s vacuum requirements
• Rotary vanes or lobe pumps with variable speed drives may also be suitable
replacements for a water ring pump
• Look for the most energy efficient model available.
• Shop around for the best priced electricity supplier. You could make significant savings just by asking your current supplier or changing retailers
• Use off-peak power when possible
• Consider solar, wind and other alternative energy sources if available in your area.
• Consider solar or gas water systems to heat or pre-heat water
• Heat water only when required – not all day and night
• Check water is not boiling in the cylinder
• Check thermostat settings monthly to ensure good performance
• Compare the temperature of the outlet water with the thermostat to ensure water is not overheated
• Regularly check the element anodes for corrosion – replace if needed
• Regularly check the pipe and cylinder for leaks – repair or replace if required
• Insulate the hot water system (both cylinder and discharge lines)
• Size all systems to appropriate load size and minimise unused capacity
• Install heat recovery equipment to capture heat generated by milk refrigeration systems. Examples of such heat exchange systems have cut heating and cooling costs by 30 per cent.