ELECTRICAL SERVICES FOR REFRIGERATION MECHANICS
Widely used in industrial refrigeration applications, we provide electrical services to refrigeration mechanics in food & Beverage, cold storage, oil & gas, mining and manufacturing sectors.
Ammonia is a superior refrigerant because it requires less energy to produce a given amount of cooling than any other synthetic refrigerant. Although in wide use, ammonia is an explosive substance, classed as B2: Toxic and Flammable, so it’s important you work with an electrician who knows what they’re doing. Component selection and work methods require and receive careful consideration so that compliance with Australian storage and handling standards (AS/NZS 1677.2) is maintained.
Every refrigeration system is unique in its complexity and system design. Our focus is on addressing the needs and electrical possibilities available at each site. We work within client timeframes and short lead times to supply CAD schematics, manufacture electrical control cabinets and provide installation, programming and commissioning.
Our areas of our expertise include:
• glycol pumping stations and pump control (VSD and soft starters)
• Gyro chilling and blast freezing
• Evaporator wiring and control
• Ammonia Compressor set
• Compressor loading and unloading
• Installation of process manufacturing, cool rooms, blast freezers
• Pressure transducers and flow switches
The future of Ammonia…
Increasingly stringent safety regulations are motivating businesses to reduce their levels of ammonia storage. Installations close to urban developments are perceived as being dangerous. The recent explosion at a fertilizer plant in Texas is a tragic example of the potential danger ammonia poses.
Some modern facilities are implementing ‘cascade’ systems using ammonia in conjunction with another refrigerant such as CO2 to reduce their ammonia charge.
The advantages of a cascade system are:
• Lower capital cost;
• Reduction in OH&S risk and cost;
• Reduced product contamination risk since CO2 would not spoil product like ammonia;
• Reduced system contamination risk due to the positive pressure configuration of a CO2 system;
• Lower ammonia refrigerant charge; and
• Efficiency gains;
Whilst not yet mainstream, it’s definitely a space to watch.