Improve your refrigeration efficiency.
Practical tips for choosing and maintaining your refrigeration:
- Temperature control – use advanced temperature controls and sensors to make sure your refrigeration levels stay accurate. For large refrigerated areas like vegetable stores use multiple sensors to get a representative measure of the temperature. Often you can offset temperatures slightly lower during off peak periods so you overcool when electricity rates are cheaper, then let temperature drift slightly higher in the peak period so you avoid peak use.
- Energy efficiency standards – new refrigeration equipment has more efficient compressors, closer controlled expansion valves and variable speed condenser fans to lower your energy use – check for these components before you choose a new system.
- Maintenance – the coils which eject the heat from the refrigeration systems (sometimes installed outside the building) should be kept clean and have good access to a free flow of fresh air. Have your units serviced regularly, checking equipment pressure settings and the gas charge.
- Insulation and sealing – insulation is always an important element of conserving heat or cooling in a building, especially where external areas are susceptible to solar gain. Spray on insulation or composite panels can be used to reinsulate. Also check seals round doors and vents to reduce air leakage.
- Free air cooling –for hard vegetable stores like potatoes, you can simply use ambient cooling when conditions are favourable. Cooling with the surrounding air costs a fraction of cooling with refrigeration.