Industrial refrigeration is one of the largest consumers of energy for manufacturing firms. If your company is concerned with its environmental footprint and the energy costs associated with the industrial refrigerator, it is essential that they have an industrial refrigeration unit installed with the most efficient features.
Choosing the Most-Efficient Compressors
Most of the energy consumption that results from industrial refrigeration comes from the compressors. The compressors need to be chosen so that they match the load properly. If the compressor is not efficient enough to match the load, the compressor can be made more efficient by adding variable frequency drives.
There are several types of compressors to choose from. For industrial refrigeration that is less than 100 horsepower, reciprocating compressors are usually the best. For industrial refrigerators that are over 100 horsepower, screw compressors are usually the best. Given that most industrial refrigerators use more than 100 horsepower, the screw compressor is the most common type used.
Having multiple compressors with different sizes is a good practice because the machines can be sequenced to keep the industrial refrigerator as loaded as possible, since having the right number of compressors maximizes efficiency. Larger compressors are used to handle most of the load. Then, when there is an upswing in the demand for cooling, the smaller compressors kick in.
The condensers are the second largest energy-consuming part of industrial refrigeration. For the condensers to operate more efficiently, they need to be sized for peak operation. The fan speed needs to be reduced so that it will match the load. This will lead to a lot of horsepower savings.
Both the compressor and condenser must be kept at the right temperature with help by the floating head pressure. Higher condensing temperatures mean that the compressors need to work harder, so the temperature must be lowered to allow for efficient operations.
The Best Refrigerant
The type of refrigerant used for the industrial refrigerant will affect how energy-efficient the industrial refrigerator is. Ammonia is the least expensive refrigerant, making it an effective refrigerant for keeping costs down.
Lubricants are needed to absorb heat throughout the refrigeration process. There are several lubrication products to choose from, but the most efficient one is the thermosiphon process. However, it isn't the least expensive option.
How the industrial refrigeration units are maintained also plays a major role in how energy-efficient they are. If the evaporative condensers have hard water and bacterial buildup, they will operate less efficiently. Therefore, a technician must clean the condensers periodically. The condenser fins and tubes also need to be kept clean for the condenser to operate efficiently. While these tasks might take time away from the core business, they are essential for keeping energy costs down. Contact an industrial refrigeration company for more information.Share