Refrigeration Contractors

Refrigeration and freezing systems can account for a large portion of a facility's energy usage and therefore are excellent targets for energy efficiency improvements. There are three main energy saving strategies for refrigeration systems.

O & M savings: Set temperatures to the lowest possible setting, don't overload units beyond capacity and clean coils to improve heat transfer. Also, position refrigeration units in open areas where heat can be vented properly and air flows freely.

Compressor Modifications: Install variable speed drives (VSDs) and high-efficiency motors on compressors while using auto-unloading to reduce compressor work when the system is not fully loaded.

Condenser Modifications: Install variable speed drives (VSDs) and high-efficiency motors on condenser fans. Mechanical sub-cooling is a method of increasing the efficiency cycle by using an additional heat exchanger in the refrigerant cycle. Also, increase the heat exchanger area and improve the efficiency of the refrigerant cycle by over-sizing condensers.

You can also take some general improvement steps:

Install controls on anti-condensate heaters in order to minimize run-time. These controls sense the humidity in the air and operate the heaters only when needed.

Open-drive motor systems, as opposed to hermetically sealed motor systems, can make your refrigeration system more efficient by ejecting waste heat into the air, instead of back into the refrigerant, thereby reducing the cooling load.