U.S. Department of Energy - Energy Efficiency and Renewable Energy

Federal Energy Management Program

New and Underutilized Technology: Compressor Cycling Controller

The following information outlines key deployment considerations for compressor cycling controllers within the Federal sector. This information spans:

• Benefits
• Application
• Key Factors for Deployment
• Ranking Criteria
• Resources

Benefits

A compressor cycling controller is an add-on system compliments existing controls to maximize (optimize) compressor operation. Software dynamically analyzes compressor cycles, achieving an overall reduction in run time without causing over cycling.

Application

Compressor cycling controllers are applicable in most building categories and refrigeration equipment.

Key Factors for Deployment

Energy efficiency gains are achieved without affecting cooling capacity.

Ranking Criteria

Federal energy savings, cost-effectiveness, and probability of success are ranked 0-5 with 0 representing the lowest ranking and 5 representing the highest ranking. The weighted score is ranked 0-100 with 0 representing the lowest ranking and 100 representing the highest ranking.

Resources

The following resources are available:

• Evaluation of Abbotly Technologies Compressor Optimization Control Product: Oak Ridge National Laboratory (ORNL) assessment of ESM System 4000 as applied to two refrigeration compressor rack systems at the ASDA/Wal-Mart Super Center in Sheffield, United Kingdom.