Self-Paced Learning

Variable-Speed Compressors On Chillers


  • Online Course
  • Free
  • 1.5 hours
  • 1.5

This course discusses the operational, performance and application differences for centrifugal (dynamic compression) and helical-rotary (positive displacement) compressors. Discussion includes an overview of how variable-speed drives affect chilled-water system components, physics of centrifugal compressor chillers and screw compressor chillers, applications that benefit from each technology, importance of proper life-cycle analysis supported by examples and application considerations. Attendees will leave with an understanding of which technologies bring real value to different system applications.Presenters:Jeanne Harshaw (host), Dustin Meredith, Dave Guckelberger, Eric Sturm, Dave Edmonds

Learning objectives:

  • Summarize the effects of VFDs on centrifugal and screw compressors in terms of physics (load/lift and performance)
  • Identify applications that offer customer benefits for each technology
  • Understand the importance of accurate life-cycle analysis (and provide examples)
  • Application considerations


Presentation handouts
Includes presentation slides, presenter biographies, outline..

Take the quiz
Assessment is required by USGBC and AIA. Please submit the form, take the quiz and Trane will provide you with a certificate of completion documenting your online attendance.

Order a DVD of this program
Item number APP-CMC053-EN

Variable-Speed Compressors On Chillers

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