Course Description

Chillers are essential in removing heat from buildings and industrial processes. Unlike small air conditioning units, chillers operate on a centralized basis, often serving entire buildings or campuses. The compressor is the largest energy consumer within the system, often accounting for the majority of electrical load. Because of this, even small improvements in compressor efficiency can lead to significant energy savings over time. Understanding compressors is therefore not just a technical necessity-it is an economic and sustainability priority.

What you'll learn in this course?

• Explain the role of compressors in vapor compression refrigeration cycles used in chillers.

• Identify different types of chiller compressors and their operating principles.

• Compare performance characteristics of reciprocating, screw, scroll, and centrifugal compressors.

• Understand compressor selection criteria for different HVAC applications.

• Analyze efficiency parameters such as COP and IPLV in relation to compressor performance.

• Describe capacity control methods used in various compressor types.

• Evaluate operational challenges such as surge, oil return, and heat rejection.

• Understand maintenance requirements and common failure modes.

• Interpret compressor performance curves and manufacturer data.

• Apply knowledge in selecting appropriate compressors for real-world systems.

Prerequisites

• Basic engineering knowledge and familiarity with HVAC systems and engineering units