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Overview of Chiller Compressors

COURSE NO: M04-027
Overview of Chiller Compressors
Course Highlights

This online engineering PDH course provides comprehensive information on the chiller compressors. It addresses the key issues pertaining to the chiller compressor selection and their applications. The practical considerations and assessment criterion are also discussed in brief.


In HVAC industry, the refrigeration machine that produces chilled water is referred to as a "chiller". The majority of installations operating worldwide are based on the vapor compression chillers that use mechanical energy in the form of electric  motor to drive the cooling cycle. The vapor compression chiller packages are generally classified by 4 types of compressors namely centrifugal, reciprocating, screw and scroll.


This 4 PDH online course is applicable to HVAC engineers, facility engineers, architects, environmentalists, operations and maintenance personnel, as well as consultants and contractors who construct, build and manage facilities.

Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Operating principle of reciprocating, screw, centrifugal and scroll compressors
  • Key advantages, disadvantages, limitations and drawbacks of various refrigeration compressors
  • Efficiency ratings of various chiller options on peak load and part load
  • Factors affecting the efficiency of chiller compressors
  • Types of refrigerants used/recommended
  • Heat rejection options - air cooled vs. water cooled chillers
  • Reliability, maintenance, field serviceability of various chiller options
  • ARI standard 550/590 performance standard for defining part load performance ratings - IPLV vs. NPLV
  • Importance of peak load and part load analysis in determining the overall capacity and number of chillers
  • Series and parallel arrangement of chillers
  • Operational regimes, infrastructural availability and physical attributes affecting the selection of chillers
  • Procurement strategies, performance specifications, life cycle cost considerations
Course Document

In this professional engineering CEU course, you need to review the document titled, "Overview of Compressor Chillers".

To view, print and study the course document, please click on the following link(s):
Overview of Chiller Compressors (373 KB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of twenty five (25) questions to earn 4 PDH credits. The quiz will be based on the entire document.


The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: