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What’s important when designing for a new refrigerant? Lubricant perspective.

Number: 2248

Author(s) : KARNAZ J.

Summary

Since development of mechanically driven refrigeration and air conditioning applications the world has seen numerous changes of refrigerants driven by safety, health, environment, and energy stipulated regulations. If we group the early refrigerants, which had certain safety and health drawbacks, into one group we are moving into our fourth generation of refrigerant usage: with the fifth not too far behind. Understanding which refrigerant is used is the first step in designing a compressor, picking a lubricant, and evaluating the performance within a system. Cooperation between leading industry experts in compressor design, lubrication, refrigerant chemistry, and system operation is needed to be successful in optimizing time to market, cost and outcome.
One part of the equation needed to create optimization in selection and implementation is the lubricant. Over my 38 years of experience in compressor and lubricant selection I have noticed certain patterns in what engineers and scientist try to look for in a lubricant when designing for a refrigeration and air conditioning system. I have summarized below in my top technical questions.
Top Technical Driven Questions:
1. Will my lubricant work with all my refrigerants?
2. Does it matter what materials I use with my lubricant?
3. Can my lubricant provide me better performance?
This is where it gets difficult separating contributions from the lubricant and refrigerant based on how each of them designs and develops from their own individual market perspective. This paper will address what is needed in the transition, focusing on some new next generation refrigerants but also looking back at past refrigerants and how this knowledge can help direct the path forward.

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Details

  • Original title: What’s important when designing for a new refrigerant? Lubricant perspective.
  • Record ID : 30030628
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2022

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