Refrigerants A-Z: Chemistry, Safety, & Environment

SPONSORED BY DAIKIN - The need to electrify our built environment by integrating Air Source Heat Pumps (ASHPs) and Variable Refrigerant (VRF) systems is clear. Most ASHPs and VRF systems in the US use R-410A, a well-known HFC refrigerant. We know that HFC and other refrigerants have significant Global Warming Potential [GWP] and Ozone Depletion Potential (ODP). It is critical that we understand how these refrigerants work (all are not created equal), how they can be safely installed and maintained, and keep up to date on the latest in refrigerant development and availability.
In this session we will cover the basics of refrigerants and their role in the refrigerant cycle, and in the coefficient of performance [COP] of these systems. We will also dissect the environmental impacts of HFCs from their Global Warming Potential [GWP] to their Life Cycle Climate Performance and evaluate the life safety implications of HFC refrigerants with an introduction to the ASHRAE 15 & 34 standards. We will review previous and current phase-outs for refrigerants, as well as look forward to the next refrigerants for ASHPs and VRF, and building code implications and limitations that are involved.

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Wednesday, August 12, 2020 - 12:00pm to 1:00pm

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Learning Objectives:

  • Explain the role of refrigerants in ASHPs and VRF systems
  • Describe the basic chemistry of refrigerants, and their environmental impact, such as GWP and ODP
  • Recognize the life safety risks of HFC refrigerants, and explain how to safely apply and run ASHPs and VRF systems through buildings and occupied spaces
  • Explain the current and future outlook of refrigerants for ASHPs and VRF systems in the US

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