Proposed Refrigerant Alternatives at Boise State University

Document Type

Student Presentation

Presentation Date

April 2016

Faculty Sponsor

Scott Lowe


Refrigerant usage has been under scrutiny in the last 25 years due to the Ozone Depletion Potential (ODP) of the most commonly used refrigerants. The Montreal Protocol called for the phase out of Chloroflourocarbons (CFC) and Hydrochloroflourocarbons (HCFC) refrigerants in response to the problem of ozone depletion. Because of the Ozone Depletion Potential (ODP) and high Global Warming Potential (GWP) of these refrigerants they have been and are in the process of being phased out. With this phase out comes the use of Hydroflourocarbons (HFC), which have no ODP but still have high GWP. Our proposed refrigerant alternatives to those currently in use at Boise State University are Ammonia, which is currently used in chillers to refrigerate food products, Propane, which is used in small scale refrigerants on an occasional basis, and R-1234yf which is a hydrofluoroolefin (HFO) that is currently in the research and development stage for use in automobile air conditioning units. These alternatives are proposed because of their low to nonexistent ODP and GWP, but are currently in the research and development stage for use in large scale chillers.

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