Which alternative refrigerants are suitable for uses in different applications?
No Canadian authority currently provides formal advice about the acceptability of alternatives. However, the US EPA provides technical evaluations of substitute, drop in or top-up refrigerants. Its evaluations are available on the Significant New Alternative Policy Web site at www.epa.gov/ozone/title6/snap. Environment Canada has an Ozone-Depleting Substances Alternatives and Suppliers List which also provides information and has recently established a panel which will be reviewing alternatives and making recommendations. This list can be obtained from their Web site at www.ec.gc.ca/ozone/archive/altlist/altlist.htm. In Canada, the Federal-Provincial Working Group on Controls Harmonization (Ozone Depleting Substances) is conducting on-going discussions on this matter and does not recommend the use of hydrocarbon-based refrigerant alternatives in systems not designed to contain flammable refrigerants.
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