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CO2 Transcritical Systems Training Manual 042718
www.hussmann.comoxygen for breathing. At typical commercial refrigeration temperatures, CO 2 operates at a higher pressure than synthetic refrigerants. When released at these pressures to the atmosphere, CO 2 can change phase to solid form, causing restrictions in the flow that can lead to a buildup in pressure. Asphyxiation As an A1 refrigerant, CO