Type III — Low-PressureQuestion 184 of 240
R-1233zd is increasingly used in modern low-pressure chillers because it:
a.Is a CFC with high ODP
b.Requires no recovery
c.Operates at very high pressure
d.It is a low-GWP HFO
Explanation
R-1233zd is a low-global-warming-potential HFO refrigerant used as a replacement for HCFC-123 in new low-pressure chillers. Like other low-pressure refrigerants it still runs in a vacuum and must be recovered to 25 mm Hg absolute. It has zero ozone depletion potential and a very low GWP.
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Related questions on this topic
- A device that automatically maintains the correct refrigerant level between the condenser and evaporator of a low-pressure chiller is the:
- HCFC-123 requires good ventilation during service primarily because it:
- Before opening a low-pressure chiller to replace a failed tube bundle, the technician must:
- Which statement about pressurizing a low-pressure appliance for leak detection is correct?
- A recovery cylinder used for a large low-pressure chiller should be:
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