Section 2 unit 9 Refrigeration And Oil Chemistry Flashcards
Ozone is a type of
Oxygen
Depletion of the earth’s ozone shield will __________
-the sun’s ultraviolet rays on the
earth’s surface
Increase
__________ reacts with the
earth’s stratospheric ozone layer
Carbon
(CFCs) means
Chlorofluorocarbons
Chlorofluorocarbons abbreviations is
CFC
(HCFCs) means
Hydrochlorofluorocarbons
Hydrochlorofluorocarbons abbreviations is
HCFC
(HFCs) means
Hydrofluorocarbons
Hydrofluorocarbons abbreviations is
HFC
(HCs) means
Hydrocarbons
Hydrocarbons abbreviations is
HC
(HFOs) means
Hydrofluoro-olefins
Hydrofluoro-olefins abbreviations is
HFO
The refrigerant R-11 is a(n)
CFC. Chlorofluorocarbons
The refrigerant R-22 is a n)
Hydrofluorocarbons (HFCs)
When refrigerant is removed from a system, it
must be
Recovered
Before a refrigerant that has been removed from a
system can be sold to another customer, it must be
processed to the
ODP 720. Ozone depletion process
Cylinders used in the recovery of refrigerant must
be approved by the
environmental protective agency EPA
A micron is a measurement of a level of
positive pressure
The number-one contributor to global warming
carbon dioxide, CO
true or false. most refrigerants are heavier than air
True
The refrigerants that are thought to be the most
damaging to the earth stratospheric ozone layer
are the
Chlorofluorocarbons (CFCs)
The azeotropic mixture refrigerants are
R-500 and R-502.
True or false. Does the near-azeotropic refrigerant blends experience temperature glides
True
True or false. The correct refrigerant oils must be chosen for all
refrigerants.
True
The refrigerant blends R-404A and R-410A are
Hydrofluorocarbons (HFCs)
Propane, Butane, Isobutane, Isopentane, Methane, Ethane R-44 are all what refrigerant
Hydrocarbons (HCs)
