Refrigeration cycle
What are the four main components ?
condenser, compressor ,metering device, evaporator
The HVACR industry is currently transitioning away from HFCs to
HFOs
OSHA's electrical standards are based on :
the NEC
refrigerant can not be called "reclaimed" unless it
has been chemically analyzed and the refrigerant meets the ARI-700 purity standard
what state is the refrigerant in when it is in the suction line?
vapor
R-744(CO2) has a GWP of ___
1
What are the four main types of electrical injuries?
Electrocution, electric shocks, burns, indirect
an example of an HFC refrigerant is
R-32, R-125, R-134a
what state is refrigerant in when it is in the discharge line?
liquid
refillable cylinders should not be filled beyond__% of there maximum capacity
80%
The OSHA standard requires flexible cords to be rated for:
Hard or extra hard usage
5 types of compressor
scroll, screw, recipricating, rotary, centrifugal
component that removes heat from the superheated refrigerant?
condenser
R-410a has a flammability classification of ___
A1
All portable electric tools that are damaged shall be:
removed and tagged "do not use"
HCFC means
hydrochlorofluorocarbon
when changing water to ice , what must be removed?
Latent heat
Commercial refrigerants is seeing expanded use of ___ refrigerants
A3 Flammable
The three elements of basic program for electrical safety are:
recognize, evaluate, and control
what refrigerants that are phased out?
R-410a, R-22, R-12