RETA CIRO SATURATED REFRIGERANT
TABLES PRACTICE EXAM WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. Saturation temperature from a pressure table
An operator is working with an ammonia refrigeration system and
records an evaporator pressure of 30.0 psig. A saturated-ammonia table
provided for the exercise shows:
Pressure Saturation Temperature
28.0 psig 5.0°F
30.0 psig 7.0°F
32.0 psig 9.0°F
What saturation temperature should the operator associate with the
measured 30.0 psig pressure?
A. 3.0°F
B. 5.0°F
C. 7.0°F
D. 9.0°F
Answer: C. 7.0°F
Rationale: A saturated refrigerant table establishes the pressure-
temperature relationship at saturation. Because the table directly lists
1
,30.0 psig as corresponding to 7.0°F, no interpolation or calculation is
necessary. The other temperatures correspond to different pressures.
2. Determining pressure from saturation temperature
A saturated-ammonia table contains the following entries:
Saturation Temperature Saturation Pressure
-10°F 17.0 psig
-5°F 19.5 psig
0°F 22.0 psig
5°F 25.0 psig
An operator determines that the refrigerant temperature at a saturated
location is 0°F. What pressure should correspond to that saturation
condition?
A. 17.0 psig
B. 19.5 psig
C. 22.0 psig
D. 25.0 psig
Answer: C. 22.0 psig
Rationale: The table directly associates 0°F saturation temperature
with 22.0 psig. A saturated refrigerant has a unique pressure-
temperature relationship at a specified saturation condition.
3. Meaning of saturation temperature
2
,When an operator reads a saturation temperature from a refrigerant
pressure-temperature table, what does that temperature represent most
directly?
A. The actual temperature of every component containing the refrigerant
B. The temperature at which the refrigerant changes phase at the
specified pressure
C. The compressor discharge temperature
D. The temperature of the compressor oil
Answer: B. The temperature at which the refrigerant changes phase
at the specified pressure
Rationale: Saturation temperature is the temperature corresponding to
the boiling or condensing condition at a particular pressure. It does
not mean that every component containing the refrigerant is at that
temperature.
4. Interpolating between table values
An ammonia saturated-temperature table provides:
Pressure Saturation Temperature
40 psig 20°F
50 psig 30°F
An operating condition is 45 psig. Assuming a linear relationship for this
interpolation exercise, what saturation temperature should be estimated?
A. 22°F
B. 25°F
C. 27°F
D. 30°F
Answer: B. 25°F
3
, Rationale: The pressure is halfway between 40 and 50 psig. Therefore,
the interpolated temperature is halfway between 20°F and 30°F: 25°F.
In actual refrigeration work, the published refrigerant table should be
consulted directly when available rather than assuming linearity over
large intervals.
5. Why interpolation is used
Why might a refrigeration operator interpolate between two values in a
saturated refrigerant table?
A. To convert gauge pressure into horsepower
B. To estimate a property when the exact measured value is not listed
C. To determine compressor motor voltage
D. To calculate pipe diameter automatically
Answer: B. To estimate a property when the exact measured value is
not listed
Rationale: Refrigerant tables contain discrete tabulated values. If an
operating pressure or temperature falls between entries, interpolation
can provide an estimate. The quality of the estimate depends on the
interval and the property being interpolated.
6. Saturated liquid versus saturated vapor
Which statement best describes a refrigerant identified as saturated
liquid in a saturated refrigerant table?
A. It is liquid at a temperature below its saturation temperature
B. It is liquid at the point where any additional heat would begin
vaporization at the specified pressure
C. It contains no refrigerant vapor under any possible circumstance
D. It is always subcooled liquid
4
TABLES PRACTICE EXAM WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. Saturation temperature from a pressure table
An operator is working with an ammonia refrigeration system and
records an evaporator pressure of 30.0 psig. A saturated-ammonia table
provided for the exercise shows:
Pressure Saturation Temperature
28.0 psig 5.0°F
30.0 psig 7.0°F
32.0 psig 9.0°F
What saturation temperature should the operator associate with the
measured 30.0 psig pressure?
A. 3.0°F
B. 5.0°F
C. 7.0°F
D. 9.0°F
Answer: C. 7.0°F
Rationale: A saturated refrigerant table establishes the pressure-
temperature relationship at saturation. Because the table directly lists
1
,30.0 psig as corresponding to 7.0°F, no interpolation or calculation is
necessary. The other temperatures correspond to different pressures.
2. Determining pressure from saturation temperature
A saturated-ammonia table contains the following entries:
Saturation Temperature Saturation Pressure
-10°F 17.0 psig
-5°F 19.5 psig
0°F 22.0 psig
5°F 25.0 psig
An operator determines that the refrigerant temperature at a saturated
location is 0°F. What pressure should correspond to that saturation
condition?
A. 17.0 psig
B. 19.5 psig
C. 22.0 psig
D. 25.0 psig
Answer: C. 22.0 psig
Rationale: The table directly associates 0°F saturation temperature
with 22.0 psig. A saturated refrigerant has a unique pressure-
temperature relationship at a specified saturation condition.
3. Meaning of saturation temperature
2
,When an operator reads a saturation temperature from a refrigerant
pressure-temperature table, what does that temperature represent most
directly?
A. The actual temperature of every component containing the refrigerant
B. The temperature at which the refrigerant changes phase at the
specified pressure
C. The compressor discharge temperature
D. The temperature of the compressor oil
Answer: B. The temperature at which the refrigerant changes phase
at the specified pressure
Rationale: Saturation temperature is the temperature corresponding to
the boiling or condensing condition at a particular pressure. It does
not mean that every component containing the refrigerant is at that
temperature.
4. Interpolating between table values
An ammonia saturated-temperature table provides:
Pressure Saturation Temperature
40 psig 20°F
50 psig 30°F
An operating condition is 45 psig. Assuming a linear relationship for this
interpolation exercise, what saturation temperature should be estimated?
A. 22°F
B. 25°F
C. 27°F
D. 30°F
Answer: B. 25°F
3
, Rationale: The pressure is halfway between 40 and 50 psig. Therefore,
the interpolated temperature is halfway between 20°F and 30°F: 25°F.
In actual refrigeration work, the published refrigerant table should be
consulted directly when available rather than assuming linearity over
large intervals.
5. Why interpolation is used
Why might a refrigeration operator interpolate between two values in a
saturated refrigerant table?
A. To convert gauge pressure into horsepower
B. To estimate a property when the exact measured value is not listed
C. To determine compressor motor voltage
D. To calculate pipe diameter automatically
Answer: B. To estimate a property when the exact measured value is
not listed
Rationale: Refrigerant tables contain discrete tabulated values. If an
operating pressure or temperature falls between entries, interpolation
can provide an estimate. The quality of the estimate depends on the
interval and the property being interpolated.
6. Saturated liquid versus saturated vapor
Which statement best describes a refrigerant identified as saturated
liquid in a saturated refrigerant table?
A. It is liquid at a temperature below its saturation temperature
B. It is liquid at the point where any additional heat would begin
vaporization at the specified pressure
C. It contains no refrigerant vapor under any possible circumstance
D. It is always subcooled liquid
4
