PTAC 2420 | UPDATED Questions with 100% Verified Answers
Question:
What is the importance of reflux?
Answer:
Reflux on overhead system controls temperature and product purity
Question:
Batch distillation
Answer:
Once drum is filled, process is stopped and preparation for next batch is started.
Question:
Relationship between boiling points and pressure
Answer:
Pressure directly affects boiling point. If pressure
Increases or decreases the boiling point does the same.
Question:
What is volatility?
Answer:
how easily a liquid evaporates
Question:
High boiler and low boiler
Answer:
High boilers are at bottom of tower, and low boilers are at top of tower
Question:
" Packed columns "
Answer:
facilitate vapor liquid contact
, Question:
Azeotrope
Answer:
the boiling points of the mixtures are too close together to seperate
Question:
Refrigeration
Answer:
describes a process to transfer heat energy at a process condition below atmospheric
temperature, removes heat energy. absorption of heat energy
Question:
Most common used principal to absorb heat energy
Answer:
is to cause a phase change in a refrigerant in heat exchange equipment.
Question:
Refrigerant
Answer:
material with boiling and condensing point temperatures at reasonable pressures that are
used in mechanical, refrigeration facilities
Question:
Mechanical Refrigerant
Answer:
systems where the refrigerant is evaporated (absorbs heat energy) , compressed,
condensed, (discharges heat energy), and recycled back into evaporation.
Question:
Basic technology at work in refrigeration
Answer:
the conversion of a substance from a liquid to a vapor by the addition of latent heat of
vaporization.
Question:
What is the importance of reflux?
Answer:
Reflux on overhead system controls temperature and product purity
Question:
Batch distillation
Answer:
Once drum is filled, process is stopped and preparation for next batch is started.
Question:
Relationship between boiling points and pressure
Answer:
Pressure directly affects boiling point. If pressure
Increases or decreases the boiling point does the same.
Question:
What is volatility?
Answer:
how easily a liquid evaporates
Question:
High boiler and low boiler
Answer:
High boilers are at bottom of tower, and low boilers are at top of tower
Question:
" Packed columns "
Answer:
facilitate vapor liquid contact
, Question:
Azeotrope
Answer:
the boiling points of the mixtures are too close together to seperate
Question:
Refrigeration
Answer:
describes a process to transfer heat energy at a process condition below atmospheric
temperature, removes heat energy. absorption of heat energy
Question:
Most common used principal to absorb heat energy
Answer:
is to cause a phase change in a refrigerant in heat exchange equipment.
Question:
Refrigerant
Answer:
material with boiling and condensing point temperatures at reasonable pressures that are
used in mechanical, refrigeration facilities
Question:
Mechanical Refrigerant
Answer:
systems where the refrigerant is evaporated (absorbs heat energy) , compressed,
condensed, (discharges heat energy), and recycled back into evaporation.
Question:
Basic technology at work in refrigeration
Answer:
the conversion of a substance from a liquid to a vapor by the addition of latent heat of
vaporization.
