Practice Cycle Steps (2.2) - Vapour Compression & Refrigeration Systems

Practise this section

10 questions

Flashcard drill
5 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What happens to refrigerant vapor during isentropic compression?
Show hintHide hint
Think about what compression does in general.
Question 2.
What is the purpose of the condenser in the VCR cycle?
Show hintHide hint
It cools the vapor down.
3Question 3.
What is the first step of the VCR cycle?
- Isobaric Evaporation
- Isentropic Compression
- Isenthalpic Expansion
Show hintHide hint
Remember the initial phase that starts the cycle.
4Question 4.
True or False: In isenthalpic expansion, there is a change in enthalpy.
- True
- False
Show hintHide hint
Think about what 'isenthalpic' means.
Question 5.
A refrigeration system aims to increase its COP. List and explain three methods to improve the VCR cycle's performance.
Show hintHide hint
Consider improvements in both the refrigeration cycle and component designs.
Question 6.
Explain how pressure drops in piping and heat exchangers reduce the efficiency of a VCR system. What can be implemented to minimize these drops?
Show hintHide hint
Think about how smooth operations can enhance performance.

6 more questions in this section. Enroll free to practise them all.