The refrigerating effect of a refrigerant is:
a. Equal to its latent heat of vaporization
b. Greater than its latent heat of vaporization
c. Less than its latent heat of vaporization
d. Equal to its specific heat capacity
e. Less than its net-refrigerating effect
Answer: A
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Power Engineering Chapter 114
- The enthalpy of a vapour is
- Ammonia is explosive in concentrations between?
- Leakage tendency is determine by:
- The larger the difference between the temperature of the liquid refrigerant entering the evaporator and the actual evaporator temperature:
- The amount of liquid that may flash into vapour can be as high as?
- Which one of the following should a ideal refrigerant should NOT have?
- The refrigerant R-717 belongs to the following group
- The refrigerant R-764 belongs to the following group
- The refrigerant R-290 belongs to the following group
- The refrigerant R-600 belongs to the following group
- The refrigerant R-152a belongs to the following group
- The refrigerant R-142b belongs to the following group
- Ammonia is the only commonly used refrigerant which has the physical property of
- Which of the following is not a physical property of refrigerants?
- The ability of a refrigerant to be dissolved into oil and vice versa is called
- Which of the following is a thermodynamic property of heat?
- The refrigerant R-11 belongs to the following group
- The molecular mass of a refrigerant is a factor in which of the following refrigerant characteristics?
- R-134a is non-toxic and non-flammable. Which of the following groups does it belong to?
- The property which has to be known for the calculation of the size of control valves and piping etc. is:
- R-22:
- What is the name of the refrigerant that has the following characteristics? It is non-flammable, odourless, non-toxic, it does not have a corrosive effect on metal if water is present and at atmospheric pressure it has a boiling point of approximately -40.6°C.
- Which of the following characteristics is common in all of the group B refrigerants?
- Group "A" refrigerants are: