Which of the following statements about high-side pressure and temperature is true?
a) The heat flow is from the cooling medium to the hot refrigerant.
b) The condensing temperature of the vapour is 15 - 20 degrees C higher than the temperature of the medium used in the condenser.
c) The condensation temperature of the refrigerant will be lower if the pressure of the vapourized refrigerant is lowered.
d) The condenser functions by taking latent heat from the surrounding air and adding it as sensible heat to the refrigerant.
e) None of the above
Answer: B
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Power Engineering Chapter 113
- Refrigeration is usually measured in:
- Superheat the evaporator is defined as:
- The heat that a refrigerant absorbs to cause it to change from a liquid state to a gaseous state is called:
- Natural refrigeration is best described by the example of an:
- Which column in the refrigerant table lists the absolute pressure in kPa?
- If a cooled medium had an evaporation temperature of 2 degrees C, the evaporation temperature of the liquid refrigerant should be approximately
- One tonne of refrigeration is
- Refrigerant mediums will evaporate
- The rate at which a system will remove heat from the refrigerated medium is defined as
- Which of the following statements about low-side pressure and temperature is false?
- The function of the condenser is to
- Which of the following is an example of a loss of latent heat? i) water evaporating ii) ice melting iii) refrigerant evaporating iv) air cooling
- In the case of a simple ice box which of the following heat transfers is correct?
- The net refrigerating effect of a refrigerant is the amount of heat:
- With regard to the condenser in a refrigeration system, which of the following statements is true?
- When a liquid evaporates, it
- One tonne of refrigeration is:
- The function of the condenser in a refrigeration system is to:
- Which of the following is an example of a loss of latent heat?
- If the first column of a refrigeration table lists the saturation temperature of a refrigerant, which column will most likely list the saturation pressure?
- In a closed vessel, the boiling point of a liquid can be raised by:
- The two major types of refrigeration systems are:
- In a refrigeration system, the liquid refrigerant is changed to a gas in the:
- Refrigerants will evaporate when the: