Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
6 Cards in this Set
- Front
- Back
|
As a general rule, the condensation temperature of a refrigerant should be between _____ higher than that of the cooling medium. 1) 10 and 25ºC 2) 5 and 15ºC 3) 15 and 20ºC 4) 0 and 10ºC 5) 15 and 25ºC |
15 and 20ºC |
|
|
Which of the following is an example of a loss of latent heat? 1. Water Evaporating 2. Ice Melting 3. Refrigerant evaporating 4. Air Cooling 1) None of the above 2) 1, 3, 4 3) 1, 3 4) 4 5) 3 |
None of the above |
|
|
As a general rule, the evaporation temperature of a refrigerant should be between _____ lower than that of the cooled medium. 1) 10 and 15ºC 2) 0 and 15ºC 3) 10 and 20ºC 4) 5 and 25ºC 5) 5 and 10ºC |
5 and 10ºC |
|
|
Which of the following statements about high-side pressure and temperature is true? 1) The condensation temperature of the refrigerant will be lower if the pressure of the vaporized refrigerant is lowered 2) The condensing temperature of the vapour is 15º-20ºC higher than the temperature of the medium used in the condenser 3) None of the above 4) The condenser functions by taking latent heat from the surrounding air and adding it as sensible heat to the refrigerant 5) The heat flow is from the cooling medium to the hot refrigerant |
The condensing temperature of the vapour is 15º-20ºC higher than the temperature of the medium used in the condenser |
|
|
If a cooled medium had an evaporation temperature of 2°C, the evaporation temperature of the liquid refrigerant should e approximately: 1) 6ºC to 8ºC 2) 1ºC 3) -8ºC to -3ºC 4) 2ºC 5) 0ºC |
-8ºC to -3ºC |
|
|
One tonne of refrigerant is: 1) 335 J per second 2) 13 958 kJ per day 3) 100 kJ per minute 4) 233 kJ per minute 5) 13 958 J per hour |
233 kJ per minute |
