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10 Cards in this Set
- Front
- Back
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Refrigerant mediums will evaporate: a) when pressure is increased b) when temperature is increased c) when they are diluted d) when temperature is decreased e) when heat is removed |
b) when temperature is increased |
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Which of the following components is not of a basic refrigeration system? a) evaporator b) condenser c) connecting piping d) vacuum pump e) control valve |
d) vacuum pump |
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If a cooled medium had an evaporation temperature of 2°C, the evaporation temp of the liquid refrigerant should be approx ___°C a) 2 b) 6 to 8 c) 1 d) 0 e) -8 to -3 |
e) -8 to -3 |
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If you keep adding heat to a liquid and still its temperature does not change, then that heat is called? a) warming up heat b) wasted heat c) sensible heat d) latent heat e) superheat |
d) latent heat |
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The function of the condenser is to: a) vaporize the liquid refrigerant b) change high pressure refrigerant vapour to liquid c) pressurize low pressure refrigerant d) vent off vapourized refrigerant e) lower the liquid refrigerant pressure |
b) change high pressure refrigerant vapour to liquid |
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Refrigeration is the transfer of heat a) from any substance b) to any substance c) from a higher temp substance to a lower surrounding d) from a lower temp substance to a higher surrounding e) any combination of the above |
d) from a lower temp substance to a higher surrounding |
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Which column in the refrigerant table lists the absolute pressure in kPa? a) 1 b) 2 c) 3 d) 4 e) 5 |
b) 2 |
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The rate at which a system will remove heat from the refrigerated medium is defined as a) coefficient of performance b) net refrigerating effect c) refrigeration capacity d) compression ratio e) differential efficiency |
c) refrigeration capacity |
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What happens in an ice box? a) ice does not melt b) cooler air sinks down c) cooler air rises d) warmer air sinks down e) temperature goes below 0 |
b) cooler air sinks down |
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Which of the following is an example of a loss of latent heat? a) water evaporating b) ice melting c) refrigerant evaporating d) air cooling e) water freezing |
e) water freezing |
