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Industrial Refridgeration > D2L Assignment > Flashcards

D2L Assignment Flashcards

1
Q

What term is used for the type of heat energy that can pass through a vacuum?

A

Radiation

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2
Q

How does heat energy move within a body of fluid?

A

Convection

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3
Q

How does heat energy move through solids?

A

Conduction

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4
Q

What is the term for heat energy that brings about a change of state?

A

Latent Heat

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5
Q

What is the term for heat energy that can be measured by a thermometer?

A

Sensible Heat

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6
Q

What describes the effect of pressure on the boiling point of a liquid?

A

An increase in pressure leads to an increased boiling point

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7
Q

What is the primary purpose of gas plant refrigeration processes?

A

To separate liquefied petroleum products from natural gas

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8
Q

What is the purpose of the condenser in the refrigeration cycle?

A

To reject heat from the circuit

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9
Q

What is the evaporator’s function in the refrigeration cycle?

A

To absorb heat from the refrigerated space

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10
Q

What vapour is found in the suction line of a refrigeration system?

A

Cool low-pressure vapour

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11
Q

What vapour is found in the discharge line of a refrigeration system?

A

Hot - high pressure vapour

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12
Q

Which piping material is suitable for use with ammonia refrigerant?

A

Steel

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13
Q

What gas is used to displace air when brazing copper refrigerant lines?

A

Nitrogen

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14
Q

What is a vacuum pump used for in a refrigeration system?

A

to remove air and moisture

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15
Q

Which component of a flooded refrigeration system is ‘flooded’?

A

Evaporator

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16
Q

What is a common maintenance procedure done on an ammonia chiller?

A

Drain Oil

17
Q

Why is brine used for ice rink refrigeration systems?

A

To ensure an ammonia leak does not harm athletes or spectators

18
Q

What type of refrigeration system uses a low-pressure receiver and a liquid refrigeration circulation pump?

A

Liquid overfeed system

19
Q

What is a readily available source of heat that is often used for defrosting the evaporator in liquid overfeed systems?

A

Hot Refrigerant Vapour

20
Q

What refrigerant is used in a gas plant?

A

Propane

21
Q

Which type of refrigeration system requires a heat source and has no compressor?

A

Absorption chiller

22
Q

What is the refrigerant used in a lithium bromide refrigeration system?

A

Water

23
Q

What is the purpose of the vented brine tank in a flooded refrigeration system?

A

It prevents pressure from building in the brine circuit

24
Q

What should you do if you are splashed with ammonia?

A

Flush area with plenty of water

25
Q

What is the purpose of an automatic purge system?

A

To remove non-condensable gases from the system

26
Q

As the refrigerant passes through the expansion valve it starts to change from:

A

Liquid to vapour and drops in temperature

Industrial Refridgeration (3 decks)

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