TRAVIS CANNING
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power engineering 3b2 Quiz sobre 4.10 Refrigeration Principles and Systems, criado por TRAVIS CANNING em 01-03-2016.

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TRAVIS CANNING
Criado por TRAVIS CANNING aproximadamente 8 anos atrás
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4.10 Refrigeration Principles and Systems

Questão 1 de 10

1

In a two stage, duplex compressor refrigeration system, the condenser for the first stage is the ______ for the second stage.

Selecione uma das seguintes:

  • Eliminator

  • Purger

  • Receiver

  • Evaporator

  • Liquid cooler

Explicação

Questão 2 de 10

1

The major components of a high-pressure ammonia system are:

Selecione uma das seguintes:

  • Compressor, condenser, oil purifier, high-pressure cutout, evaporator

  • Compressor, condenser, expansion valve, high-pressure cutout, evaporator

  • Compressor, condenser, expansion valve, oil purifier, evaporator

  • Compressor, condenser, expansion valve, high-pressure cutout, expansion valve

  • Compressor, condenser, expansion valve, liquid receiver, evaporator

Explicação

Questão 3 de 10

1

A/An _____ is usually provided between the low-pressure discharge and high-pressure suction of a multi-stage refrigeration system.

Selecione uma das seguintes:

  • Condenser

  • Receiver

  • Purger

  • Evaporator

  • Intercooler

Explicação

Questão 4 de 10

1

The standard refrigeration cycle is used to compare refrigerants and machines operating under comparable conditions. These standard conditions are:

Selecione uma das seguintes:

  • 1030 kPa and atmospheric pressure

  • 30deg c condensing and -15 deg c evaporating

  • 30 kPa and atmospheric pressure

  • -30deg C condensing and 15 deg c evaporating

  • 30 kPa and atmospheric temperature

Explicação

Questão 5 de 10

1

A reciprocating refrigerant compressor may have both a/an ______ and a/an ______.

Selecione uma das seguintes:

  • Magnetic plug, integral air reciever

  • Reverse osmosis membrane, emergency connecting rod

  • Oil foam breaker, magnetic plug

  • Oil foam plug, magnetic foam breaker

  • Teflon drive coupling, reverse RPM indicator

Explicação

Questão 6 de 10

1

There are _____ basic elements common to most compression refrigeration systems.

Selecione uma das seguintes:

  • 2

  • 3

  • 4

  • 5

  • 6

Explicação

Questão 7 de 10

1

Most modern refrigeration systems make use of the principle of absorbing heat by:

Selecione uma das seguintes:

  • Condensing refrigerant at low pressure

  • High evaporating pressures

  • The evaporation of a liquid, and then discarding the heat to the atmosphere

  • Evaporation of brine

  • High condensing temperature and pressure

Explicação

Questão 8 de 10

1

The difference in enthalpy of ammonia as a fluid at saturation conditions at 1165.8 kPa abs and 236.2 kPa abs is found in the:

Selecione uma das seguintes:

  • hf column and is 208.9kJ/kg

  • hf and hg columns and is 1311.6 kJ/kg

  • hf column and is 114.905 kJ/kg

  • hf column and is 0.508788 kJ/kg

  • hg column and is 658.519 kJ/kg

Explicação

Questão 9 de 10

1

The liquid receiver in a refrigeration system is a/an:

Selecione uma das seguintes:

  • Oil storage unit

  • Storage vessel for liquid brine

  • Contaminated liquid storage tank

  • Surge vessel for refrigerant

  • Pressure vessel

Explicação

Questão 10 de 10

1

In a two-stage refrigeration system, the 1st stage compressor is also known as a _____ compressor.

Selecione uma das seguintes:

  • Booster

  • Standby

  • Low volume

  • Extraction

  • Refrigerant

Explicação

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