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4.10 Refrigeration Principles and Systems

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power engineering 3b2 Quiz on 4.10 Refrigeration Principles and Systems, created by TRAVIS CANNING on 01/03/2016.
TRAVIS CANNING
Quiz by TRAVIS CANNING, updated more than 1 year ago
TRAVIS CANNING
Created by TRAVIS CANNING almost 10 years ago
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Resource summary

Question 1

Question
In a two stage, duplex compressor refrigeration system, the condenser for the first stage is the ______ for the second stage.
Answer
  • Eliminator
  • Purger
  • Receiver
  • Evaporator
  • Liquid cooler

Question 2

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

Question 3

Question
A/An _____ is usually provided between the low-pressure discharge and high-pressure suction of a multi-stage refrigeration system.
Answer
  • Condenser
  • Receiver
  • Purger
  • Evaporator
  • Intercooler

Question 4

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

Question 5

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

Question 6

Question
There are _____ basic elements common to most compression refrigeration systems.
Answer
  • 2
  • 3
  • 4
  • 5
  • 6

Question 7

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

Question 8

Question
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:
Answer
  • 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

Question 9

Question
The liquid receiver in a refrigeration system is a/an:
Answer
  • Oil storage unit
  • Storage vessel for liquid brine
  • Contaminated liquid storage tank
  • Surge vessel for refrigerant
  • Pressure vessel

Question 10

Question
In a two-stage refrigeration system, the 1st stage compressor is also known as a _____ compressor.
Answer
  • Booster
  • Standby
  • Low volume
  • Extraction
  • Refrigerant
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