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Refrigeration: Quiz

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Question 1: As there is no condensation and evaporation intended in a gas cycle, components corresponding to the condenser and evaporator in a vapor compression cycle are the hot and cold gas-to-gas ________ in gas cycles.
Shell and tube heat exchangerFoulingHeat exchangerWater

Question 2: Cullen used a pump to create a partial vacuum over a container of ________, which then boiled, absorbing heat from the surrounding air.
Diethyl etherChloroformNitrous oxideEthylene

Question 3: In 1820, the British scientist ________ liquefied ammonia and other gases by using high pressures and low temperatures.
Charles-Augustin de CoulombJ. J. ThomsonWilliam Thomson, 1st Baron KelvinMichael Faraday

Question 4: This work is traditionally done by mechanical work but can also be done by magnetism, ________ or other means.
LaserX-rayLaser applicationsHelium

Question 5: In this cycle, a circulating refrigerant such as ________ enters the compressor as a vapor.
ChloroformHalomethaneChlorofluorocarbonCarbon tetrachloride

Question 6: The gas cycle is less efficient than the vapor compression cycle because the gas cycle works on the reverse Brayton cycle instead of the reverse ________.
CogenerationCombined cycleCoalRankine cycle

Question 7: New Englander ________, who became known as the "Ice King", worked on developing better insulation products for the long distance shipment of ice, especially to the tropics.
Concord, MassachusettsCambridge, MassachusettsBoston BrahminFrederic Tudor

Question 8: The most common types of refrigeration systems use the reverse-Rankine ________ cycle although absorption heat pumps are used in a minority of applications.
Gas compressorVapor-compression refrigerationRefrigerantChlorofluorocarbon

Question 9: Magnetic refrigeration, or ________, is a cooling technology based on the magnetocaloric effect, an intrinsic property of magnetic solids.
HeliumMagnetic refrigerationGadoliniumNickel

Question 10: Freon is a trademark of the ________ and refers to these CFC, and later hydrochlorofluorocarbon (HCFC) and hydrofluorocarbon (HFC), refrigerants developed in the late 1920s.
SunocoComcastDuPontHSBC Bank USA







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