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Херсонский государственный университет
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[НЕСОРТИРОВАННОЕ]
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Smart Control

Stop and Check

Module 2 Refrigeration Plant

Variant 2

Name _________________________________ Group _______________ Date __________

Points 100/_________

Vocabulary

  1. Match the words with proper definitions

a/ actuator; b/ Peltier effect; c/ delivery valves; d/ insulation; e/ capillary tube; f/ main bearing; g/ carbon dioxide; h/ valve plate; i/ thrust washer; j/ ambient

  1. The gas produced when animals breathe out or in process of burning, known also as dry ice refrigerant –

  2. Temperature relating to the immediate surroundings –

  3. Presence of heating or cooling at an electrified junction of two different conductors and is named for French physicist Jean Peltier –

  4. The principal part of a machine in which a turning rod is held –

  5. A heat-sensitive gear which ensures automatically bringing the thermostatic valve in a working state –

  6. A cover that prevents electricity, sound, heat, cold etc. from getting out or in –

  7. A tube of small internal diameter; holds liquid by capillary action –

  8. A flat thin piece of valuable metal on which valves are fitted –

  9. A ring of metal placed at the end of the crankshaft to secure end thrust –

  10. Valves that are placed on the upper side of the valve plate –

___ / 10

  1. Choose the proper word to fill in gap

  1. Storage life of drinkable juice is ___ for two months.

a/ guaranteed

b/ maintained

c/ ensured

  1. There are ___ barriers in Membrane type tanks, but there aren’t any of them in Moss type tanks.

a/ middle

b/ secondary

c/ intermediate

  1. Conventional refrigeration cycles can only operate efficiently using fluids far below ___ temperature.

a/ boiling

b/ expansion

c/ critical

  1. Membrane type and Moss type are the main two types of gas ___ .

a/ holds

b/ tanks

c/ wells

  1. ___ refrigeration may be classified as vapor (vapor-compression and vapor-absorption) and gas cycles.

a/ cyclic

b/ non-cyclic

c/ thermoelectric

  1. As the refrigerant takes heat away, it changes into ___ .

a/ liquid

b/ vapour

c/ gas

  1. In compressor when pressure of gas goes up, the temperature ___ .

a/ drops

b/ increases

c/reduces

  1. Water cooled ___ are constructed as tube in tube or shell and tube designs.

a/ compressors

b/ evaporators

c/ condensers

  1. The actuator is intended for bringing the valve mechanism in a ___ state.

a/ emergency

b/ working

c/ stand-by

  1. The cold liquid-vapor mixture travels through the evaporator and is completely vaporized by cooling the warm air with a ___.

a/ fan

b/ conditioner

c/ injector

  1. Heat is removed from a low-temperature space or source and ___ to a high-temperature sink with the help of external work.

a/ reduced

b/ rejected

c/ redirected

  1. In cyclic refrigeration heat is removed from a low temperature space to a ___ temperature space.

a/ high

b/ lower

c/ambient

  1. Evaporators are usually constructed of a fin and tube coil, fan/s, a cabinet which includes a condensate ___ .

a/ receiver

b/ manifold

c/ drain

  1. This spherical tank can expand and ___ according the capacity of the cargo.

a/ change

b/ contract

c/ adjust

  1. When liquid refrigerant goes through the expansion valve where its pressure abruptly ___, causing flash evaporation.

a/ increases

b/ growth

c/ decreases

___ / 15

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