FILLING BLANKS-REFRIGERATION COMPONENTS        Filling Blanks in Refrigeration    Filling Blanks Ref         Refri controls Filling blanks      Refri Trouble shooting-2           Refri trouble shooting-1         Refri controls Filling blanks          Refri Trouble shooting-2           Refri trouble shooting-1



Fill in the blanks increases deep understanding as well as knowledge. Further, especially fill in the blanks in University Question Papers is of utmost importance. 

  1. Oil separator

 Oil separator ————-from the refrigerant.

  1. Crank case

A crank case heater is ———–when the compressor is off.

  1. Compressor

The compressor is ————- of the refrigeration unit.

  1. Anemometer

Anemometer measures the ————–.

  1. Dehydrator

Dehydrator removes —————-from the refrigeration system.

  1. Refrigerant Leakage

 Detection of the leakage of Freon refrigerants is with——–.

  1. Thermo-couple

Thermo-couple measures —————–.

  1. Ton of refrigeration

One ton of refrigeration is equal to ————–kJ/hour.

  1. Heat rejected in condenser

In a refrigeration system, heat rejected in the condenser is equal to the sum of —————- and———-.

  1. Sensible heat

Temperature difference senses—————-heat.

  1. Refrigerant

Chemical name of R-134a is ————————————.

  1. Horse power

One Horse power in S.I. units is equal to —————Watts.

  1. Running capacitor

Running capacitor improves —————–.

  1. Condenser

Due to poor cooling in the condenser,——————-increases.

  1. Cooling capacity

Cooling capacity decreases with the decrease of————–pressure. Further, tons of refrigeration decreases with the increase of —————pressure.

  1. COP

COP increases with the increase of ———————pressure.

  1. Solenoid valve

Solenoid valve stops refrigerant flow when there is no —————–.

  1. Sight glass

Bubbles in the sight glass indicates————–of refrigerant in the refrigeration circuit.

Thus, the compressor never stops when there is —————of refrigerant.

    1. Ice

Ice is —————- than water.

  1. Saturated air

 Saturated air has same dry bulb temperature, wet bulb temperature and ————-temperature.

  1. Boiling point

The normal boiling point of ammonia is ———————.

  1. Specific eat

The highest specific heat is for —————.

  1. Entropy

—————-is constant in a reversible adiabatic process.


  1. Dry bulb temperature

 It is the temperature of the——-air.

  1. Wet bulb temperature

  Temperature of ——-air is the wet bulb temperature.

  1. Air refrigerant

Air is refrigerant in the ————————-air conditioning.

  1. Vapor absorption system

There is no ———–part in a vapor absorption system. Also, the gases charged in an absorption system are ————– and ———-. In addition, the pressure in the various parts of an absorption system is ——————.

  1. Piping

The material of piping in vapor absorption is—————–.

And the material of pipe with R-134a is ———————.

Further, liquid refrigerant —————-in the evaporator.

    1. Receiver

A receiver stores——-liquid refrigerant.

30. Accumulator

Further, an accumulator separates ————-and ————.

  1. Muffler

The function of the muffler in a refrigeration system is to reduce ———-.

  1. Expansion process

(i) The expansion process is at —————– enthalpy.

(ii) Therefore, process of expansion changes high pressure high temperature liquid into low pressure ——- and ——– .

(iii)In addition, valve used for expansion in small refrigeration unit is a ————————.

33. Evaporator

Thus, cooling in the evaporator is due to ———-heat transfer.

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