high pressure, high temperature, vapour refrigerant

high pressure, high temperature, liquid refrigerant

low pressure, low temperature, liquid refrigerant

low pressure, low temperature, vapour refrigerant

it increases the pressure of refrigerant

it regulates the flow of refrigerant to evaporator

it increases the temperature of refrigerant

none of the mentioned

compression

cooling and condensing

expansion and evaporation

all of the mentioned

the liquid refrigerant can be trapped in the head of cylinder

this may damage the valves or cylinder head

liquid refrigerant can wash away the lubricating oil thus accelerating wear

all of the mentioned

desuperheated-condensed-saturated liquid

desuperheated-saturated liquid-condensed

condensed-desuperheated-saturated liquid

saturated liquid-condensed-desuperheated

constant volume reversible process

constant pressure reversible process

adiabatic throttling process

Isentropic process

superheating of vapour

subcooling of liquid

both superheating of vapour and subcooling of liquid

wet compression

high, low, receives

low, high, receives

high, low, gives

low, high, gives

heat pump

refrigerator

compressor

both heat pump and refrigerator

$\frac{{\mathrm{T}}_{\mathrm{L}}}{{\mathrm{T}}_{\mathrm{H}}-{\mathrm{T}}_{\mathrm{L}}}$

$\frac{{\mathrm{T}}_{\mathrm{H}}}{{\mathrm{T}}_{\mathrm{H}}-{\mathrm{T}}_{\mathrm{L}}}$

$\frac{{\mathrm{T}}_{\mathrm{L}}}{{\mathrm{T}}_{\mathrm{H}}+{\mathrm{T}}_{\mathrm{L}}}$

$\frac{{\mathrm{T}}_{\mathrm{L}}}{{\mathrm{T}}_{\mathrm{L}}-{\mathrm{T}}_{\mathrm{H}}}$