Low cost, high energy efficiency

Low flammability and lower attainable temperatures

Low ozone depleting potential

Options (a) and ( c)are correct, but not (b)

To collect condensate gases from compressor

For storing refrigerants from the compressor

Exchange of heat

Storing liquid refrigerant after evaporation

Heating and dehumidification

Cooling and dehumidification

Heating and humidification

Humidification only

A Thermostat is attached to the evaporator coil

A fan blows air over the evaporator coils

A heating element is wound over the evaporator coils

No evaporator coil is used

It works even during short power failure and gives very high cooling

It uses D.C. power supply for running compressor and is very efficient

Very silent operation, since battery power is used

Uses no conventional refrigerants and hence ozone depletion threat is not