Q. The refrigerant carbon dioxide is not widely used because of its __________ power require ments per tonne of refrigeration and high operating pressures.

View solution

Q. The by-pass factor of a cooling coil decreases with

View solution

Q. For unsaturated air, the dew point temperature is __________ wet bulb temperature.

View solution

Q. During dehumidification process, __________ remains constant.

View solution

Q. Pressure of water vapour is given by

View solution

Q. The value of the wave length for maximum emissive power is given by

View solution

Q. Emissivity of a body will be equal to its absorptivity at all temperatures.

View solution

Q. Dehydration is the process of removing water vapour from the surrounding air.

View solution

Q. The cooling of air, without any change in its specific humidity, is known as sensible cooling.

View solution

Q. The capacity of the cooling tower and spray ponds __________ as the wet bulb temperature of air decreases.

View solution

Q. A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called

View solution

Q. The total pressure exerted by the mixture of air and water vapour is equal to the sum of pressures which each constituent would exert, if it occupied the same space by itself. This statement is called

View solution

Q. The expansion valve in a refrigerator controls the flow of refrigerant.

View solution

Q. Upto the critical radius of insulation,

View solution

Q. The relative humidity lines on a psychrometric chart are

View solution

Q. The C.O.P. of a heat pump working on a reversed Carnot cycle is

View solution

Q. A vapour absorption refrigeration system

View solution

Q. The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)

View solution

Q. The dry bulb temperature lines, on the psychrometric chart are

View solution

Q. The pressure at the outlet of a refrigerant compressor is called

View solution