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

More Questions from Heat Transfer, Refrigeration and Air Conditioning

• The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called
• The air cooling system mostly used in transport type aircrafts is
• The evaporator used in house-hold refrigerators is
• The capacity of the cooling tower and spray ponds __________ as the wet bulb temperature of air decreases.
• Dehydration is the process of removing water vapour from the surrounding air.
• If the evaporator temperature is kept constant, the coefficient of performance of a refrigeration cycle __________ with the increase in condenser temperature.
• The heat transfer by conduction through a thick cylinder(Q) is given by (where T1 = Higher temperature, T2 = Lower temperature, r1 = Inside radius, r2 = Outside radius, l = Length of cylinder, and k = Thermal conductivity)
• The rato of energy transferred by convection to that by conduction is called
• Upto the critical radius of insulation,
• The critical thickness of insulation is the ratio of thermal conductivity of the insulating material (k) to the heat transfer coefficient at the outer surface of the insulation (h0).

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