Heat Transfer, Refrigeration and Air Conditioning - Section 1 (5)

The process of heat transfer from a hot body to a cold body, in a straight line, without affecting the intervening medium, is called radiation.

As relative humidity decreases, the dew point temperature will be __________ wet bulb temperature.

In aqua-ammonia and Lithium-bromide water absorption refrigeration systems, the refrigerants are respectively

The heat transfer by conduction through a thick sphere is same as through a thick cylinder.

Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow, and k = Thermal conductivity of the body)

The relative humidity is defined as

The heat transfer by conduction through a thick sphere is given by

According to Dalton's law of partial pressures, (where p_b = Barometric pressure, p_a = Partial pressure of dry air, and p_v = Partial pressure of water vapour)