Chemical Engineering - Heat Transfer

Baffles are provided in heat exchangers to increase the

200 kg of solids (on dry basis) is subjected to a drying process for a period of 5000 seconds. The drying occurs in the constant rate period with the drying rate as, N_c = 0.5 x 10^-3 kg/m².s. The initial moisture content of the solid is 0.2 kg moisture/kg dry solid. The interfacial area available for drying is 4 m²/1000 kg of dry solid. The moisture content at the end of the drying period is (in kg moisture/kg dry solid)

In case of a vertical tube evaporator, with increase in the liquor level, the

The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoffs law.

For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally