Aerosol particles 0.001 inch in diameter with specific gravity 0.8 are to be settled from an air stream. If the settling chamber is 2 ft deep, what should the residence time be? At the process conditions, pf =0.08 lb/ft3, pp = (0.8)62.4 =49.92 lb/ft3 , and µ(air) = 0.02 cP.

a piece of beef steak 7 cm thick will be frozen in the freezer room -40 degrees Celsius This product has a moisture content of 73% density 970 kg / m³ and a thermal conductivity of 1.1 W / (m K) frozen using the plank equation. This product has an initial freezing temperature of -1.75 degrees Celsius and the movement of air in the raw chamber gives a convection heat transfer coefficient of 10 W / (m² K). tf =

Heat transfer

A food product with 73% moisture content in a 5 cm diameter can wants to be frozen. Density of the product is 970 kg / m³ thermal conductivity is 1.2 W / (m K) and the initial freezing temperature is -2 degrees Celsius after 12 hours in the freezing medium -30 degrees Celsius The product temperature becomes -10 degrees Celsius estimated heat transfer coefficient convection of freezing medium. assume the can as an infinite cylinder . h =

Kindly Give Step by Step Answers Q: Blow air onto your hand with your mouth wide open and then your lips puckered. When does the air look cooler and why ? Assume the process is fast that Q=0.

3