The slabs of building boards contain 17% moisture by weight. They are dried to a water content
of 1% by weight by circulating hot air over them. The fresh air contains 0.17 kg of moisture per
kg. The exhaust air contains 0.075 kg of moisture per kg. How many cubic metres of fresh air at
standard conditions must be used per 2000 kg of the wet building boards?
1.08 factor also contains the specific density of air (0.075 pounds per cubic foot). The air is measured in CFM, yet the specific heat is per pound of air. The weight per cubic foot of air (0.075 lbs) is needed to convert between the air volume and weight. Also contained in the 1.08 factor is the number of minutes in an hour (60 minutes per hour).Calculate the volume of the air freight shipment. Volume = length X width X height Step 2: Convert the imperial measurement (cubic inches) into cubic meters To convert cubic inches into cubic meters, follow this formula: 61,024 cubic inches = 1 cbm.