A wet polyester fabric has areal density of 160 g/m2. The initial temperature of the wet fabric is 20°C
Q. A wet polyester fabric has areal density of 160 g/m2. The initial temperature of the wet fabric is 20°C. After it is completely dried on a cylinder dryer, its areal density drops to 100 g/m2.
Consider,
- Specific heat of polyester as 2.0 J/g oC
- Specific heat of water as 4.2 J/g oC
- Latent heat of evaporation of water as 2260 kJ/kg
Assuming that there is no heat loss, the energy (kJ) required to dry 1 m2 of the fabric (rounded off to 2 decimal places) is .