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categoryهندسة كيميائية schoolبكالوريوس event_available2026-07-15

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A laboratory drying test was made on a 0.1 m² sample of a fibrous board-like material. The sample was suspended from a balance, its edges were sealed, and drying took place from the two large faces. The air had a dry bulb temperature of 65 °C, wet bulb temperature 29 °C, and its velocity was 1.5 m/s past the sample. The following Table 1 is the weights recorded at various times during the test. The sample was then dried in an oven at 110 °C for 8 hours and the dry mass was 3.765 kg. i) Construct the rate of drying curve M15 Marksl Table 1 Time, Moisture Time, Moisture Time, Moisture Content, h h Content, h kg total kg total water/kg water/kg Content, kg total water/kg dry solid dry solid dry solid 0 0.28 3.0 0.13 7.0 0.032 0.1 0.276 3.4 0.117 7.5 0.028 Go Top 0.2 0.27 3.8 0.10 8.0 0.025 0.4 0.26 4.2 0.089 9.0 0.02 ary sona ary sona ary sona 0 0.28 3.0 0.13 7.0 0.032 0.1 0.276 3.4 0.117 7.5 0.028 0.2 0.27 3.8 0.10 8.0 0.025 0.4 0.26 4.2 0.089 9.0 0.02 0.8 0.24 4.6 0.078 10.0 0.017 1.0 0.23 5.0 0.066 11 0.0159 1.4 0.212 5.4 0.057 12 0.0148 1.8 0.193 5.8 0.048 14 0.0143 Go Top 2.2 0.173 6.0 0.044 16 0.0143 2.6 0.153 6.5 0.037

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