CH ENGR 101B Quiz: HW4
9 Jan 2019
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Read chapter 3. 5-3. 7: unique characteristics of biologically active materials such as fruits, vegetables, and other products require special care in handling. Following harvest and separation from producing plants, glucose is catabolized to produce carbon dioxide, water vapor, and heat, with attendant internal energy generation. Consider a carton of apples, each of 80 mm diameter, which is ventilated with air at 5 c and a velocity of 0. 5 m/s. The corresponding value of the heat transfer coefficient is 7. 5 w/m2 k. Within each apple thermal energy is uniformly generated at a total rate of 4000 j/kg day. Compute and plot the center and surface temperatures as a function of the air velocity for 0. 1 v 1 m/s: [abet] 3. 90 (in 8th edition, 3. 120 (in 8th edition)
