PreviousquestionNextquestion Transcribed Image Textfrom this Question 3. Calculations (60 marks) The air having a dry bulb temperature of to=20°C and wet bulb temperature of two=17°C is heated to...

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3. Calculations (60 marks) The air having a dry bulb temperature of to=20°C and wet bulb temperature of two=17°C is heated to 11=97 °C in a preheater and then employed to dry a wet solid material from the moist content w;=1.27% to wz=0.18% kg H2O/kg solid material (wet base). The temperature of the material increased from mi=31°C (entering the dryer) to 1m2=36°C (leaving the dryer). Now we know the dry bulb temperature at the outlet of the dryer is 12=-40°C and its wet bulb temperature of tw2=32°C. The material production rate is 4030 kg/h and the specific heat of the dried material is 1.26 kJ/kg • °C. There is no heat loss in the drying process. A) Calculate the amount water removed from the material per hour, i.e., W. (20 marks) B) Calculate the dried air flow rate L. (20 marks) C) Calculate the rate of heat needed in the preheater Qp. (20 marks