4. Air, originally at 14°C with 7 g water/kg of dry air, is heated to 48°C and then passed over a shelf in a tray drier and the air is saturated to 80% relative humidity. Then, air is reheated to 48°C by heaters and send to pass over a second shelf and the air is saturated to 70% relative humidity. Drying on each shelf occurs adiabatically. Determine a) the temperature of the air at the end of each shelf b) the temperature of the material on each shelf c) the rate of removal of water (in kg/h) if 0.05 m³/h of moist air enters the drier.

4. Air, originally at 14°C with 7 g water/kg of dry air, is heated to 48°C and then passed over a shelf in a tray drier and the air is saturated to 80% relative humidity. Then, air is reheated to 48°C by heaters and send to pass over a second shelf and the air is saturated to 70% relative humidity. Drying on each shelf occurs adiabatically. Determine a) the temperature of the air at the end of each shelf b) the temperature of the material on each shelf c) the rate of removal of water (in kg/h) if 0.05 m³/h of moist air enters the drier.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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