Air at 1 atm, 200F, and a relative humidity of 15% enters a direct-heat dryer. Determine the
Question:
Air at 1 atm, 200°F, and a relative humidity of 15% enters a direct-heat dryer. Determine the following from the psychrometric chart and/or relationships of Table 18.3.
(a) Wet-bulb temperature.
(b) Adiabatic-saturation temperature.
(c) Humidity.
(d) Percentage humidity.
(e) Saturation humidity.
(f) Humid volume.
(g) Humid heat.
(h) Enthalpy.
(i) Partial pressure of water in the air.
Transcribed Image Text:
Table 18.3 Materials Dried in Direct-heat Rotary Dryers Ammonium nitrate prills Sand Ammonium sulfate Sodium chloride Blast furnace slag Sodium sulfate Calcium carbonate Stone Cast-iron borings Styrene Sugar beet pulp Urea crystals Urea prills Vinyl resins Cellulose acetate Coppers Fluorspar Illmenite ore Oxalic acid Zinc concentrate
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