A direct-heat dryer is to operate with air entering at 250F and 1 atm with a wet-bulb
Question:
A direct-heat dryer is to operate with air entering at 250°F and 1 atm with a wet-bulb temperature of 105°F. Determine from the psychrometric chart and/or relationships of Table 18.3 the following:
(a) Humidity.
(b) Molal humidity.
(c) Percentage humidity.
(d) Relative humidity.
(e) Saturation humidity.
(f) Humid volume.
(g) Humid heat.
(h) Enthalpy.
(i) Adiabatic-saturation temperature.
(j) Mole fraction of water in theair.
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 Охalic acid Zinc concentrate
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a Humidity Humidity H 00158 lb waterlb dry air b Molal humidity Molal humidity H m 00158289718...View the full answer
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