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1 - Overview Of A Cotton Gin 2 - Page 3 3 - Page 4 4 - Page 5 5 - Page 8 6 - Page 6 7 - Page 7 8 - Page 9 9 - Page 10 10 - Page 1

In the first stage of drying, heated air conveys the cotton through the shelves for 10-15 sec. The temperature of the conveying air is regulated to control the amount of drying. To prevent fiber damage, the temperature to which the cotton is exposed during normal operation should never exceed 350 F. Temperatures above 300 F can cause permanent physical changes in cotton fibers. Dryer-temperature sensors should be located as near as possible to the point where cotton and heated air mix together. If the temperature sensor is located near the exit of the tower dryer, the mixpoint temperature could actually be 100-200 F higher than the temperature at the downstream sensor. The temperature drop downstream results from the cooling effect of evaporation and from heat loss through the walls of machinery and piping.

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