3-10 A cooling tower is a device that cools spray water by passing it through a stream of air. If 15m³/s of air at 35°C dry-bulb and 24°Cwet-bulb temperature and an atmospheric pressure of 101kPa enters the tower and the air leaves saturated at 31°C, (a) to what temperature can this airstreams cool a spray of water entering at 38°C with a flow rate of 20kg/s and (b) how many kilograms per second of makeup water must be added to compensate for the water that is evaporated? Ans. 31.3°C, (b) 0.245kg/s.

3-10 A cooling tower is a device that cools spray water by passing it through a stream of air. If 15m³/s of air at 35°C dry-bulb and 24°Cwet-bulb temperature and an atmospheric pressure of 101kPa enters the tower and the air leaves saturated at 31°C, (a) to what temperature can this airstreams cool a spray of water entering at 38°C with a flow rate of 20kg/s and (b) how many kilograms per second of makeup water must be added to compensate for the water that is evaporated? Ans. 31.3°C, (b) 0.245kg/s.

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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Question

3-10 A cooling tower is a device that cools spray water by passing it through a
stream of air. If 15m³/s of air at 35°C dry-bulb and 24°Cwet-bulb temperature
and an atmospheric pressure of 101kPa enters the tower and the air leaves
saturated at 31°C, (a) to what temperature can this airstreams cool a spray of
water entering at 38°C with a flow rate of 20kg/s and (b) how many kilograms
per second of makeup water must be added to compensate for the water that is
evaporated? Ans. 31.3°C, (b) 0.245kg/s.

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