A cooling duct receives air at 1 atm, 32°C, and 70% relative humidity with a velocity of 120m/min. This air passes over cooling coils filled with flowing water. This steadily flowing water experiences a for temperature rise during its time in the cooling duct coils. Meanwhile, the airflow leaves the cooling section saturated at 20°C. Determine (a) the rate of heat transfer, (b) the mass flow rate of the cooling water, (c) the flow rate of any condensate formed, and (d) the exit velocity of the air stream. Assume the cooling water has constant specific heat. Feel free to use the psychrometric chart on the next page for the air properties.
A cooling duct receives air at 1 atm, 32°C, and 70% relative humidity with a velocity of 120m/min. This air passes over cooling coils filled with flowing water. This steadily flowing water experiences a for temperature rise during its time in the cooling duct coils. Meanwhile, the airflow leaves the cooling section saturated at 20°C. Determine (a) the rate of heat transfer, (b) the mass flow rate of the cooling water, (c) the flow rate of any condensate formed, and (d) the exit velocity of the air stream. Assume the cooling water has constant specific heat. Feel free to use the psychrometric chart on the next page for the air properties.
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
A cooling duct receives air at 1 atm, 32°C, and 70% relative humidity with a velocity of 120m/min. This
air passes over cooling coils filled with flowing water. This steadily flowing water experiences a for
temperature rise during its time in the cooling duct coils. Meanwhile, the airflow leaves the cooling
section saturated at 20°C. Determine (a) the rate of heat transfer, (b) the mass flow rate of the cooling
water, (c) the flow rate of any condensate formed, and (d) the exit velocity of the air stream. Assume
the cooling water has constant specific heat. Feel free to use the psychrometric chart on the next page
for the air properties.
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