A well-mixed cement-lined storage tank contains water initially at 50°C. The water loses energy to its surroundings via conduction through the tank's concrete-lined walls. The tank sits in an unheated warehouse with an air temperature of 0°C. A diagram of the storage tank is shown below. The cement lining is 1.5-cm thick and has a thermal conductivity (htc) of 2.0 W/(m K). height = 1.5 m diameter = 2.0 m a. How long will it take (in minutes) for the water to cool to 40°C?
A well-mixed cement-lined storage tank contains water initially at 50°C. The water loses energy to its surroundings via conduction through the tank's concrete-lined walls. The tank sits in an unheated warehouse with an air temperature of 0°C. A diagram of the storage tank is shown below. The cement lining is 1.5-cm thick and has a thermal conductivity (htc) of 2.0 W/(m K). height = 1.5 m diameter = 2.0 m a. How long will it take (in minutes) for the water to cool to 40°C?
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter3: Transient Heat Conduction
Section: Chapter Questions
Problem 3.12P
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![3. A well-mixed cement-lined storage tank contains water initially at 50°C. The water loses
energy to its surroundings via conduction through the tank's concrete-lined walls. The
tank sits in an unheated warehouse with an air temperature of 0°C.
A diagram of the storage tank is shown below. The cement lining is 1.5-cm thick and has
a thermal conductivity (htc) of 2.0 W/(m K).
height = 1.5 m
diameter = 2.0 m
a. How long will it take (in minutes) for the water to cool to 40°C?
b. Why might you be over- or underestimating the time it will take to cool the
contents of the reactor?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F87096348-0cc0-41ed-b7c0-aba7cd75783c%2Fc0dbb07d-ef54-4c7f-aae7-dcb1fb4e2e7c%2Fszjgrps_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3. A well-mixed cement-lined storage tank contains water initially at 50°C. The water loses
energy to its surroundings via conduction through the tank's concrete-lined walls. The
tank sits in an unheated warehouse with an air temperature of 0°C.
A diagram of the storage tank is shown below. The cement lining is 1.5-cm thick and has
a thermal conductivity (htc) of 2.0 W/(m K).
height = 1.5 m
diameter = 2.0 m
a. How long will it take (in minutes) for the water to cool to 40°C?
b. Why might you be over- or underestimating the time it will take to cool the
contents of the reactor?
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