Assuming lumped heat transfer, think that in a cold winter day, you are leaving your house with your hot coffee at 90 C. The time constant of the coffee is 2 minutes. Determine its temperature after 4 minutes if the ambient temperature is O C?

Assuming lumped heat transfer, think that in a cold winter day, you are leaving your house with your hot coffee at 90 C. The time constant of the coffee is 2 minutes. Determine its temperature after 4 minutes if the ambient temperature is O 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.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.39P: The tip of a soldering iron consists of a 0.6-cm- diameter copper rod, 7.6 cm long. If the tip must...

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Question

Assuming lumped heat transfer, think that in a cold winter day, you are
leaving your house with your hot coffee at 90 C. The time constant of the
coffee is 2 minutes. Determine its temperature after 4 minutes if the
ambient temperature is O C?
None of the above
21.4 C
O 45 C
Not sufficient information
12.6 C
4.5 C

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