Convection equation thermodynamics

AI Thread Summary
The discussion revolves around calculating the temperature increase in a concert hall filled with 1800 people due to their metabolic heat output over 2 hours, assuming no ventilation. The initial temperature is given as 293K, with each person generating 70W of heat. Participants express confusion about how to approach the problem without using the convection equation. A suggestion is made to assume the room reaches a uniform temperature at equilibrium. The conversation highlights the challenge of interpreting the problem's requirements effectively.
yossup
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Homework Statement



An audience of 1800 fills a concert hall of volume 2.2×104 m^3. If there were no ventilation, by how much would the temperature of the air rise over a period of 2.0 h due to the metabolism of the people (70W/person)? Assume the room is initially at 293K.

Homework Equations





The Attempt at a Solution



I have no idea how to start this problem without using the convection equation...

can someone at least give me a hint on how to start this problem? this is so confusing...

thanks.
 
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yossup said:
An audience of 1800 fills a concert hall of volume 2.2×104 m^3. If there were no ventilation, by how much would the temperature of the air rise over a period of 2.0 h due to the metabolism of the people (70W/person)? Assume the room is initially at 293K.
…
I have no idea how to start this problem without using the convection equation...

Hi yossup! :smile:

Yup … bit of a daft question, isn't it? :rolleyes:

My experience of daft exam questions tells me that since it says "the temperature", it means that you should assume that the whole room has only one temperature, and somehow reaches equilibrium! :wink:
 
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