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In a movie theater in winter, 510 people, each generation sensible heat at a rate of 80 W, are watching a movie. The heat losses through the walls, windows, and the roof are estimated to be 130,000 Btu/h. Determine the contribution of people to the heating of the building. The average rate of heat generation from people in a movie theater in sensible form is 80 W per person.

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Answer:

[tex]139213.68\ \text{Btu/h}[/tex]

Explanation:

Number of people = 510

Heat generated per person with respect to time = 80 W

[tex]1\ \text{W}=3.4121\ \text{Btu/h}[/tex]

Heat generated by 510 people is

[tex]\dot{Q}=510\times 80\times 3.4121[/tex]

[tex]\Rightarrow \dot{Q}=139213.68\ \text{Btu/h}[/tex]

The contribution of people to the heating of the building is [tex]139213.68\ \text{Btu/h}[/tex]

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