HEat energy given off by a person

AI Thread Summary
The discussion focuses on calculating the heat energy emitted by a person in a classroom setting for an air conditioning project. It is noted that the typical range for heat output is between 100 to 150 watts, which is considered realistic for a person sitting at a desk in casual clothing. Participants confirm that using 100 watts per person is a standard practice in engineering calculations for heat load. The conversation emphasizes the importance of accurate measurements for effective air conditioning requirements. Understanding these heat outputs is crucial for maintaining comfortable classroom temperatures.
Juvenile
Messages
1
Reaction score
0
My physics class is doing a project where we need to calculate the airconditioning requirements for our class room.
I need to find out the amount of heat energy given off by a person sitting at a desk, wearing shorts and tshirt.
I have found some sites that state 100watts to 150watts
Is this realistic?
 
Physics news on Phys.org
find the amount of calories you burn in a certain amount of time. Work from there.

Regards,

Nenad
 
Juvenile said:
My physics class is doing a project where we need to calculate the airconditioning requirements for our class room.
I need to find out the amount of heat energy given off by a person sitting at a desk, wearing shorts and tshirt.
I have found some sites that state 100watts to 150watts
Is this realistic?
Yes ... 100 Watts per person is often used for engineering calculations of heat load.


~~
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

How to Calculate Potential Energy and Latent Heat in Physics?
Replies
9
Views
2K
Heat energy and liquid nitrogen boil-off rate
Replies
1
Views
3K
Heat Transfer and Capacity: Understanding Specific Heat and Latent Heat
Replies
21
Views
4K
What is the difference between heat and internal energy?
Replies
13
Views
2K
Entropy and the Laws of Thermodynamics
Replies
3
Views
1K
Thermal Physics (Specific Heat Capacity)
Replies
1
Views
4K
Volume of water required to cool thermal/nuclear plants?
Replies
3
Views
2K
Calculating time to reduce alcohol in wine using heating method
3
Replies
131
Views
8K
Energy Conservation and the Dragons (Game of Thrones)
Replies
18
Views
2K
Find heat loss given metabolic rate in a closed system
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top