How much heat does the Human body put into the atmosphere?

Question

The Human body maintains a constent temperature, can that not be converted to the BTU in a period certian? Say a 24 hour day???
Does it matter that I just ate and apple if I don't care how much heat the apple produced?
I can not imagain that this is that hard a question.

Answer 1

We are used to talk about calories when we talk about human body. Calorie is unit of energy just like heat is. Most of the food we consume converts sooner or later into body heat. 1 calorie = 0.00465 kWh. So if you use 1000 to 5000 calories per day it translates to 4.6 to 23 kWh per day. Since day has 24 hours this translates to a light bulb of 190 -1000Watts

Answer 2

When I worked in the emergency preparedness business, we used a 60 W light bulb as our rule of thumb for equivalent heat produced by an average person. I saw 100 W as another answer. I think that's reasonable too. They are both just informed guesses because each person clearly would have his or her own heat.

The heat used in our studies assumed people at rest; so the so-called basal metabolism heat was assumed. If your bodies are working, they will produce more than the 60 or 100 W suggested here.

Answer 3

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Answer 5

I hear it is the same as a 100 watt light bulb.