Energy required per day for survival by an individual

  • Thread starter Thread starter n.karthick
  • Start date Start date
  • Tags Tags
    Energy Per
AI Thread Summary
An average individual requires approximately 2,000 calories per day for survival, which translates to about 8.4 megajoules or 2.3 kilowatt-hours. This energy consumption aligns with the typical metabolic rate, where a person burns energy at roughly 100 watts continuously. Over a 24-hour period, this results in an energy expenditure of about 2.4 kilowatt-hours. The discussion clarifies that food calories are often referred to as kilocalories, emphasizing the importance of accurate conversions. Understanding these energy requirements is crucial for discussions on human survival and energy consumption.
n.karthick
Messages
245
Reaction score
0
I want to know how much energy is required by an average individual per day for his survival, assuming he is doing normal work. is there any rough estimate? (say some thousands of joules !). I like to know this rough value and I want to convert this is to electrical equivalent (i.e, in kWhr). In brief, assuming that a human can live by consuming only electricity, how much units (kWhr) is required for him every day?
 
Physics news on Phys.org
Two thousand calories per day for an average person so: 2 kcal = 8.3736 kilojoules = 0.002326 kwhr

iron_john
 
This is wrong. A food calorie is actually a kilocalorie. So it is actually 8.4 MJoules, or 2.3 kWh. You burn energy at about 100W - 100W * 24 Hr = 2.4 kWh.
 

Thread 'Why can't Solar panels be hemispherical, or a curved strip type?'

comparing a flat solar panel of area 2π r² and a hemisphere of the same area, the hemispherical solar panel would only occupy the area π r² of while the flat panel would occupy an entire 2π r² of land. wouldn't the hemispherical version have the same area of panel exposed to the sun, occupy less land space and can therefore increase the number of panels one land can have fitted? this would increase the power output proportionally as well. when I searched it up I wasn't satisfied with...
View full post »

Similar threads

B Converting 10 PSI to Electrical Energy
Replies
15
Views
6K
MHB Conversion KWH of energy per day to Joules in a year
Replies
1
Views
3K
B Did I Just Create 2.5 Kilograms of Energy?
Replies
15
Views
2K
Energy required to keep a mass in the air
Replies
11
Views
15K
Why the fascination with intermittent renewable energy sources?
Replies
35
Views
7K
How many items does Amazon need to sell per day to justify market cap?
Replies
6
Views
1K
How much energy did the Thanos snap release, approximately?
Replies
12
Views
4K
I Why does the main muscle use the most energy in body movements?
Replies
24
Views
2K
Electronics Rule of thumb for derating Solar Energy off-grid energy systems
Replies
7
Views
4K
A Photons per unit of Energy in Cherenkov radiation?
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top