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Sibin Lazar
Engineering Student
 · ThrissurIndia
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How about an exercise machine can produce electricity at home…a mediam class family uses about 5 units of current per day…yes of course they pay for it.if we can save some energy it will help poor people to use that ectricity…think about it

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Subramanya Chakravarthy
Engineer
 · HyderabadIndia
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Hello Sibin,
Firstly the idea is good and I once read this news and it may help you
http://ourworld.unu.edu/en/lets_generate_electricity_by_walking
you can do it by using piezo sensors. Do some research hope you will find a solution soon.

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Sibin Lazar
Engineering Student
 · ThrissurIndia
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Thank you…me too heard about that but the peizo electric materials are too costly…

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Subramanya Chakravarthy
Engineer
 · HyderabadIndia
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A basic piezo set of 10 will cost only $5 give a try with them

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Sandhan Sarma
Engineer
 · GuwahatiIndia
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I never understood, why marathons are organized and what benefit they do. But, if marathons were done on treadmills with a generator attached to them, then it may really solve some real world problems 😄

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Robert Read
Public Inventor, PhD
 · AustinU.S.
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Let’s do some math here: My wife just ran the N.Y. marathon along with 52,000 other people. Let’s say she burned 2,000 calories (dietary calories are really kilocalories), which would be high. That makes approximately 100,000,000 kcal, or 116,222 kilowatt hours. According to this site: https://www.eia.gov/tools/faqs/faq.cfm?id=667&t=2 that is the equivalent energy of about 63 tons of coal.

People Calories Burned (kcal) Total kCal killoWatt Hour per kCal Total energy (kWatt Hrs) kwHr / ton of coal Tons of coal
52,000 2,000 104000000 0.00116222 120870.88 1,927 62.72489881

I seriously doubt we can solve the worlds energy problems by having 52,000 people exhaust themselves for the equivalent of 63 tons of coal. Coal costs about $50 per ton, transported. This makes a total cost of about $3100. In other words, 52,000 people running for 4 hours can produce about $3100 worth of energy, or about $0.06 per person. We must understand that human beings just cannot produce energy on the scale of the energy requirements of the modern world. Even in the ancient world, beasts of burden were used for plowing and cartage for a good reason. I believe mental energy spent trying to solve the world’s energy problem is better spent trying to use existing energy resources more efficiently than attempting to harness human energy.

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Sibin Lazar
Engineering Student
 · ThrissurIndia
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sir can we think about what subhramanya chakravarthy has said…??
why cant we use some peizo electric materials in this machine…can it make any difference…??

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