Bonsoir
I do not know if this document has already passed?
https://www.econologie.com/stockage-et-p ... -3133.html
Interesting information where I saw that (unfortunately) energy by means of compressed air has a lower energy / weight ratio than batteries for example. Interesting energy production by the human body etc ...
Michel
Energy production from the human body
Interesting if a little too technical for my meager memories of physics.
Do you know if there is a device of this type adaptable to a digital camera?
Indeed, if this type of device makes many savings on developments, in terms of electrical consumption, compared to a film equivalent, it is the cat !!!
Result: in at least 50% of the cases, when you want to take a photo, the batteries are exhausted
I am astonished that nobody has yet marketed a dynamo device (type zipper) that is fixed to the standard thread under the device (to put it on a stand) and which provides enough to take 2 or 3 photos .
Do you know if there is a device of this type adaptable to a digital camera?
Indeed, if this type of device makes many savings on developments, in terms of electrical consumption, compared to a film equivalent, it is the cat !!!
Result: in at least 50% of the cases, when you want to take a photo, the batteries are exhausted
I am astonished that nobody has yet marketed a dynamo device (type zipper) that is fixed to the standard thread under the device (to put it on a stand) and which provides enough to take 2 or 3 photos .
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"Anyone who believes that exponential growth can continue indefinitely in a finite world is a fool, or an economist." KEBoulding
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Re: Energy production for portable devices
MichelM wrote:Interesting information where I saw that (unfortunately) energy by means of compressed air has a lower energy / weight ratio than batteries for example. Interesting energy production by the human body etc ... Michel
Thanks for the .pdf I didn't know it. I will add it to the site.
Otherwise nothing surprising for the air ... all those who have already used pneumatic tools know it very well ...
In the same genre but in English: https://www.econologie.com/stockage-de-l ... t-241.html
Ps: for the long link we have described the procedure to follow here: https://www.econologie.com/forums/creer-et-m ... t2193.html I corrected for this time but be careful for the rest. Thank you
Last edited by Christophe the 30 / 06 / 09, 11: 50, 1 edited once.
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Very interesting this document ... I will reformulate the title of the Topic which does not stick well I think.
Metabolic heat: 80 W at rest at more than 1 kW in intense activity
Ahh finally a value of the output of a human body to "work" page 4.
But low mechanical conversion efficiency:
for 200 W mechanical, more than 800 W of heat and fatigue…
Or roughly 20% ... Finally "we" are no better than a good diesel
ps: I posted this subject and put the .pdf on the site (in case the source is no longer available) https://www.econologie.com/stockage-et-p ... -3133.html
Metabolic heat: 80 W at rest at more than 1 kW in intense activity
Ahh finally a value of the output of a human body to "work" page 4.
But low mechanical conversion efficiency:
for 200 W mechanical, more than 800 W of heat and fatigue…
Or roughly 20% ... Finally "we" are no better than a good diesel
ps: I posted this subject and put the .pdf on the site (in case the source is no longer available) https://www.econologie.com/stockage-et-p ... -3133.html
Last edited by Christophe the 30 / 06 / 09, 11: 51, 1 edited once.
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Do a image search or an text search - Netiquette of forum
See also: https://www.econologie.com/electronique- ... -4093.html
You will find in particular the sources of information for each device if you want to know more.
You will find in particular the sources of information for each device if you want to know more.
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- Gregconstruct
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- Gregconstruct
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- Lietseu
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Targol wrote:Interesting if a little too technical for my meager memories of physics.
Do you know if there is a device of this type adaptable to a digital camera?
Indeed, if this type of device makes many savings on developments, in terms of electrical consumption, compared to a film equivalent, it is the cat !!!
Result: in at least 50% of the cases, when you want to take a photo, the batteries are exhausted
I am astonished that nobody has yet marketed a dynamo device (type zipper) that is fixed to the standard thread under the device (to put it on a stand) and which provides enough to take 2 or 3 photos .
What you say is true for small devices, like I put it in my pocket ...
They have a major drawback, their screens (sometimes very large) do not only have advantages, they consume a lot!
With my Reflex canon 350D, I can take on the same battery + 250 Photos (family events) and nothing prevents having a reserve battery, right? I use this device for 2 years, I have not yet changed the battery, it enlightens you?
The above, I wish you good evening and I will see: Seen from the Sky…
Good night
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By removing Human Nature, he was far from his nature! Lietseu
"The power of love, must be stronger than the love of power" contemporary Lie Tzu?
One sees clearly only with the heart, the essential is invisible to the eyes ...
"The power of love, must be stronger than the love of power" contemporary Lie Tzu?
One sees clearly only with the heart, the essential is invisible to the eyes ...
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Lietseu wrote:With my Reflex canon 350D, I can take on the same battery + 250 Photos (family events) and nothing prevents having a reserve battery, right? I use this device for 2 years, I have not yet changed the battery, it enlightens you?
With the same camera as you, I made more than 500 photos at the world cup of mountain biking in Houffalize and the battery was not rubbish!
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Every action counts for our planet !!!
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