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Topic Title: Gravity Generator.
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Created On: 12 June 2018 10:12 AM
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 12 June 2018 10:12 AM
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Zoomup

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Could this new device of Janjaap Ruijssenaars be a solution to the energy crisis? It is a gravity energy generator. Do they actually work?

http://www.reuters.com/video/2...tio?videoId=431137591

Z.

Edited: 12 June 2018 at 10:18 AM by Zoomup
 12 June 2018 10:54 AM
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AJJewsbury

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I'm not convinced - his own figure of 93% implies you get less energy out than you put in - which makes sense as even if gravity helps on one half of the oscillation it's going to be equally against you on the other half.

If you really want gravity to help generate electricity you need something else (free) to do the heavy work on the 'lifting' half of the cycle - like hydro electric plants where mother nature lifts the water from the seas back to the mountain tops for you.

- Andy.
 12 June 2018 11:00 AM
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mapj1

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It does not, despite the hype, generate energy from gravity, it generates energy from motion in a gravitational field. the motion has to come from somewhere, and in converting it to electricity the mechanical motion is attenuated to some degree. However it allows us to harness types of motion that are too slow or to erratic to be converted using a normal rotating coils sort of genset. The idea may have niche applications, such as powering electronics in places where there is vibration but conventional power supply would be very hard, such as on propeller tips or in parts of engines. In some ways it is similar in operation, to the self winding watch, but internally quite different.


edit. My money on the best gravitation solution to energy generation in a big way is tidal, and as a bonus, if we take enough energy out it may slow down coastal erosion a bit. (As well as move the moon further away over many many millenia, and lengthen the day)

-------------------------
regards Mike


Edited: 12 June 2018 at 11:11 AM by mapj1
 12 June 2018 11:30 AM
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broadgage

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Perpetual motion is very last year
 12 June 2018 11:45 AM
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AJJewsbury

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Perpetual motion is very last year

yeah, but it keeps coming back....
(sorry)
- Andy.
 12 June 2018 08:37 PM
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Legh

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edit. My money on the best gravitation solution to energy generation in a big way is tidal, and as a bonus, if we take enough energy out it may slow down coastal erosion a bit. (As well as move the moon further away over many many millenia, and lengthen the day)


Lol....What?

There was a chap who designed a large boot which he dumped in the Pentland Firth, water passed backward and forward generating a piston like motion which no doubt turned a crank. Lasted about 24 hours before the tidal movement ripped it apart.

Not sure about the second part bonus ........

Legh

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http://www.leghrichardson.co.uk

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 12 June 2018 10:34 PM
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AJJewsbury

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There was a chap who designed a large boot which he dumped in the Pentland Firth, water passed backward and forward generating a piston like motion which no doubt turned a crank. Lasted about 24 hours before the tidal movement ripped it apart.

Perhaps he should have tried in Wales - there's a long tradition of successfully harnessing tidal power there - e.g. http://en.wikipedia.org/wiki/Carew_Tidal_Mill

- Andy.
 13 June 2018 03:05 PM
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Legh

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Originally posted by: AJJewsbury

There was a chap who designed a large boot which he dumped in the Pentland Firth, water passed backward and forward generating a piston like motion which no doubt turned a crank. Lasted about 24 hours before the tidal movement ripped it apart.


Perhaps he should have tried in Wales - there's a long tradition of successfully harnessing tidal power there - e.g. http://en.wikipedia.org/wiki/Carew_Tidal_Mill



- Andy.


You maybe right for small scale energy generation from estrary tidal flows as they are likely to be somewhat limited in power output. Not quite on the same scale as the Alantic....

Legh

-------------------------

http://www.leghrichardson.co.uk

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 13 June 2018 03:47 PM
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psychicwarrior

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what about this as a solution... mind boggles :-) http://blogs.discovermagazine....r-solar-power-plants/

(the link is just one reference of many on the idea)
 13 June 2018 04:08 PM
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mapj1

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Beaming the solar energy back with microwaves , if it were to ever be tried, would have my toes curling. It would be safer to beam it to earth as light, like the spot from a big magnifying glass - at least we would be able to see it, the same intensity in microwaves would be just as lethal but invisible up to the point it tears the atoms of the air apart, and leaves a visible plasma trail in the air.

-------------------------
regards Mike
 13 June 2018 04:24 PM
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psychicwarrior

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the first few comments in the comments section of that lunar solar ring, made me smile!
 13 June 2018 04:31 PM
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Nedryerson

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Like this ?

https://www.youtube.com/watch?v=SWcdDwECZU0
 13 June 2018 04:34 PM
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AJJewsbury

Posts: 17169
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Not to mention a global power cut during every lunar eclipse?
- Andy.
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