Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 23-09-2014, 15:28   #16
Registered User
 
MBWhite's Avatar

Join Date: Apr 2012
Location: Illinois
Boat: Hurley Alacrity
Posts: 370
Re: The Missing Link of Power Generation

What you are proposing can indeed produce power, the question is whether or not it can generate enough power to be useful for anything other than an LED.

There used to be towed generators, and since you do not really see them anymore (then again I lead a sheltered life) I suspect it would be difficult to find an improvement in mechanical generation that has not been thought of in the last 100 years unless some new technology comes along at some point.
__________________

__________________
MBWhite is offline   Reply With Quote
Old 23-09-2014, 16:45   #17
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,812
Re: The missing link of power generation

Quote:
Originally Posted by ssanzone View Post
now i am a smart guy but... c'mon!

this is a great link. kinda defeating to think that all these great ideas have fallen apart but... i do like a challenge (i.e i am foolish enough to not learn from other's mistakes).
The formula looks off a bit. The 8 seconds wave peak (if that is what it is would not be an additive but a devisor I think.

With a single action ratchet, your only getting the up portion of the lift, the down side would require a double ratching drive for up and down. For small waves you would need a huge float surface area to generate meaningful energy.

Solar has no moving parts to fail and works rather well. 1 square meter of solar currently makes about ~200 watts. The total energy in sunlight is roughly a KW per square meter, if the panels were 100% efficient. Same applies to wave power, the actual energy transferred would never be 100%. Sticksion in bearings and generator efficiency's drop that quite a bit.
__________________

__________________
sailorchic34 is offline   Reply With Quote
Old 23-09-2014, 22:48   #18
Registered User
 
ryon's Avatar

Join Date: Feb 2013
Location: Southern California
Posts: 588
Re: The missing link of power generation

Quote:
Originally Posted by ssanzone View Post
now i am a smart guy but... c'mon!

this is a great link. kinda defeating to think that all these great ideas have fallen apart but... i do like a challenge (i.e i am foolish enogh to not learn from other's mistakes).
Learning why things didn't work can be just as interesting as learning about those that do!

__________________
ryon is offline   Reply With Quote
Old 23-09-2014, 23:05   #19
Registered User
 
nimblemotors's Avatar

Join Date: Apr 2011
Location: Sacramento, California
Boat: Solar 40ft Cat :)
Posts: 1,557
Re: The Missing Link of Power Generation

I would think a simple method and what shows how much energy you get,
are those flashlights that you shake to charge up. They have a magnet and coil,
and moving the magnet past the coil charges up a cap.
So now put this flash light on a bobbing float, and with the right weight or magnet it should charge itself from waves. That might indicate the level of energy to harvest, i.e. not much.

__________________
JackB
MiniMPPT Solar Controller
nimblemotors is offline   Reply With Quote
Old 24-09-2014, 12:45   #20
Registered User
 
Cadence's Avatar

Join Date: Dec 2008
Location: SC
Boat: None,build the one shown of glass, had many from 6' to 48'.
Posts: 6,057
Re: The Missing Link of Power Generation

Quote:
Originally Posted by ssanzone View Post
i figure i must be missing something...

if i hung a weighted line in the water with a float attached a few feet above the weight and ran that line up to a pulley and back down a flywheel with a belt connected to an alternator...

dosnt it make sense that the line would bob in the water, pulling the line, turning the flywheel, spinning the alternator and charge the batteries?

the cost would be under a few hundred for everything to fabricate this including a 120v alternator.

adding multiple flywheels would result in more turns of the alternator per 'bob'.

it would not be a persistent power source and the output would new be on par with a big solar panel but kinda a perpetual kinetic trickle charger to keep the house bank topped off.

-steve
I'm sorry! I can't help myself. I suggest a good book on physics and possibly one defining the kinetic energy needed to generate a watt. I'm not intending to be negative but you asked what you where missing. I think, you will come to the reality that the float size, weight and sea conditions required make this impossible. Maybe someone will invent a super efficient gen. to make it feasible some day. Don't give up on ideas great inventions are sometimes the simplest.
__________________
Cadence is offline   Reply With Quote
Old 24-09-2014, 13:05   #21
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,037
Re: The Missing Link of Power Generation

The float could be the boat, the line the anchor line with a spring to retract the line when slack and spinning a flywheel on the boat to carry the energy between cycles of the boat pitching. How much energy do you think there is in a 25,000 lb boat pitching up and down? Take ahold of the anchor line sometime and try to stop the pitching to get an idea, it's lots.
It could work, matter of fact I'm sure it would work.
Probably not as well as a Solar panel though, and that is the issue, more reliable power available for less money and hassle elsewhere.
__________________
a64pilot is offline   Reply With Quote
Old 24-09-2014, 13:16   #22
Registered User

Join Date: Jul 2011
Location: Alameda, CA
Boat: C&C Newport 41
Posts: 586
Re: The Missing Link of Power Generation

Well... no.

With a proper pulley i can lift 10K lbs while smoking a cigarette and writing a haiku.

By introducing a set of multi-sized gears even 6" of travel, in the float, can result in hundreds of RPMs at the endpoint (alternator). I accept that this is 1. vastly more complex than originally described and 2. does not equate consistency.

there is really no question of if an alternator will charge the house bank but what method can be designed to turn the alternator at a necessary constant.

the missing component is how to result perpetual motion.
__________________
ssanzone is offline   Reply With Quote
Old 24-09-2014, 14:08   #23
Registered User
 
Terra Nova's Avatar

Join Date: Apr 2007
Location: Marina del Rey, California
Boat: Freya 39 cutter- Terra Nova
Posts: 3,645
Re: The Missing Link of Power Generation

a64--seems right to me, too.

How about using the force directly onto a piezoelectric crystal which itself produces the power? No moving parts.
__________________
1st rule of yachting: When a collision is unavoidable, aim for something cheap.
"whatever spare parts you bring, you'll never need"--goboatingnow
"Id rather drown than have computers take over my life."--d design
Terra Nova is offline   Reply With Quote
Old 24-09-2014, 14:16   #24
Registered User
 
Cadence's Avatar

Join Date: Dec 2008
Location: SC
Boat: None,build the one shown of glass, had many from 6' to 48'.
Posts: 6,057
Re: The Missing Link of Power Generation

Quote:
Originally Posted by ssanzone View Post
Well... no.

With a proper pulley i can lift 10K lbs while smoking a cigarette and writing a haiku.

By introducing a set of multi-sized gears even 6" of travel, in the float, can result in hundreds of RPMs at the endpoint (alternator). I accept that this is 1. vastly more complex than originally described and 2. does not equate consistency.

there is really no question of if an alternator will charge the house bank but what method can be designed to turn the alternator at a necessary constant.

the missing component is how to result perpetual motion.
__________________
Cadence is offline   Reply With Quote
Old 24-09-2014, 17:06   #25
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,037
Re: The Missing Link of Power Generation

Quote:
Originally Posted by ssanzone View Post

the missing component is how to result perpetual motion.

You figure that out, and you will be set for life. Your name will be celebrated as the greatest genius that was ever born

Just pulling your leg, I know you didn't mean what it sounds like
__________________
a64pilot is offline   Reply With Quote
Old 24-09-2014, 17:23   #26
Registered User
 
Cadence's Avatar

Join Date: Dec 2008
Location: SC
Boat: None,build the one shown of glass, had many from 6' to 48'.
Posts: 6,057
Re: The Missing Link of Power Generation

Quote:
Originally Posted by a64pilot View Post
You figure that out, and you will be set for life. Your name will be celebrated as the greatest genius that was ever born

Just pulling your leg, I know you didn't mean what it sounds like
I hope you took it as I was agreeing with you. I rag people when I don't agree. ****, I may learn something when they respond. I hope I don't offend anyone by possibly sounding crass.
__________________
Cadence is offline   Reply With Quote
Old 24-09-2014, 17:46   #27
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: The Missing Link of Power Generation

Quote:
the missing component is how to result perpetual motion.
You pull this off and you could buy a Watt & Sea hydro-generator.
__________________
The Blue Dot Campaign. This Changes Everything.
DeepFrz is offline   Reply With Quote
Old 24-09-2014, 18:48   #28
Registered User
 
Cadence's Avatar

Join Date: Dec 2008
Location: SC
Boat: None,build the one shown of glass, had many from 6' to 48'.
Posts: 6,057
Re: The Missing Link of Power Generation

Quote:
Originally Posted by DeepFrz View Post
You pull this off and you could buy a Watt & Sea hydro-generator.
I take it they are not advisable? I did read a few inputs on them. I don't think I'd want one.
The unanswered question, in my mind if I even understood what they are, is what is the resulting drag under way?

Am I totally lost, thinking you stick it in the water and generate power from driving a "prop or turbine", for lack of a better term, with your forward motion?

Let me know if I am totally in the dark?
__________________
Cadence is offline   Reply With Quote
Old 24-09-2014, 20:12   #29
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: The Missing Link of Power Generation

That was actually meant as a reference to a different thread by the OP.

The Watt & Sea hydro-generators are used on virtually all long distance racing boats but in the last Vendee Globe they had lots of problems with them. Of course many of the boats were doing over 30 knots from time to time.
__________________
The Blue Dot Campaign. This Changes Everything.
DeepFrz is offline   Reply With Quote
Old 24-09-2014, 20:25   #30
Registered User

Join Date: Sep 2012
Location: Wilbur By The Sea, FL
Boat: Catalina 30
Posts: 660
Re: The Missing Link of Power Generation

How bout take the rope ratchet dodad and float part of the rig off and run it to a sail type contraption that catches the wind and turns the doo hicky and creates power. You could mount those sails on a wheel so they are always revolving.....


Oh wait..


__________________

__________________
Gary
http://svknotaclew.wordpress.com/
The Garbone is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Moody 45 DS the missing link ? scarab Multihull Sailboats 50 04-07-2016 21:40
Next Generation Power diesel generators pete33458 Electrical: Batteries, Generators & Solar 6 06-01-2014 10:44
Next Generation Power Engineering Cirruscloud Electrical: Batteries, Generators & Solar 6 05-08-2013 13:41
Link 20 vs Link PRO Jim Young Electrical: Batteries, Generators & Solar 14 28-04-2010 09:02
Norwolf's 'Missing Link' Tool ? GordMay Construction, Maintenance & Refit 3 15-02-2008 13:38



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 05:00.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.