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Topic Title: Science Magazine "dishes" out all the details of the Kelly Slater wave machine thingy, , , ,
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Created On: 11/10/2017 06:39 AM
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 11/13/2017 12:35 PM
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waterlizard25

Posts: 163
Joined: 07/18/2012

Good one mate!

Hows this..

Id rather have my left hand then big jerome in Sharpes sliding his DOOBS and BOOBS in your TUBES..



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 11/13/2017 01:23 PM
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WG

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Originally posted by: tom

WG - I was wondering the same thing.  Not my field so I'm kinda lost in getting a realistic comparison.


This was easy to find:  A wave with a height of 2 m and a wavelength of 14 m breaking along 2 km of coastline (surface area = 32,000 m2) has approximately 45 kWh of energy. This is roughly equivalent to one gallon of gasoline, which contains about 160 million (1.6 x 108) joules (J) of energy.


https://manoa.hawaii.edu/exploringourfluidearth/physical/waves/wave-energy-and-wave-changes-depth 

Then figure that a car only gets 15-20% of the energy out of gasoline in work so maybe 5:1?

Still doesn't seem to be a huge expenditure of kWh.  

 


Doesn't really seem intuitively correct to me either. Did you see the size of that locomotive thing pushing it?

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 11/13/2017 01:53 PM
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ww

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If REAL was an April Fool joke (they really don't have the space and there's problems putting much of anything in that location), it was a pretty good one.  They are the sort of training/resort business that could make good use of a real wave pool.  

Florida water parks now include the massive new Volcano Bay and Sea World's Aquatica.  Murphys Waves based in Glasgow, Scotland seems to be doing just fine with theme park-type wave pools and other water attractions. 

For a Slater wave, I expect the main issue is a business model that will pay off the construction costs and the need for safety training for users.  Not to mention that prime users will mostly be rather skilled surfers who know how to find good natural waves.  I don't see it as a way to turn duffers into scratch.   

It might be easier to build a customer base for an artificial whitewater park/training center like the ones in Charlotte N.C. or Auckland.  Then again, if you could produce a whole variety of waves at a fast rate . . . 

Charlotte and Auckland are both situations where there's a big urban population close to good whitewater.  Auckland's close to really good surfing.  It's the only big city in a small country, not quite as many people as Jacksonville's urban area.   

 

 11/13/2017 02:46 PM
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vtecmonster

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Originally posted by: ww 

 

For a Slater wave, I expect the main issue is a business model that will pay off the construction costs and the need for safety training for users.  Not to mention that prime users will mostly be rather skilled surfers who know how to find good natural waves.  I don't see it as a way to turn duffers into scratch.

 

I work like crazy and I'm a father of 2 young ones. I'm a skilled surfer, but leaving the country w/out my family for anything longer then a few days isn't an option. You can't take a worthwhile surf trip for 3 days. Slater's wavepool is the perfect fit for me. I know at least 10 guys in the exact same situation that are foaming at the mouth to go surf that pool. It's easy to travel to and low risk of poor conditions. I can't wait. 

I'm always blown away that typhoon lagoon is always so booked up and they don't even advertise. In fact most casual surfers that I know through work that live in Florida don't even know about surfing the wave pool and are always asking to be a part of my next group. Yet Typhoon Lagoon is always booked out weeks in advance. 

 11/13/2017 02:59 PM
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chopola

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I don't know how much he would have to charge to turn a profit, but I would be willing to put down $150 for 2 waves. Add that to the tab at restaurant after the session, and I think it could work. and why do the naysayers, [catpiss], think the permitting is gonna be a problem?
 11/13/2017 03:58 PM
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dingpatch

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From previous reading, and some "latest" info from down there, , , , the place where the park will be is an "industrial park" area that never developed into anything that was originally imagined. The area, I "believe", is a publicly owned concern and as such, the local government is 110% behind the plans for the park.
 11/13/2017 08:36 PM
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ww

Posts: 14149
Joined: 08/17/2007

Without doing a bunch of checking, my recollection is that the proposed site is a very long lot along the north boundary of Palm Beach Park of Commerce on the Bee Line Highway at Pratt Whitney Road.  It would have as neighbors Willy Roberts Classic Boats, Heritage Propane, Element Materials Technology, and a bit more distant, a Walgreens distribution center,  JENOPTIK, FPL, Palm Beach International Raceway, and Pratt & Whitney.  It's near Jones/Hungryland and J.W. Corbett WMA.  

The folks in Martin and Indian River Counties are offended by trains, but that's not going to bring out crazies in Palm Beach County.

 11/13/2017 11:17 PM
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MyCatSprays

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"My recollection", & "local gov't". Glad y'all know South Florida, but wait till the Ziff Bros. & KSWaveCo get a load of the good ol' State of Florida and it's regulatory requirements!! Let em find one Gopher Tortoise! It might happen guys, but it'll definitely not be open by 2019, and you, I, nor any of us will be able to surf it, plus, Im still sticking by it'll never happen in a coastal county!! KS Volcano Baywatch!!! Disney is frothing!!!



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 11/13/2017 11:32 PM
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MyCatSprays

Posts: 310
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And hey there PissIguana69, you sure do seem to talk alot about my butt, my blue eyes, prison rape and gay sex!! Seems like you are the one with issues bro, cause I've done 6 months in Sharpes twice, and ran my cell block, The Work Farm, the commisary, and anyone I dealt with, like a fine tuned fiddle and only had to fight once and was NEVER tried for my manhood!! And y'all WEB FAGS always resort to Sharpes/Mugshots when I shut you the fuck down, and honestly, me, the consensus, CFLDave, and many others are just bored with it and you just look more lame, waning, and wanting than your lil life probably is!! Get more game or STFU SphincterGizzard000!!!



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 11/14/2017 02:23 AM
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ww

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I mention a place in Auckland and it somehow shows up at The Inertia.  Brief video.  I suppose you can practice doing that drop in a raft before signing up to do a similar one on a river near Rotorua.  

 11/14/2017 03:18 AM
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MyCatSprays

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ww, you can believe with full certainty that The Inertia, STAB, and BeachGrit all troll this site on the regs!! They'll plagerise you while you sleep!!! Go figure!! I'd never heard of it and I checked it out after your post!!!



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 11/14/2017 07:38 AM
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tom

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WG - agree, it seems improbably small but as I said, I'm out of field here.

I remember that harvesting wave energy as electricity was sexy but really not very useful.  Low yield, lots of problems.

Probably best to use waves for their intended purpose. 

 

 

 11/14/2017 04:33 PM
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ww

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Joined: 08/17/2007

UK might actually go ahead with a tidal power plant in Wales, but right now offshore wind power's looking like the bigger deal. 

 11/14/2017 06:10 PM
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RegularJoe

Posts: 3095
Joined: 11/20/2011

Originally posted by: tom

WG - I was wondering the same thing.  Not my field so I'm kinda lost in getting a realistic comparison.

This was easy to find:  A wave with a height of 2 m and a wavelength of 14 m breaking along 2 km of coastline (surface area = 32,000 m2) has approximately 45 kWh of energy. This is roughly equivalent to one gallon of gasoline, which contains about 160 million (1.6 x 108) joules (J) of energy.

https://manoa.hawaii.edu/exploringourfluidearth/physical/waves/wave-energy-and-wave-changes-depth 

Then figure that a car only gets 15-20% of the energy out of gasoline in work so maybe 5:1?

Still doesn't seem to be a huge expenditure of kWh.  
 


Just SWAGging it through a slightly different lens:

Suppose you have a 350 hp Chevy Suburban that would get 1 mpg under a heavy load.

For 1-mile pull, you burn one gallon.

If it takes the equivalent of 10 Suburbans to pull the sled 1 mile, it's 10 gallons.

At 750 watts/horsepower, ten 350hp engines = 262500 watts, or 0.2625 MJ/s.

If it takes 240 seconds to pull that mile (avg 15 mph), you're at 63 MJ delivered (about 4% of the energy available in 10 gallons of gas -- assumes super-low efficiency).

Assuming greater efficiency (mpg) and a sled track about half that distance, a few gallons of gas per ride might be the right order of magnitude.


If they're doing 30 pulls per hour at 2 gallons per pull for a 16-hour day, that's about 960 gallons/day, or maybe $2K/day in wholesale fuel cost.

So while it doesn't seem like an insane amount per wave, the per-day hydrocarbon burn sounds high.

Again, the numbers are total swags. You'd need to know the real velocity profile, true track length, and drag coefficient of their foil to nail down real numbers.

Solar could be an attractive option to augment the system. Even cooler if they could capture some of the wave energy after it's all done sloshing.
 11/15/2017 10:47 PM
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MyCatSprays

Posts: 310
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My bro from Lake Worth,(a gnar Pro surfer), just drove by the site in the industrial park in west Palm Beach and said; No survey stakes! No heavy equipment! Not a shovel of dirt nor a stone turned over!! Not even a fence!! Even if it happens, it wont open in 2019, and again; wait until they get a load of the State of Floruda!



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