HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
Jack Rupert, PE
User Rank
Platinum
Re: 9 meters not quite enough?
Jack Rupert, PE   6/24/2012 2:21:06 PM
NO RATINGS
Interesting thought.  I was wonder what type of sensor and systems are we talking about?  My first thought was this was going to be part of a large array of sensors which only recorded a few KB of data.  If thats' the case, they would be somewhat disposable so if i ship or curious fish took some out there wouldn't be an issue.

bobjengr
User Rank
Platinum
UNDERWATER SOLAR
bobjengr   6/15/2012 4:45:28 PM
NO RATINGS

Elizabeth—great story.   I have my reservations about the degree of ultimate success for this technology but then again stranger things have happened.  I think tomw is on to something when he mentions the debris that can accumulate on a flat plate collector.  I will say this; the amount of energy for the depth involved is impressive.  I wonder if the degree of salinity has a great effect on the transference of light to the collector.    Robatnorcross mentioned subs an ocean-going ships interfering with the installations.  How about curious fish (big fish) and migrating schools of "whatever".  At any rate, certainly an interesting topic to follow.  Thank you for the information.

solardude
User Rank
Iron
Re: 9 meters not quite enough?
solardude   6/14/2012 11:02:14 PM
NO RATINGS
I agree with your thoughts about total watt producting being blocked under water like that.


Ryan @ Portable Solar Power Generator

 

 

robatnorcross
User Rank
Gold
Re: 9 meters not quite enough?
robatnorcross   6/13/2012 7:01:42 PM
NO RATINGS
large ships EASILY have a draft of 29 feet. What about subs? This gives them something to bump into or grind up with the props. Seems to me that the thing will have to be anchored to the bottom anyway (like a mine) so why not just use the ocean movement (spelled waves)?

I'm REALLY skeptical about the amount of energy (Watts) you can get from the things as in the already mentioned seaweed, etc. not to mention barnacles that seem to like ship hulls.

Ann R. Thryft
User Rank
Blogger
Re: Solves a big logistic challenge
Ann R. Thryft   6/13/2012 12:40:35 PM
NO RATINGS
Thanks for reporting this. There are several different materials that can be used for PV solar, as well as for non-PV solar technologies. The predominance of silicon for PV solar, most particularly crystalline silicon, happened mostly because it was a cheaper, ubiquitous material and because the entire sourcing and manufacturing process could be easily integrated into the existing manufacturing infrastructure using existing processes, knowledge and equipment. Solar cells based on gallium arsenide (GaAs), such as triple junction GaAs, and other forms of gallium like GaInP are highly efficient, but the material cost is very expensive.

tomw
User Rank
Iron
Problems keeping the collector clean
tomw   6/13/2012 11:01:46 AM
NO RATINGS
I'm sure that using the correct materials that an efficient solar cell can be made. The devil is in the packaging.  I have never seen a shallow underwater surface that was not covered with silt, algae or some manner of marine growth.

TJ McDermott
User Rank
Blogger
9 meters not quite enough?
TJ McDermott   6/12/2012 11:57:58 PM
NO RATINGS
Is 9 meters deep enough?  One would think that depth still puts the solar collector in danger of being hit by surface vessels.

7 watts though, is impressive at that depth.  It gets the sensor powered.

I wonder how much power is needed to get the data collected by the sensor back to a place that can use it.

Charles Murray
User Rank
Blogger
Re: Solves a big logistic challenge
Charles Murray   6/12/2012 7:24:03 PM
NO RATINGS
Great story. It's been said that in some (northern) geographical areas of the U.S. solar cells produce usable energy about 15-20% of the time. I wonder how much of the time an underwater solar cell can produce usable current.

naperlou
User Rank
Blogger
Solves a big logistic challenge
naperlou   6/12/2012 8:43:49 AM
NO RATINGS
Elizabeth, this can go a long way toward solving a logistic challenge for naval sensors.  I assume that some of them might be associated with ASW technology.  These have to be around for a long time.  An autonomous power source like this will decrease cost to service and enhance security, since they do not have to have their batteries replaced by ships that can be tracked.  The decision to use a different material for the solar cells is also interesting.  All too often we use materials, like silicon, that are familiar and easy to work with.



Partner Zone
Latest Analysis
Last year you helped Design News and Allied Electronics crown its first-ever Gadget Freak of the Year, and we need your help again. Vote in round 2 of our second-annual contest.
The key to autonomous driving is not to forget about the driver, and to remember that passengers want a sense of control, as opposed to being utterly passive backseat drivers.
HP revealed more of its 3D printing plans in a recent webinar. Senior vice president of inkjet and graphics solution business Stephen Nigro spoke about how the technology works and expanded on HP's vision of open collaboration to commercialize its Multi Jet Fusion 3D printing technology for end-production, and open collaboration on new materials. He also said HP will create software to help users decide when to use Multi Jet Fusion versus conventional subtractive manufacturing.
Get a load of these strange product designs. What's in the water these design engineers are drinking?
The Dutch are known for their love of bicycling, and they’ve also long been early adopters of green-energy and smart-city technologies. So it seems fitting that a town in which painter Vincent van Gogh once lived has given him a very Dutch-like tribute -- a bike path lit by a special smart paint in the style of the artist's “Starry Night” painting.
More:Blogs|News
Design News Webinar Series
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
11/6/2014 11:00 a.m. California / 2:00 p.m. New York
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Dec 1 - 5, An Introduction to Embedded Software Architecture and Design
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Littelfuse
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service