Posted on 09/29/2004 10:15:12 AM PDT by ckilmer
Canadian Group Produces Hydrogen from Water Using Solar Energy Publication Date:14-Sept-04 Source:Sterling D. Allan of PES Network Inc. TEMPE, AZ (PRWEB) September 14, 2004 -- Solar Hydrogen Energy Corporation (SHEC) of Saskatoon, SK, Canada demonstrated a technology Monday in Tempe Arizona that can split hydrogen from water using solar energy input. The keys to the process are in a patent pending catalyst that facilitates the liberation of hydrogen from water in the presence of heat, and the patent pending solar collector collector that can hold the heat during brief intermittent sun situations often encountered by solar arrays.
Three engineers were on hand at the demonstration that took place at Arizona Public Service (APS)’s Tempe solar facility (STAR) to corroborate the production of hydrogen using a gas chromatography machine procured by SHEC labs two days prior for ongoing testing.
In addition to the engineers, also in attendance at the demonstration was an international contingent of investors, solar club representatives, and marketing agents from the U.S. and Europe.
The solar collector will be located for the next few months at APS’ solar testing facility where data may be collected over an extended period of time. The Arizona power station grounds are dotted with many arrays representing 20 or 30 different solar designs, producing together about a megawatt of power which is integrated into Arizona’s grid system.
Richard Stegeman, SHEC lab’s manager in charge of technical operations in Arizona, is a former NASA solar engineer, and was present at the demonstration. He will be supervising the data collection at APS.
To him, what is remarkable about this system is that it only needs around half the amount of heat usually required to produce thermal cracking of water. “It is not that hard to get that temperature. Now we don’t have to use exotic metals, but can use stainless steel and other easily worked metals.”
The ideal temperature for the SHEC reaction is 850 degrees Celsius, which is what the present array is designed to deliver. However, the catalyst will separate hydrogen at temperatures as low as 400 degrees Celsius.
Another facet of this design that impresses Stegeman is the receiver design. A typical problem in solar designs similar to this one is that the receiver re-radiates much of the heat away. The patent pending design that SHEC labs has produced reduces such emissions by an estimated 30 to 40 percent, thus increasing the net absorption.
The present design prevents the receiving head from overheating by incrementally closing a camera-like shutter in front of the receiver. In future designs, that will be regulated by increasing or decreasing the flow of water and gasses to the reactor, increasing or decreasing the rate of hydrogen production.
Another advantage of the design is that the receiver forms a large thermal mass to maintain the heat during brief fluctuations in sun exposure – similar to a flywheel keeping the system going.
SHEC labs was incorporated Dec. 15, 1996 by Tom Beck, who conceived the design. Maurice Tuchelt has been responsible for implementing much of the design. Dr. Lang is responsible for perfecting the catalyst and other chemical processes.
The hydrogen separation occurs in two steps. First, the hydrogen is split off from the steam through a catalytic bed reactor. Second, the hydrogen and oxygen are prevented from rejoining the liquid via their “water-gas-shift reactor,” which sequesters the oxygen in an oxide compound.
The prototype being demonstrated Monday is the third to be produced by SHEC labs – the fruit of nearly eight years of research and development.
After several rounds of gas collection and testing by the engineer team on hand, Ray Fehr, VP of Marketing for SHEC labs announced, “We did it. We have produced hydrogen today. The gas chromatography results show a sharp spike for hydrogen.”
Mark Danneberg of MD Marketing in Spain has been raising funds for SHEC labs for the past ten months to the tune of $4.5 million Canadian. Much of that has come from the Saskatoon community where SHEC labs is located. Danneberg said that the arrival of this technology in the marketplace is dependant on how much more money they can raise. “It could be less than a year, if we get enough money,” he said.
APS has expressed an interest in utilizing the SHEC labs system in its grid power production once the technology is adequately proven over time. Meanwhile, they are assisting SHEC labs by providing the real estate and the utilities and power needed for testing.
Relevant Websites:
SHEC-Labs official website http://www.shec-labs.com
Arizona Power Supplier official website http://www.aps.com/home
Couldn't this be done with a solar panel powering a cathode/anode?
OK, this stuff is officially cool. I've always thought that the promise of a hydrogen fuel infrastructure relies on the ability to use pollution-free, renewable sources of energy to create the hydrogen. So this is exactly the kind of development I've been hoping to see.
This is probably more efficient. Photovoltaics are pretty inefficient as it is.
Am I correct in assuming that the value in this method is the speed at which hydrogen is produced?
Mix 'em together (with a match, and you get:
Water! (plus a neat little POP!)
The danger of dealing with dihydrogenmonoxide is just to great. the substance should be banned.
What about during the daily sun situations called night?
This describes how the process is done.
http://www.shec-labs.com/process.htm
I don't understand the processes well enough to know how it could be done better.
Perhaps you do. If so. Have at it.
An easier way would be to use photovoltaics to create the hydrogen at room temperature. Separating the hydrogen is a snap.
Plus, you get pure O2 as an added benefit.
Second, the hydrogen and oxygen are prevented from rejoining the liquid via their “water-gas-shift reactor,” which sequesters the oxygen in an oxide compound.
I didn't see details on this, but this seems to presume that you have a "un-oxidized" substance (reduced? elemental?) which the oxygen combines with. How do you get that substance and how much energy does it take to produce/purify it? Take, for example, iron. Almost all easily obtainable iron is iron oxide and it takes energy to strip the oxygen from the iron. If this elemental iron is then oxidized as to separate the hydrogen from oxygen are you really positive on the total energy side?
This process is further along.
I've seen photovoltics groups working in Virginia and Australia and England. There about 7 years away from commercialization according to PR's I've read.
I havn't seen any dollar amounts put on these. Which likely means they're still more expensive than current energy sources.
You could believe that if they could produce energy for below current available sources--the news would be trumpeted pretty loudly.
The holy graile is efficiency.
There are lots of critics of hydrogen, but the fact is that most of the toys we love could run on hydrogen with a few years of technological development. And of course the United States would benefit from any demand for high tech engineering.
You are not the first to point out the danger of dhmo.
http://www.snopes.com/toxins/dhmo.htm
I remember how the O2 tech introduced the 'new guys' to the O2 generator aboard the submarine.
He would point them to the H2 internal bleed line (from the sampling system) and strike his lighter! Of course, the bulk of the H2 was discharged overboard.
I've been thinking about trying to build a solar-powered barbeque to work the same way as their array...
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