Re: Engine claims to recover low-grade and waste heat
Thanks Mike in a that case they're onto something. We had a company in Brisbane with a pnumatic linear generator of similar design but they seem to have drifted from sound science to oblivion; the web sites gone. The fast way to kill a good engine is to claim you can tap ambient heat! They forgot to look up the laws of themodynamics again I guess. Mike Carrell wrote: From: "Wesley Bruce" <[EMAIL PROTECTED]> Subject: Re: Engine claims to recover low-grade and waste heat The bigger loss with this linear motor design is that part of the combustion energy is wasted slowing, stopping and reversing the direction of the piston. There is also the possibility that thermal or mechanical shock could demagnetize the magnet. If the coupling between the magnet and the surrounding coils is good, the magnet could be nearly stopped by the first coil, but pushed on by the gas. If the magnet approaches at high velocity, a high voltage is induced, and energy is absorbed, slowing the magnet -- but not stopping it because the induced voltage is reduced. finally the voltage will fall so low that the coupling circuits will not work. For maximum efficiency neodydmium iron magnets would be used which are very difficult to demagnetize. The device is suppoised ot use low temperature, waste heaqt gas. Mike Carrell
Re: Engine claims to recover low-grade and waste heat
From: "Wesley Bruce" <[EMAIL PROTECTED]> Subject: Re: Engine claims to recover low-grade and waste heat > > The bigger loss with this linear motor design is that part of the > combustion energy is wasted slowing, stopping and reversing the > direction of the piston. There is also the possibility that thermal or > mechanical shock could demagnetize the magnet. If the coupling between the magnet and the surrounding coils is good, the magnet could be nearly stopped by the first coil, but pushed on by the gas. If the magnet approaches at high velocity, a high voltage is induced, and energy is absorbed, slowing the magnet -- but not stopping it because the induced voltage is reduced. finally the voltage will fall so low that the coupling circuits will not work. For maximum efficiency neodydmium iron magnets would be used which are very difficult to demagnetize. The device is suppoised ot use low temperature, waste heaqt gas. Mike Carrell > > > >
Re: Engine claims to recover low-grade and waste heat
Mike Carrell wrote: An interesting idea. If you use expanding gases to drive a magentic piston through some coils you will generate electricity with potentially good efficiency. However the voltage and frequency will vary widely even from one end of a stroke to another as energy is absorbed from the piston. Most external systems expect standardized voltage and frequency. With modern electronics it is possible to provide this. The problem is similar to wind turbines. There is an optimum rotary speed for coupling to various wind velocities, producing different genrator shaft speeds. Mike Carrell The problem can be fixed with a rectifier and a few capacitors and induction loops but there are looses. A simple rectifier and a syncronous inverter can match a current to the existing grid current and phase. In wind power one option is to drive the electro magnet with grid power and synconise the switching so the field oscillated with the grid and the induced current winds up in phase and at a steady voltage. The bigger loss with this linear motor design is that part of the combustion energy is wasted slowing, stopping and reversing the direction of the piston. There is also the possibility that thermal or mechanical shock could demagnetize the magnet.
Re: Engine claims to recover low-grade and waste heat
An interesting idea. If you use expanding gases to drive a magentic piston through some coils you will generate electricity with potentially good efficiency. However the voltage and frequency will vary widely even from one end of a stroke to another as energy is absorbed from the piston. Most external systems expect standardized voltage and frequency. With modern electronics it is possible to provide this. The problem is similar to wind turbines. There is an optimum rotary speed for coupling to various wind velocities, producing different genrator shaft speeds. Mike Carrell
Re: Engine claims to recover low-grade and waste heat
FYI That company Encore Clean Energy Inc. (ticker ECLN) looks like a classic "pump-and-dump" stock. It's IPO appears to have been late in 1999 at around $90.00, and by early 2000 had climbed to over $235. Since then it has traded as low as 9 cents... and yesterday it closed at $ 0.38 Caveat emptor... Colin - Original Message - From: "Jones Beene" <[EMAIL PROTECTED]> To: Sent: Saturday, August 06, 2005 11:25 AM Subject: Re: Engine claims to recover low-grade and waste heat - Original Message - From: "Mark Goldes" This may be of interest. http://www.aiada.org/article.asp?id=45693 Wow Mark, A few weeks back I must have been taping into a technology "meme" which these guys created in neurospace, because this concept is exactly how I envisioned a heat-->electric converter for the low-grade heat output of the MAHG. Curiously, they did not mention the word "thermoacoustics". I wonder if that is part of the strategy to try to distance their IP claims from prior art, which is fairly well developed under that particular name. But can you distance this MPG technology from thermoacoustics, really? Even more "curiously" is this bit from their recent SEC filing- "We do not expect the Encore Business to achieve profitability in the near future and we expect to incur substantial operating losses for at least the next twelve months. If we are unable to develop a significant revenue stream or if expenses are larger than expected, the Encore Business may never become profitable." Now, even if it is boilerplate, that is a shocker coming from a company with such an obvious desire to see their name in print that they send out a glowing press release to a PR outfit. This technology bears a closer look, even if the company which licensed it is "on the brink". More later. Jones
Re: Engine claims to recover low-grade and waste heat
Jones, The statement regarding profitability is undoubtedly that of a savvy SEC aware lawyer. A statement of this nature appears in materials released by public companies of this nature as a matter of course. Mark From: "Jones Beene" <[EMAIL PROTECTED]> Reply-To: vortex-l@eskimo.com To: Subject: Re: Engine claims to recover low-grade and waste heat Date: Sat, 6 Aug 2005 08:25:13 -0700 - Original Message - From: "Mark Goldes" This may be of interest. http://www.aiada.org/article.asp?id=45693 Wow Mark, A few weeks back I must have been taping into a technology "meme" which these guys created in neurospace, because this concept is exactly how I envisioned a heat-->electric converter for the low-grade heat output of the MAHG. Curiously, they did not mention the word "thermoacoustics". I wonder if that is part of the strategy to try to distance their IP claims from prior art, which is fairly well developed under that particular name. But can you distance this MPG technology from thermoacoustics, really? Even more "curiously" is this bit from their recent SEC filing- "We do not expect the Encore Business to achieve profitability in the near future and we expect to incur substantial operating losses for at least the next twelve months. If we are unable to develop a significant revenue stream or if expenses are larger than expected, the Encore Business may never become profitable." Now, even if it is boilerplate, that is a shocker coming from a company with such an obvious desire to see their name in print that they send out a glowing press release to a PR outfit. This technology bears a closer look, even if the company which licensed it is "on the brink". More later. Jones
Re: Engine claims to recover low-grade and waste heat
Bio of the inventor: ROBERT D. HUNT - Theoretical Physicist / Inventor / Founder of Hunt Aviation After attending Mississippi State colleges, Robert Hunt began his career in 1969 as a New Nuclear designer for Newport News Shipbuilding, then a division of Tenneco Oil Company, where he designed nuclear reactor components for the U.S.S. Nimitz Aircraft Carrier. Mr. Hunt became a private inventor during the mid-1980s while involved in the field of aquaculture. He invented and patented a cryogenic liquid oxygenation system for the aquaculture industry. He has since dedicated his time to the development of his proprietary alternative, clean-energy generating technologies. Mr. Hunt holds numerous patents including a thermoelectric generator that generates electricity from the thermal energy within the air, a new high pressure Drum Jet Turbine that among other uses is capable of being mounted onto a high pressure natural gas well to generate substantial power from the kinetic energy via the earth's geo-pressure, without burning any of the natural gas. Mr. Hunt has also invented a modified Einstein Refrigeration Cycle and a revolutionary new design vertical axis wind turbine. Many of Mr. Hunt's patents are licensed to Encore Clean Energy, a public company trading under the ticker symbol Mr. Hunt is a member of the American Institute of Aeronautics and Astronautics (AIAA), a member of the National Business American Association, a member of the National Hydrogen Association, and he served as the first Mississippi Chairman of the Gulf of Mexico Program. http://www.fuellessflight.com/aboutus.htm [Aside] From just a "prestige" standpoint in a resume (and I am about as far from a "credentials-person" as one can get) yet it probably does more harm than good to say "After attending Mississippi State colleges" since the implication is that 1) He did not graduate 2) This is not "MSU" which is an accredited university, not a college 3) He did attentd several colleges in Mississippi before dropping-out - in a state long known as 50th out of 50 in public education 4) Yet he wants to be considered a "theoretical physcist" Hey No problem with that ! as the "proof is in the puddin' " as they say in Faulkner-land (Miss'ippi) However, Number 4) avbove is a LOT easier to appreciate if one simply stated- "self-taught" inventor rather than "attended Mississippi State colleges"
Re: Engine claims to recover low-grade and waste heat
- Original Message - From: "Mark Goldes" This may be of interest. http://www.aiada.org/article.asp?id=45693 Wow Mark, A few weeks back I must have been taping into a technology "meme" which these guys created in neurospace, because this concept is exactly how I envisioned a heat-->electric converter for the low-grade heat output of the MAHG. Curiously, they did not mention the word "thermoacoustics". I wonder if that is part of the strategy to try to distance their IP claims from prior art, which is fairly well developed under that particular name. But can you distance this MPG technology from thermoacoustics, really? Even more "curiously" is this bit from their recent SEC filing- "We do not expect the Encore Business to achieve profitability in the near future and we expect to incur substantial operating losses for at least the next twelve months. If we are unable to develop a significant revenue stream or if expenses are larger than expected, the Encore Business may never become profitable." Now, even if it is boilerplate, that is a shocker coming from a company with such an obvious desire to see their name in print that they send out a glowing press release to a PR outfit. This technology bears a closer look, even if the company which licensed it is "on the brink". More later. Jones
RE: Engine claims to recover low-grade and waste heat
Mark Goldes wrote: > > Vo, > > This may be of interest. > > http://www.aiada.org/article.asp?id=45693 > Enticing, but if the IAS Bladeless Turbine (working as claimed) is inside a sealed cooling jacket cooled by a water-antifreeze mix circulating through the radiator, the 180 F heat from the engine coolant loop and exhaust heat (through a heat exchanger) creates a high pressure vapor (Methanol, Ammonia,?) to rotate the turbine rotor driving an off-the-shelf generator. A small electrically powered "condensate return" pump returns the working fluid to the evaporator. I rather doubt that IAShttp://iaus.com/turbine.htm is overlooking this patently high market pull area. :-) Frederick > Mark >
Engine claims to recover low-grade and waste heat
Vo, This may be of interest. http://www.aiada.org/article.asp?id=45693 Mark
