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Talk:Directory: Kender Solar Inc

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Discussion page for Directory: Kender Solar Inc

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Latest: Directory:Solar Innovations >Directory: Kender Solar Inc - Kender Solar Inc. has developed a brand new solar technology, able of producing 20 times more energy than a traditional solar panel. This performance is achieved by having the energy of the sun create a spinning motion of helium gas in a closed circuit. (PESWiki March 5, 2009)


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NEC Dialogue

Is this a joke?

On March 07, 2009 9:36 PM Mountain, New Energy Congress member, Congress:Member:Francis Giroux wrote:

Is this a joke or a test of the insanity of NEC? This nonsense has fraud written all over it. It says that the energy all comes from the surrounding air temperature. Gee it would be more valuable a free air conditioning than it would as an energy source. You can’t get free air conditioning, and create energy out of the heat you removed with the air conditioning. You’d have more chance of producing free energy by claiming a big ball will roll itself up a hill and thereby creating electricity.

This “device” claims to be similar to a Stirling engine. Wrong. A Stirling engine has a heat sink and a cold sink. This “device” has only a heat sink. Sorry but the ball won’t roll itself up the hill and create electricity doing it.

If I missed something here, somebody please show me what it is.

The Science of How this Works

On March 07, 2009 10:24 PM Mountain, New Energy Congress member, Congress:Member:Nicholas Tastad wrote:

Maybe my science isn't what it once was, not that it was ever really that great, but what I see here is the main turbine acting as an its own expansion valve. Once past the turbine, the gas looses pressure and as a result its temperature. At this stage, the gas is recompressed by the compressor waiting for it just after the turbine. Once past the compressor and under pressure, or at least confined to a limited volume, the gas is further pressurized by the solar thermal heating element. The beauty of: PV=nR"T" then comes into play.

The engineering has to be tight, but I think that it's probable they have what they claim to have. Due to the fact that they really only need a heat source which mimics the sun's radiation, who would carry such a charade on beyond the patent office knowing how easy it would be to prove or disprove its efficacy?

Similar proposal by David Matos de Matos

On March 08, 2009 12:09 AM Mountain, New Energy Congress member, Congress:Member:Sepp Hasslberger wrote:

I agree with Nick here. Some time ago I came across a similar proposal by David Matos de Matos which I posted on my blog at

The Kender machine seems to be similar to Matos' arrangement, but with a more efficient working liquid. I wouldn't be so fast in saying that it can't work.

Pressurized Vapor Driven Rotary Engine

On March 08, 2009 12:09 AM Mountain, New Energy Congress member, Congress:Member:Gary Vesperman wrote:

A long time ago I wrote this description of a "Pressurized Vapor Driven Rotary Engine". A primary market was to be the junction where the pressure drops from high-pressure natural gas pipelines to lower-pressure pipelines. I have seen a prototype about 5 feet in diameter and 40 feet long. Most impressive-looking machine.

Typical reciprocating internal combustion engines are relatively inefficient primarily due to the translation of linear piston motion to rotary motion. The most widely utilized rotary engine, the "Wankel engine", offers some improvements. However, the Wankel engine does not completely eliminate pollution because it still requires compression of the air/fuel mixture before ignition. Still more disadvantageous, the seals in the Wankel engine remain subject to extreme wear and tear.

The Pressurized Vapor driven rotary engine (PV) avoids the problems and disadvantages of reciprocating engines and previously invented variations of rotary engines. Vibrations from non-rotary motions of parts, especially the linear motion of reciprocating pistons and valves, are eliminated. A flywheel is eliminated due to the large inertia provided by the rotary motion of the PV engine’s internal parts. The PV engine generates torque which is not solely dependent on the engine’s revolutions per minute since forces imposed on a given piston side during the expansion cycle of the engine are translated directly into torque as a function of the cylinder inlet pressure. Additionally, the PV engine greatly increases available torque due to its long moment arm at the time of expansion. In contrast, reciprocating engines generate relatively low torque because the air/fuel mixture is exploded when the pistons are near their shortest, least advantageous moment arm position. Because of less stress on their parts, a higher percentage of PV engines can be made from cheaper, lower-grade materials such as aluminum and mild steel than reciprocating engines.

(Due to its complexity, a concise description of the PV engine’s operation is not currently available.)

Possibly these two devices could be combined to increase overall efficiency?

See also

Directory: Kender Solar Inc


Directory:Solar - index of resources

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PowerPedia:Solar Energy - Encyclopedic review of history and future

Directory:Solar Energy Research and Development


Directory:Solar Problems


Directory:Concentrated Solar Power

Directory:Solar Infrared Harvesting

Directory:Solar PhotoVoltaics

Directory:Home Generation:Solar PV

Directory:Photovoltaic Research and Development

Directory:Solar Thermal

Directory:Home Generation:Solar Heating

Directory:Thin Film Solar

Directory:Solar:Photosynthesis Imitation

Directory:Solar Paint

Directory:Dye Solar Cells

Directory:Solar Tower

Directory:Floating Solar Chimney

Directory:Space Based Solar Power

Directory:Solar Sails

Directory:Solar Windows


Directory:Plastic Solar Cells

Directory:Silicon - more efficient uses, alternatives, methods

Directory:Black Silicon

Directory:Synchronous Solar Heliostat

Directory:Solar:Installation and Consultation



Directory:Solar Applications



Directory:Solar Hydrogen

Directory:Walipini Underground Greenhouses

OS:Solar Ethanol - distiller design

Directory:Energy from Roadways

Directory:Solar Pavement - black-body absorption of the asphalt

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