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Directory:Johnson Electro Mechanical Systems
The Johnson Thermoelectric Energy Conversion System (JTEC) can achieve a solar conversion efficiency rate that tops 60 percent with a new solid-state heat engine. It uses temperature differences to create pressure gradients that are used to force ions through a membrane, instead of moving an axle or wheel.
The company, founded and headed by former NASA scientist, Lonnie Johnson, has also come up with an ambient energy conversion system as well as an electric heat pump.
The Johnson Ambient Heat Engine (JAHE) generates power from the daily ambient temperature fluctuations and uses a thermal mass as a stabilizing heat sink/source. The Johnson Ambient Environment Engine (JAEE) operates in a manner similar to a fuel cell, generating power from daily temperature, barometric pressure and humidity changes.
How it Works
Johnson Thermoelectric Energy Conversion System (JTEC)
Popular Mechnics reports:
- "One MEA stack is coupled to a high- temperature heat source (such as solar heat concentrated by mirrors), and the other to a low-temperature heat sink (ambient air). The low-temperature stack acts as the compressor stage while the high-temperature stack functions as the power stage. Once the cycle is started by the electrical jolt, the resulting pressure differential produces voltage across each of the MEA stacks. The higher voltage at the high-temperature stack forces the low-temperature stack to pump hydrogen from low pressure to high pressure, maintaining the pressure differential. Meanwhile hydrogen passing through the high-temperature stack generates power."
- "It still uses temperature differences to create pressure gradients. Only instead of using those pressure gradients to move an axle or wheel, he’s using them to force ions through a membrane. It’s a totally new way of generating electricity from heat."
- "The law says that temperature differences tend to even out – for instance, when a hot mug of coffee disperses its heat into the cool air of a room. As the heat levels of the mug and the room come into balance, there is a transfer of energy. Work can be extracted from that transfer. The most common way of doing this is with some form of heat engine…Johnson’s latest JTEC prototype, which looks like a desktop model for a next-generation moonshine still, features two fuel-cell-like stacks, or chambers, filled with hydrogen gas and connected by steel tubes with round pressure gauges. Where a steam engine uses the heat generated by burning coal to create steam pressure and move mechanical elements, the JTEC uses heat (from the sun, for instance) to expand hydrogen atoms in one stack. The expanding atoms, each made up of a proton and an electron, split apart, and the freed electrons travel through an external circuit as electric current, charging a battery or performing some other useful work. Meanwhile the positively charged protons, also known as ions, squeeze through a specially designed proton-exchange membrane (one of the JTEC elements borrowed from fuel cells) and combine with the electrons on the other side, reconstituting the hydrogen, which is compressed and pumped back into the hot stack. As long as heat is supplied, the cycle continues indefinitely."
- super soaker inventor - CNBC spot light on Lonnie Johnson inventor of the super soaker.
http://inventors.about.com/library/in... The Super Soaker ® was invented in 1988 under the original name of the "Power Drencher" and a whole new era of power water squirters began. Invented by Lonnie Johnson, an Aerospace Engineer from Los Angeles, California, the Power Drencher was the first water blaster to incorporate air pressure into its design. Three years later in 1991 when Johnson received his patent, the Power Drencher was renamed "Super Soaker" and a nation-wide advertising campaign was launched. (YouTube; January 25, 2007)
- No moving parts
- no friction
- fewer mechanical failures.
According to Johnson, this engine can operate on tiny scales, or generate megawatts of power.
- It could harvest waste heat from internal combustion engines and cumbustion turbines.
Company: Johnson ElectroMechanical Systems, Inc. (JEMS)
Quoting from http://www.johnsonems.com/company.html
Johnson ElectroMechanical Systems (JEMS) mission is to develop alternative energy generation technologies to meet tomorrow's energy needs. JEMS was created by Johnson Research and Development Company, Inc. (JR&D), and operates as a fully independent company. JR&D operates as an incubator company, leveraging its roots in high-tech development to foster the creation of new, stand-alone companies.
JR&D has successfully developed innovations in a wide range of technology disciplines and has successfully formed strategic alliances, attracted technical competence and managed intellectual property. It accomplishes this by creating a competitive advantage through technological innovation and a vision of future markets.
Inventor: Lonnie Johnson
Johnson, a nuclear engineer and former NASA employee, who holds more than 100 patents, up until now is most well-known for his inventor of the Super Soaker squirt gun.
His toy profits, in the millions of dollars (billions in sales), have funded his research in advanced battery technology, specifically thin-film lithium-ion conductive membranes. 
- Top 100: Solar > Thermal / Thermal Electric > Johnson Electro Mechanical Systems >
Super Soaker Inventor Doubles Solar Power Efficiency - Lonnie Johnson's latest JTEC prototype, which looks like a desktop model for a next-generation moonshine still, features two fuel-cell-like stacks filled with hydrogen gas and connected by steel tubes with round pressure gauges. The JTEC uses heat (from the sun, for instance) to expand hydrogen atoms in one stack.... (Inhabitat; Oct. 19, 2010)
- Solar Cells with 60% Efficiency? - Nuclear Engineer Lonnie Johnson, best known for his invention of the super soaker squirt gun, has recently designed a new type of solar energy technology that he says can achieve a conversion efficiency rate of more than 60 percent. Considering that the best solar energy systems today have an efficiency of 30-40 percent, Johnson´s method could cut the cost of solar energy nearly in half. (PhysOrg; January 09, 2008)
- Super Soaker Inventor Hopes to Double Solar Efficiency - The man who invented the Super Soaker water gun turns out to be a nuclear engineer who's developed a solid-state heat engine that converts the sun's heat to electricity at 60-percent efficiency—double the rate of the next most successful solar process. And his innovation, called the Johnson Thermoelectric Energy Conversion (JTEC) system, is getting funding from the National Science Foundation, so this is no toy. (Slashdot; January 8, 2008)
- Super Soaker Inventor Doubling Solar Efficiency? (EcoGeek; Jan. 8, 2008)
- Super Soaker Inventor Aims to Cut Solar Costs in Half - (Popular Mechanics; January 8, 2008)
- Google > Johnson ElectroMechanical Systems
See discussion page
Johnson ElectroMechanical Systems, Inc.
263 Decatur Street
Atlanta, GA 30312
tel: 404.584.2475; fax: 404.584.6772