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JON SCHROEDER
Thermoelectric Generator
US5597976
Thermoelectric Generator and Magnetic Energy Storage
Unit...
A New Thermoelectric
Generator for Rural Electrification
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NasaAstroPhysDataSys
A Novel High Energy-Density Electric
Storage Device for Electric Weapons
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Final Report, 26 Feb. - 25 Aug. 1992 Trymer Co., Leander, TX.
Three different energy storage variants were developed and tested
during Phase 1. Each was based on the close-coupled, thermopile
storage principle. First, direct current was stored in a
thermopile ring, which was open-switched into a dummy load to
measure the energy release. In the second variant, alternating
magnetic energy was stored in a split ring. Energy storage was
caused by pumping alternating current in the thermopile circuit,
connected as an LC oscillator.
Both methods were found to store energy and each delivered pulse
power, resulting in a twentyto-one pulse-power advantage between
energy released from the store and energy available from
the power supply at the input. Power was drawn from these systems
in a millisecond, making use of a specially developed,
sequentially opening switch that takes full advantage of the
MOSFET's nanosecond hyper-operating speed, the intermediate
switching speed of a silicon controlled rectifier (SCR), and a
slower speed electro-mechanical switch. Further work with
modifications of these two storage methods led then to the
development of an inductor-to-inductor (L(sup 2)) electromagnetic
storage system. This new type storage device seems to out perform
the first two methods by roughly two orders of magnitude in
storage capacity. During flux pump experiments, we also found that
the L(sup 2) prototype system could be tuned to operate
efficiently at certain particular frequencies depending on the
value of capacitor chosen, placed across the two conductors, to
tune in steps between 50 Hz and 50 MHz, possibly operating
efficiently in the GHz range.
Automotive Thermoelectric
Generator Design Issues
Francis Stabler
Missile Defense Agency Technology
Applications Program -- Fall 1995
Generators Targeted for South American Markets
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Heading south of the border, the Trymer Company (Leander, TX) is
marketing a silent, compact power generator to remote areas of
developing countries such as the Caribbean and South America,
where utility hook-up is impractical. Using technology developed
for the BMDO SBIR program, this device ---- which costs $500 and
is the size and shape of a bundt cake pan----can produce enough
electricity to power a refrigerator and light a small home (5
kilowatts AC). The solid-state device taps heat produced by
propane, wood, coal, or even solar energy to make electricity.
And, unlike conventional gasoline generators, it can automatically
switch on and off as needed.
"We find that we can sell all the generators we've planned in the
Dominican Republic, alone," comments Jon Schroeder, Trymer's
president. But, in addition to the markets found in developing
countries, Mr. Schroeder notes that the device has other domestic
uses. "In the U.S., we see the motor-home and camper industry as a
large market. This industry begs for a generator that is quiet,
vibration-free, small, and self contained." He also cites
applications for the construction industry, where there is a need
for rugged, trouble-free, low-maintenance generators.
Trymer's patented product generates electric current via the
thermoelectric effect. It is similar in function to
superconducting magnetic energy storage (SMES) systems, but it
does not require liquid helium cryocooling. Instead, it operates
on the same principle as the thermopile----a century-old method
for measuring minute changes in temperature or generating
thermoelectric current