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ATLANTA, GA, United States

Patent
Johnson Research and Development Co., Inc. | Date: 2010-09-09

An ambient-heat engine has a substantially thermally-conductive housing whose interior is divided into a high-pressure chamber and a low-pressure chamber by a substantially gas-impermeable barrier. An ionically-conductive, electrical-energy-generating mechanism forms at least a portion of the barrier. First hydrogen-storage medium is disposed within the high-pressure chamber and second hydrogen-storage medium is disposed within the low-pressure chamber. An electrical-energy storage device connected to the ionically-conductive, electrical-energy-generating mechanism is operable between a charge condition and a discharge condition. In a charge condition, hydrogen atoms within the high-pressure chamber are converted to hydrogen ions and conducted through the electrical-energy-generating mechanism to the low-pressure chamber causing electrical-energy to be generated to the electrical-energy storage device. When the electrical-energy storage device is in a discharge condition an electric current is passed through the electrical-energy-generating mechanism causing hydrogen in the low-pressure chamber to convert to hydrogen ions and conduct through the electrical-energy-generating mechanism to the high-pressure chamber.


Grant
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 150.00K | Year: 2011

Refrigeration and air conditioning in buildings, industry, and transportation account for approximately 10 quads of U.S. primary energy consumption. In addition, current mass marketed air conditioning and refrigeration cycles utilize environmentally harmful refrigerants that are strong green house gases. This subtopic seeks innovative approaches to achieve high efficiencies and net-zero direct GHG emissions in cooling applications.Johnson Research & Development Co., Inc. (JRD) proposes the development of the Electrochemical Heat Pump (EHP) as a novel advanced cooling system. The Electrochemical Heat Pump (EHP) is a transformational technology that: 1) is a high reliability, long life time solid state device, 2) operates on a modified Rankine cycle to provide higher COP than current solid state technologies, and 3) works on well known principles of heat pipes, fuel cell membranes, and binary fluid gas cycles. The Phase I effort will investigate the overall device analytically and perform preliminary materials testing, while in Phase II a prototype system will be constructed and tested.Commercial Applications and Other Benefits: The EHP will have a profound impact on thermal management for a wide range of applications. It is scaleable to provide thermal control of small electronic systems to large industrial HVAC systems. Additionally, the EHP is versatile and can operate in reverse as a power generation system utilizing any thermal source. Based on this versatility, multiple entry points exist along the commercialization path to enter the market place (with both small and intermediate scale devices along with tangential applications).


Grant
Agency: Department of Defense | Branch: Defense Advanced Research Projects Agency | Program: SBIR | Phase: Phase II | Award Amount: 749.97K | Year: 2011

A Metal Hydride Solid Oxide Battery has been explored to answer the need for high energy density power required for High Altitude Long Endurance (HALE) aircraft. Lithium Hydride is a fuel source that can be stably stored for long periods allowing for a high level of readiness. Further, Lithium Hydride has a high energy density. The electrochemical oxidation of Lithium Hydride is far more effective than Carnot limited heat engines. When utilized in an electrochemical cell, energy densities of 1800Wh/kg and specific energy of more than 1100Wh/liter are anticipated. This cell can operate at high altitudes in thin air where many other energy alternatives are limited.


Grant
Agency: Department of Defense | Branch: Air Force | Program: STTR | Phase: Phase II | Award Amount: 749.90K | Year: 2011

ABSTRACT: Providing electrical power for long duration hypersonic flight is a technology that is required to bring about this revolutionary mode of transport. Whether for weapons delivery or for space access, the long duration missions anticipated require a novel approach to the generation of electrical power during flight. Scramjets contain no rotating shafts from which typical generators or mechanical pumps can be run. The energy source that is available during hypersonic flight is heat. We propose the use of the tremendous abundance of waste heat that occurs during hypersonic flight to produce electric power using a solid state heat engine. The Engine, using the compression and expansion of gas through electrochemical cells (similar to fuel cells) yields a Carnot equivalent cycle to convert any heat source into viable electric power. Leveraging our subcontractor"s existing experience in hypersonic flight technologies and as a follow up to our successful Phase I effort where we identified available heat generated by a Scramjet in operation, we shall continue our efforts to mate the JTEC electrochemical heat engine to a Scramjet. During the Phase II Johnson Research will produce a working JTEC proof of concept power generating system to be coupled to the Scramjet in the combustion facility at Georgia Tech. A design for the desired 100kW system will be produced as well as data to support its integration to be built during a subsequent Phase III effort. BENEFIT: Implementation of the proposed heat engine technology will provide a method to produce additional electricity during flight to operate electronic systems and related equipment.


Patent
Johnson Research and Development Co., Inc. | Date: 2015-04-01

An energy harvesting circuit for use with a logic circuit includes an induction coil positioned near conductive elements of the logic circuit and configured to extract energy from the magnetic fields produced by transient currents associated with state changes within the logic circuit.

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