Abstract: A mechanically decoupled, fluid displacing Sterling engine includes first and second containers, first and second fluid conduits mounted to the containers, a pump mounted in cooperation with the second conduit for selectively pumping fluid between the containers, a processor controlling the pump, a third fluid conduit whose lower end extends into the lower end of the second container, a fluid motivated actuator mounted to the third conduit. The first and second containers contain an actuating volume of an actuating fluid and a working gas. Expanding of the gas actuates the actuator. The volume of the containers is pressurized by a geothermal temperature differential. The pump displaces the actuating fluid between the containers so as to correspondingly displace the gas for heating or cooling to provide the temperature differential to the gas.

Abstract: A thermopile, utilizing the Seebeck effect, is placed into a blackbody cavity or other ambient heat source, where the hot junctions are inside the heat source, and the cold junctions are outside the heat source, and thereby produces a voltage.

Abstract: A low temperature differential Stirling engine includes a sealed elongate hollow container having a corresponding elongate cavity therein containing a gaseous working fluid and a displacer slidably mounted in the cavity. The displacer is translatable along the cavity. The container has a hot end and an opposite cold end. Translation of the displacer along the cavity forces the working fluid into the hot or cold ends sequentially according to a Stirling cycle. The hot end of the container has a power piston conduit. The conduit is in fluid communication with a power piston cylinder containing a power piston slidably mounted therein. Thus the conduit is in fluid communication between the working fluid in the cavity in the hot end of the container and the power piston cylinder so that heated expansion of the working fluid in the hot end of the container produces a power stroke of the piston. The displacer is mechanically decoupled from said power piston.

Abstract: A thermopile, utilizing the Seebeck effect, is placed into a blackbody cavity or other ambient heat source, where the hot junctions are inside the heat source, and the cold junctions are outside the heat source, and thereby produces a voltage.

Abstract: An improved sieve bed design to manage breakthrough and the mass transfer zone by way of volumetric division. An empty space in the product end is separated from adsorbent-filled sieve space in the feed end by a mid-diffuser plate. The ratio of the empty product end void space to the adsorbent filled sieve space within a sieve bed may be determined by the relative percentages of the gasses to be separated and the bulk loading factor of the molecular sieve. In operation, pressure in the sieve bed empty space and sieve filled space may be equal at any instant. This contains breakthrough to the location of the mid-diffuser plate. The mass transfer zone may be static at the point of the mid-diffuser plate and as such, gas separation is a function of pressure within the bed.

Abstract: A component gas concentrator includes an air compressor, an air-tight first container containing a molecular sieve bed, the first container in fluid communication with the compressor through a first gas conduit, and an air-tight second container in fluid communication with the first container through a second gas conduit. A gas flow controller such as PLC controls actuation of valves mounted to the gas conduits.

Abstract: A component gas concentrator includes an air compressor/vacuum pump, an air-tight first container containing a molecular sieve bed, the first container in fluid communication with the compressor/vacuum pump through a first gas conduit, and an air-tight second container in fluid communication with the first container through a second gas conduit. A gas flow controller such as PLC controls actuation of valves mounted to the gas conduits.

Abstract: A component gas concentrator includes an air compressor/vacuum pump, an air-tight first container containing a molecular sieve bed, the first container in fluid communication with the compressor/vacuum pump through a first gas conduit, and an air-tight second container in fluid communication with the first container through a second gas conduit. A gas flow controller such as PLC controls actuation of valves mounted to the gas conduits.

Abstract: A component gas concentrator includes an air compressor, an air-tight first container containing a molecular sieve bed, the first container in fluid communication with the compressor through a first gas conduit, and an air-tight second container in fluid communication with the first container through a second gas conduit. A gas flow controller such as PLC controls actuation of valves mounted to the gas conduits.