Abstract:
A heat exchanger for a Stirling cycle machine comprising: an inlet for receiving working fluid; an impingement baffle (215) having a plurality of apertures (265) thereon; and a manifold (235) formed in the space between the interior wall (240) of the Stirling cycle machine and the impingement baffle (215); wherein the working fluid impinges upon the interior wall of the Stirling cycle machine when the working fluid is flowing in a first direction and the working fluid is directed into a chamber of the Stirling cycle machine when the working fluid is flowing in a second direction.
Abstract:
A control system for a free piston Stirling engine, the free piston Stirling engine having a power piston, the control system comprising: a) an electromagnetic transducer in mechanical communication with the power piston; and b) a controllable oscillatory power system in electrical communication with the electromagnetic transducer, the system being capable of delivering power to or receiving power from the electromagnetic transducer while enforcing a prescribed amplitude and prescribed frequency of the voltage at the terminais of the electromagnetic transducer.
Abstract:
A liquid aerosol generating formulation comprising medicament and at least one liquid perfluorocarbon and/or hydrofluorocarbon. The formulation can include at least one surfactant which stabilizes the medicament. An aerosol of medicament particles can be formed by heating the formulation in a flow passage such that the liquid perfluorocarbon and/or hydrofluorocarbon is vaporized and expands out of an outlet of the flow passage. The flow passage can be a heated capillary sized flow passage in a hand held inhaler. The liquid perfluorocarbon and/or hydrofluorocarbon can deliver drugs having low solubility and/or low potency to a patient as a soft mist aerosol requiring minimal patient coordination.
Abstract:
A hybrid system for generating electrical power. The hybrid system includes a photovoltaic array for collecting and converting solar radiation into electrical power, an apparatus for producing power from a source of liquid fuel, the apparatus including at least one capillary flow passage, the at least one capillary flow passage having an inlet end and an outlet end, the inlet end in fluid communication with the source of liquid fuel, a heat source arranged along the at least one capillary flow passage, the heat source operable to heat the liquid fuel in the at least one capillary flow passage to a level sufficient to change at least a portion thereof from a liquid state to a vapor state and deliver a stream of substantially vaporized fuel from the outlet end of the at least one capillary flow passage, a combustion chamber in communication with the outlet end of the at least one capillary flow passage and a conversion device operable to convert heat released by combustion in the combustion chamber into electrical power, and a storage device electrically connected to the photovoltaic array and the conversion device for storing the electrical power produced by the photovoltaic array and the conversion device.
Abstract:
A fluid vaporizing device (100) such as an aerosol generator having a tubular heater in the form of thin film of resistance heating material lining a fluid passage (130) and method for forming the tubular heater within the fluid passage (130). The tubular heater can be heated to volatilize a fluid within the passage. The fluid vaporizing device (100) can be used for the generation of aerosols containing medicated material.
Abstract:
An innovative combination of powder metallurgy and hot working steps have allowed for optimization of the processing route for extruded powder metallurgical iron aluminide that is produced from both water atomization and gas atomized powders. Utilizing strain and strain rates sufficient to achieve dynamic recrystallization or superplastic deformation of the intermetallic alloy under hot working conditions, manufacturing methods have been developed which take advantage of the inherent properties of these two regimes to optimize the processing of iron aluminide alloys.
Abstract:
A programmable vapor generator forms a volatilized liquid by supplying a material in liquid form to a flow passage and heating the flow passage, such that the material volatilizes and expands out of an outlet of the channel. The volatilized material, if desired, mixes with ambient air such that volatilized material condenses to form the aerosol. An apparatus and method for generating such a volatilized liquid, as well as the control and methods of heating, are disclosed as an analytical tool useful for experimental use, a tool useful for production of commercial products or an inhaler device.
Abstract:
Liquid nanoscale particle precursor materials for generating nanoscale particles include at least one high volatility carrier and a second component. A nanoscale particle generating device generates nanoscale particles by passing a liquid nanoscale particle precursor material through a flow passage heated to convert the carrier into a vapor and the second component into nanoscale particles. The nanoscale particles preferably consist essentially of the second component and can consist essentially of dry, solid particles. The particle generator can be incorporated in a hand be produced by flowing a solution of medicament, control release agent and carrier liquid through a capillary heater.
Abstract:
A liquid aerosol formulation comprising at least one thermally stable active ingredient selected from the group consisting of buspirone, buprenorphine, triazolam, cyclobenzaprine, zolpidem, pharmaceutically acceptable salts and esters thereof and derivatives thereof. The liquid formulation can include an organic solvent such as propylene glycol and one or more optional excipients. The active ingredient can be present in an amount of 0.01 to 5 wt. % and the formulation can be heated to provide a vapor which forms an aerosol having a mass median acrodynamic diameter of less than 3 um.
Abstract:
An aerosol generating device generates an aerosol having a desired particle size by passing a liquid through a flow passage heated to convert the liquid into a vapor. The flow passage includes an outlet section that controls the exit velocity of the vapor and produces an aerosol with a desired particle size. The aerosol generator can be incorporated in a hand held inhaler, and the liquid can include a medicament, which is delivered to a targeted portion of the lung using the inhaler.