Abstract: Embodiments of engine systems for improved engine cooling and work production are disclosed herein. A working fluid can be injected into a combustion chamber or an engine during any portion of an energy cycle to cool the engine and/or to produce useful work in addition to work generated by combustion events in the chamber. The system can include a monitoring system configured to measure conditions within individual combustion chambers. Based on the interior conditions of the chamber, the system can adaptively inject working fluid mixtures into the engine. The engine can be part of a cascading series of engines including a primary engine and a secondary engine that receives fluids from the primary engine and generates energy from the fluids.

Abstract: Reactors for conducting thermochemical processes with solar heat input, and associated systems and methods. A representative system includes a reactor having a reaction zone, a reactant source coupled in fluid in communication with the reactant zone, and a solar concentrator having at least one concentrator surface positionable to direct solar energy to a focal area. The system can further include an actuator coupled to the solar concentrator to move the solar concentrator relative to the sun, and a controller operatively coupled to the actuator. The controller can be programmed with instructions that direct the actuator to position the solar concentrator to focus the solar energy on the reaction zone when the solar energy is above a threshold level, and point to a location in the sky having relatively little radiant energy to cool an object when the solar energy is below the threshold level.

Abstract: Fuel cells for selectively reacting a feedstock material with or without generating electricity, and associated systems and methods are disclosed. A fuel cell system in accordance with a particular embodiment includes a first electrode positioned in a first region, a second electrode positioned in a second region, an electrolyte between the first and second regions, and an electrical circuit connected between the first and second electrodes. The system can further include a material collector in the first region to collect a non-gaseous reaction product from a non-electricity-generating reaction of the feedstock material in the first region. A controller receives an input corresponding to an instruction to control the rate of reaction product production and/or electrical current production. In response, the controller can partially or completely interrupt electron flow along the electrical circuit and/or change a rate at which reactants other than the feedstock material are supplied to the fuel cell.

Abstract: Systems and methods for extracting and processing gases from submerged sources are disclosed. A system for removing and processing a gas from a submerged area in accordance with a particular embodiment includes a membrane or other open-bottom structure having a port and being disposed over at least a portion of the submerged area so as to at least partially enclose a volume of the gas. The system can further include a chemical reactor coupled to the open-bottom structure to receive the gas, and positioned to conduct a non-combustion reaction to dissociate a constituent from a donor substance of the gas.

Abstract: Methods for removing and preventing the buildup of unwanted deposits and varnishes on combustion chamber surfaces, particularly injector-igniter components that are exposed to combustion events. A method of removing deposits from an injector-igniter comprises monitoring the current across a pair of electrodes in the injector-igniter, comparing the current with a predetermined threshold level, and performing a cleaning cycle if the current exceeds the threshold level. The cleaning cycle may comprise injecting oxidant through the injector-igniter and into the combustion chamber. The cleaning cycle may further comprise ionizing the oxidant with an electrical discharge having a first polarity and ionizing the oxidant a second time with an electrical discharge having a second polarity. In other cases the cleaning cycle comprises injecting hydrogen through the injector-igniter and into the combustion chamber. In still other cases the cleaning cycle may comprise injecting coolant onto the electrodes.

Abstract: In one embodiment of the present invention an electrolytic cell is provided comprising a containment vessel; a first electrode; a second electrode; a source of electrical current in electrical communication with the first electrode and the second electrode; an electrolyte in fluid communication with the first electrode and the second electrode; a gas, wherein the gas is formed during electrolysis at or near the first electrode; and a separator; wherein the separator includes an inclined surface to direct flow of the electrolyte and the gas due to a difference between density of the electrolyte and the combined density of the electrolyte and the gas such that the gas substantially flows in a direction distal to the second electrode.

Abstract: Fuel cells for selectively reacting a feedstock material with or without generating electricity, and associated systems and methods are disclosed. A fuel cell system in accordance with a particular embodiment includes a first electrode positioned in a first region, a second electrode positioned in a second region, an ion-transport medium between the first and second regions, and an electrical circuit connected between the first and second electrodes. The system is operable in a first mode to react the feedstock material by a non-electricity-generating reaction to produce a product and in a second mode to react the feedstock material by an electricity-generating reaction to produce electricity. A controller receives an input (e.g., corresponding to a change in demand for electricity) and causes the system to switch between operating in the first mode and operating in the second mode in response to the input.

Abstract: In one embodiment of the present invention an electrolytic cell is provided comprising a containment vessel; a first electrode; a second electrode; a source of electrical current in electrical communication with the first electrode and the second electrode; an electrolyte in fluid communication with the first electrode and the second electrode; a gas, wherein the gas is formed during electrolysis at or near the first electrode; and a separator; wherein the separator includes an inclined surface to direct flow of the electrolyte and the gas due to a difference between density of the electrolyte and the combined density of the electrolyte and the gas such that the gas substantially flows in a direction distal to the second electrode.

Abstract: The present disclosure is directed to various embodiments of systems and methods for reducing the production of harmful emissions in combustion engines. One method includes correlating combustion chamber temperature to acceleration of a power train component, such as a crankshaft. Once the relationship between acceleration/deceleration of the component and combustion temperature are known, an engine control module can be configured to adjust combustion parameters to reduce combustion temperature when acceleration data indicates peak combustion temperature is approaching a harmful level, such as a level conducive to the formation of undesirable oxides of nitrogen. Various embodiments of the methods and systems disclosed herein can employ injectors with integrated igniters providing efficient injection, ignition, and complete combustion of various types of fuels.

Abstract: Fuel injector-igniters with variable gap electrodes. A fuel injector-igniter comprises a housing, an actuator disposed in the housing, and a valve including a valve head operative to open and close against a valve seat in response to activation of the actuator. An electrode cage surrounds the valve head and includes at least one aperture. At least one reed electrode extends from the electrode cage to form a gap between the reed electrode and the housing. The valve head includes a magnet, such as a permanent magnet, wherein the magnet is operative to move the reed electrode toward the electrode cage when the valve head opens, thereby increasing the gap.

Abstract: Devices for treating chemical compositions of a sample and methods for use thereof are disclosed here. In one embodiment, for example, a device may include a container; an opening; a magnetic component that induces a magnetic field across a portion of the device; and a sorptive media loaded within the container. The device may further comprise a magnetizable fluid loaded within the container. The sorptive media may be configured to filter a composition from a magnetizable fluid. The magnetic field may be configured to drive filtration of the magnetizable fluid containing composition after reacting the composition in order to remove or separate constituents of the composition.

Abstract: Dynamic sensors for sensing and adaptively controlling various events, operations and/or conditions in various systems including combustion engines and thermochemical regeneration systems are disclosed. A dynamic sensor includes one or more transducer components for detecting conditions and events and generating detected signals, a controller for receiving and processing detected signals to generate an output signal for controlling one or more conditions, a transceiver component that can be controlled using radio frequency, acoustic or other means, and that can report the output signal continuously, periodically or when interrogated, a memory for storing instructions, calibration data and/or measured data, and an energy harvester component that harvests energy from events to power one or more components of the dynamic sensor.

Abstract: A system for transferring and igniting a fuel comprising a fuel supply and a cryogenic fuel processor connected to the fuel supply and operative to remove impurities from the fuel. The system includes a power supply and an injector-igniter. The injector-igniter includes an injector housing connected to the power supply and having a fuel inlet connected to the fuel processor. An actuator body is disposed in the housing and a conductor sleeve is connected to the power supply and supported between the actuator body and injector housing with a first annular gap between the injector housing and the conductor sleeve. There is also a second annular gap between the actuator body and conductor sleeve, wherein the first and second annular gaps are in fluid communication with the fuel inlet, whereby fuel provides a dielectric between the conductor sleeve and the injector housing.

Abstract: Apparatuses, systems, and methods for loading and/or unloading a substance into or from a sorption media. A substance is presented at an edge of the sorption media, which comprises parallel layers of a sorption material. To load (i.e., via absorption and/or adsorption) the substance into the sorption media, heat is transferred away from the sorption media, a loading voltage is applied to the sorption media, and/or a pressure is increased relative to the sorption media. To unload the substance from the sorption media, heat is transferred into the sorption media, a voltage of an opposite polarity from the loading voltage is applied to the sorption media, and/or a pressure is decreased relative to the sorption media. In some embodiments, the sorption media includes surface structures that may load molecules of the substance.

Abstract: In one embodiment of the present invention an electrolytic cell is provided comprising: a containment vessel; a first electrode; a second electrode; a source of electrical current in electrical communication with the first electrode and the second electrode; an electrolyte in fluid communication with the first electrode and the second electrode; a gas, wherein the gas is formed during electrolysis at or near the first electrode; and a separator; wherein the first electrode is configured to control the location of nucleation of the gas by substantially separating the location of electron transfer and nucleation.

Abstract: The present disclosure is directed to injectors with integrated igniters providing efficient injection, ignition, and complete combustion of various types of fuels. These integrated injectors/igniters can include, for example, insulators with adequate mechanical and dielectric strength to enable high-energy plasma generation by components that have very small dimensions, multifunction valving that is moved to injector multiple bursts of fuel and to induce plasma projection, a fuel control valve at the interface to the combustion chamber for the purpose of eliminating fuel drip at undesired times, and one or more components at the interface of the combustion chamber for the purpose of blocking transmission of combustion sourced pressure.

Abstract: Techniques, methods and systems for preparation liquid fuels from hydrocarbon and carbon dioxide are disclosed. The present invention can transform hydrocarbon and carbon dioxide generated from organic feed stocks or other industrial emissions into renewable engineered liquid fuels and store them in a cost-efficient way. The method of the present invention includes: supplying hydrocarbon and carbon dioxide to a heated area of a reaction chamber in controlled volumes; forming carbon monoxide by the energy provided by the heated area; transporting carbon monoxide and hydrogen to an reactor in controlled volumes; supplying additional hydrogen to the reactor; regulating the pressure in the reactor by adjusting the controlled volumes in order to achieve a predetermined object; forming the liquid fuel in the reactor according to the predetermined object; and, storing the liquid fuel in a storage device.

Abstract: In one embodiment, a gas hydrate conversion system is provided comprising a floating factory, an appendage for harvesting a gas hydrate from an oceanic hydrate deposit, and one or more storage tanks. The floating factory comprises one or more heat exchange assemblies, one or more heat pump assemblies and an engine. In another embodiment, a method for harvesting hydrocarbon hydrate deposits is provided, the method comprising providing a gas hydrate conversion system; inducing release of methane from an oceanic hydrate deposit; capturing the methane from a primary methane capture zone and/or a secondary methane capture zone; and converting the methane to hydrogen and carbon.

Abstract: Chemical reactors with annularly positioned delivery and removal devices, and associated systems and methods. A reactor in accordance with a particular embodiment includes a reactor vessel having a light-transmissible surface proximate to a reaction zone, and a movable reactant delivery system positioned within the reactor vessel. The reactor can further include a product removal system positioned within the reactor vessel and positioned annularly inwardly or outwardly from the delivery system. A solar concentrator is positioned to direct solar radiation through the light-transmissible surface to the reaction zone.

Abstract: Techniques, systems, apparatus and material are disclosed for generating multi-purpose H2-dense fuel for isolating contaminants and storing energy. In one aspect, a method of producing a renewable multi-purpose biomaterial for isolating a hazardous contaminant from an environment and storing energy includes dissociating biomass waste using a thermochemical reaction to produce at least one of hydrocarbon and alcohol by applying waste heat recovered from an external heat source. The method includes dissociating the at least one of hydrocarbon and alcohol to generate carbon and hydrogen. Carbon dioxide emitted from an industrial process is harvested and reacted with the hydrogen to generate the hydrogen-dense fuel. A hazardous contaminant is dissolved in the hydrogen-dense fuel operating as a solvent to generate a liquid mixture that isolates the hazardous contaminant from the environment. The hazardous contaminant includes at least one of a carbon donor and a hydrogen donor.