Abstract: Methods and systems and are presented for estimating the amount of natural gas provided to a vehicle at a natural gas time-fill filling station. The methods comprise measuring and wirelessly transmitting pre- and post-fill pressures measurements of compressed natural gas in a compressed natural gas storage tank on-board a natural gas vehicle.

Abstract: The present invention relates to pump systems and engine systems having graphene drums. In embodiments of the invention, the graphene drum can be utilized in the main chambers and/or valves of the pumps and engines.

Abstract: An improved an audio speaker having an electrostatic membrane pump. The electrostatic membrane pump can be an electrostatic graphene membrane pump. The method of making and using the audio speaker having the electrostatic membrane pump.

Abstract: A separation and containment system is provided. The separation and containment system can contain natural gasses, e.g., compressed natural gas (CNG) and liquefied natural gas (LNG), within a natural gas vehicle (NGV) service area, and separate the NGV service area from a conventional service area. The separation and containment system utilizes one or more barriers, such as industrial fabric/vinyl materials that meet various regulatory safety standards applicable to NGVs. The separation and containment system is easily constructed, dismantled, and resized/adapted in accordance with desired operating conditions.

Abstract: Graphene materials having encapsulated gas cells and methods to make and use same. Alternative electrically conductive and atomically thin materials (such as graphene oxide) can be used alternatively or in addition to the graphene in the graphene encapsulated micro-bubble materials.

Abstract: An improved electrically conductive membrane pump/transducer. The electrically conductive pump/transducer includes an array of electrically conductive membrane pumps that combine to move a larger membrane (such as a membrane of PDMS). The electrically conductive membranes in the array can be, for example, graphene-polymer membranes.

Abstract: An improved electrically conductive membrane pump/transducer. The electrically conductive pump/transducer includes an array of electrically conductive membrane pumps that combine to move a larger membrane (such as a membrane of PDMS). The electrically conductive membranes in the array can be, for example, graphene-polymer membranes.

Abstract: An improved electrostatic membrane pump/transducer having an array of electrostatic membrane pump transducers that utilize a venturi channel. The electrically conductive membrane of the electrostatic membrane pump transducers can be a polymer membrane coated with a conductive coating. The electrostatic membrane pump transducers can be optionally controlled such that one set is out of phase with another set.

Abstract: A system for producing a torrefied biomass that at least partially replaces coal in coal-fired processes. The system comprises: a feed bin for receiving carbonaceous feedstock, conveying the ingested feedstock and treating the ingested feedstock to produce modified feedstock; a dryer that treats the modified feedstock to produce dried feedstock, the dryer including a heater that warms the dried feedstock to produce heated feedstock; a torrefaction subassembly; a particle downsizing system; a separator for separating minerals from the feedstock; and a compactor.

Abstract: The combustion gases in a used oil furnace are discharged from the combustion chamber through an opening in the upper rear portion of the combustion chamber to direct the combustion gases into an upper header. An array of vertically oriented flue tubes extends downwardly from the upper header to a lower header before being discharged through horizontally opposing discharge openings. Ventilation air is blown into the rear of the furnace past and around the vertical flue tubes and is then forced in to a laminar path extending circumferentially around the combustion chamber by an air sweep shroud spaced from the combustion chamber by an annular gap. The ventilation air is then collected in a forward discharge chamber for discharge through louvered ventilators into the adjacent ambient atmosphere.

Abstract: An improved electrically conductive membrane pump/transducer. The electrically conductive pump/transducer includes an array of electrically conductive membrane pumps that combine to generate a desired sound by moving a membrane (such as a membrane of PDMS), a piston, and/or by the use of pressurized airflow in the absence of such a membrane or piston. The electrically conductive membranes in the array can be, for example, graphene-polymer membranes. The electrically conductive pump can include mid-range, tweeter, and sub-woofer speakers.

Abstract: An improved electrically conductive membrane pump/transducer, such as a graphene membrane transducer.

Abstract: The present invention may be embodied as a biofuel heating system for converting biofuel to heat energy to be delivered to a load comprising a combustion chamber defining a combustion zone, an under-fire zone, and an over-fire zone. A controller operates at least one of a fan, an under-fire damper, and an over-fire damper based on at least one operating parameter such that air flows along a flow path extending from at least one of an under-fire port and an over-fire port, through the combustion chamber, through a burn-out port, through a burn-out chamber, through a heat exchange port, through a heat exchange chamber, and out of an exhaust port. The heat exchange system transfers heat energy from air flowing through the heat exchange chamber to the working fluid.

Abstract: A system for substance separation and energy recovery by thermal treatment is disclosed. The system includes a thermal treatment reactor, a circulation piping, a heat exchanger, a discharge pipeline, a latent heat recovering device, a gasifier, and a combustion furnace. The substance is fed into the thermal treatment reactor for heating the treated substance so as to produces a gaseous substance by evaporation or pyrolysis. The treated substance is separated into the gaseous substance circulating between the heat exchanger and the thermal treatment reactor and a residual substance being fed into the thermal treatment reactor. The increased gaseous substance, during the circulation process, is fed into a latent heat recovery device, wherein the gaseous substance exchanges heat with a cold fluid and condenses to release latent heat, forming a liquid condensed substance and a non-condensed substance.

Abstract: An improved electrically conductive membrane pump/transducer. The electrically conductive pump/transducer includes an array of electrically conductive membrane pumps that combine to generate a desired sound by moving a membrane (such as a membrane of PDMS), a piston, and/or by the use of pressurized airflow in the absence of such a membrane or piston. The electrically conductive membranes in the array can be, for example, graphene-polymer membranes. The electrically conductive pump can include mid-range, tweeter, and sub-woofer speakers.

Abstract: The present invention discloses a portable solar cooker, belonging to the field of solar heat utilization. The solar cooker comprises an upper functional assembly, a lower control assembly and a rotary apparatus which are sequentially connected, wherein the upper functional assembly is configured to reflect sunlight, collect heat in a focusing manner and further heat water or foods, the upper functional assembly is closed to form a box body when being in a non-operative state, and the upper functional assembly is opened when being in an operative state; the lower control assembly is connected with the upper functional assembly, and makes the upper functional assembly be subjected to pitch adjustment; the lower control assembly is connected with the rotary apparatus, and the lower control assembly and the upper functional assembly are driven by the rotary apparatus to rotate so that tracking the sun is realized.

Abstract: An improved electrically conductive membrane pump/transducer. The electrically conductive pump/transducer includes an array of electrically conductive membrane pumps that combine to generate a desired sound by moving a membrane (such as a membrane of PDMS), a piston, and/or by the use of pressurized airflow in the absence of such a membrane or piston. The electrically conductive membranes in the array can be, for example, graphene-polymer membranes. The electrically conductive pump can include mid-range, tweeter, and sub-woofer speakers.

Abstract: An improved electrically conductive membrane pump/transducer. The electrically conductive pump/transducer includes an array of electrically conductive membrane pumps that combine to move a larger membrane (such as a membrane of PDMS). The electrically conductive membranes in the array can be, for example, graphene-polymer membranes.

Abstract: An improved electrically conductive membrane pump/transducer. The electrically conductive pump/transducer includes an array of electrically conductive membrane pumps that combine to generate a desired sound by moving a membrane (such as a membrane of PDMS), a piston, and/or by the use of pressurized airflow in the absence of such a membrane or piston. The electrically conductive membranes in the array can be, for example, graphene-polymer membranes. The electrically conductive pump can include mid-range, tweeter, and sub-woofer speakers.

Abstract: An improved electrically conductive membrane pump/transducer. The electrically conductive pump/transducer includes an array of electrically conductive membrane pumps that combine to move a larger membrane (such as a membrane of PDMS). The electrically conductive membranes in the array can be, for example, graphene-polymer membranes.