Abstract: The hydrogen compressing system has a first unit that receives hydrogen at low temperature and low pressure and compresses it, a second unit that cools down the hydrogen received from the first unit and a third unit that heats up and pressurizes the hydrogen received from the second unit; the high-pressure hydrogen is stored in a tank and afterwards may be supplied, for example, to a tank of a vehicle; pressurization at the third unit (300) is achieved by introducing cold hydrogen gas, well below ambient temperature, received from the second unit into the tank and heating it while the tank is closed preferably till when the hydrogen inside the tank reaches ambient temperature; heating-based compression allows to easily obtain high pressure through a relatively simple system and without risk of reducing the purity of the hydrogen.

Abstract: A gas station for delivery of gas to appliances comprising a casing and a gas regulation device comprising at least a gas regulator and a filter. The gas regulation device is mounted within the casing which comprises a ground plate and a cover element secured onto the ground plate. The ground plate is configured for mounting to a wall or an external mounting post and comprises at least one spacer, so that the ground plate is attached to the wall or the external mounting post in such a way that a predefined gap is maintained between the ground plate and the wall or between the ground plate and the mounting post. The ground plate includes a flap which supports the gas regulation device and the cover element and a hook configured to hook the cover element in the ground plate via a locking element.

Abstract: A combined chemical injection and mixing system including an injection stream pipe, a target pipe disposed within the injection stream pipe, and a plurality of injection quills is described. The injection stream pipe encloses the plurality of injection quills, and the plurality of injection quills each independently includes a quill check valve and a quill flange. A method for mixing at least one chemical in a pipeline is also described. The method includes providing a chemical injection and mixing system configured to a pipeline, forming a pipeline treatment system, providing a fluid flow in the pipeline treatment system, injecting at least one chemical via the plurality of injection quills, and mixing the at least one injected chemical in a mixing zone of the chemical injection and mixing system, thereby mixing the at least one injected chemical in the fluid flow.

Abstract: A valve system for controlling a flow of material includes a pipeline including an upstream portion a downstream portion. The system includes a variable flow restrictor configured for providing a restrictive orifice within the pipeline and creating a pressure differential in the flow of material high-pressure material in the upstream portion and low-pressure material in the downstream portion. The system includes a low-pressure tube connected to the downstream portion and a low-pressure chamber connected to the tube and receiving low-pressure material. The chamber includes a secondary flapper configured for selectively blocking the tube. The system includes a primary flapper disposed between the upstream portion and the low-pressure chamber and configured to be disposed in one of a first and second position. The flapper is held in the first position by the pressure differential. The flapper moves to the second position blocking the pipeline when a leak occurs.

Abstract: The present disclosure relates to the technical field of lamps and discloses a multistage parallel type loop-free decorative light string, which includes a main power cable and at least one branch power cable connected in parallel to the main power cable, wherein a connection between the main power cable and the branch power cable is externally sleeved with a light string connector; and the branch power cable is electrically connected with a plurality of second lamps. A lamp cover is provided with a wire hiding slot that can store a tail end of the branch power cable.

Abstract: An outdoor lighting device is disclosed having a stand and a curved COB LED assembly disposed beneath a dome, the curved COB LED assembly and dome mounted atop the stand and configured to propagate light in a downward direction and a direction laterally away from the stand.

Abstract: A landing pad is provided. The landing pad includes a first body, a second body, an elastic component, and a fastening component. The first body includes a pad portion and a first coupling portion. The pad portion is configured for landing of a drone. The first coupling portion is connected to the pad portion. The second body includes a mounting portion and a second coupling portion. The mounting portion is configured for mounting to a position to be mounted. The second coupling portion is connected to the mounting portion. The second coupling portion is configured for coupling with the first coupling portion. The elastic component is disposed between the first coupling portion and the second coupling portion. The fastening component is configured for combination of the first coupling portion, the second coupling portion, and the elastic component.

Abstract: A vehicle light includes: a light lens having a base panel made of a transparent plastic material, an outer paint layer disposed on an outer surface of the base panel, and an inner paint layer disposed on an inner surface of the base panel and including a light-transmitting hole formed therein; and a light source installed to be spaced apart from the light lens, in which light from the light source is transmitted out of the light lens through the light-transmitting hole and the base panel.

Abstract: Semiconductor light emitting elements are configured to be mounted on the substrate, a frame is configured to be vertically provided on the substrate in an annular or oval-annular shape so as to surround the semiconductor light emitting elements, and a sealing portion is configured to seal an inner wall of the frame, an upper surface of the substrate inside the frame, and the semiconductor light emitting elements. The sealing portion includes a first resin portion configured to have a concave surface having at least one rotational plane having a central axis of the frame as a rotational axis, and a second resin portion configured to cover the concave surface of the first resin portion and having a convex external surface, and the sealing portion has an external surface in which an external surface of the first resin portion and an external surface of the second resin portion are integrated.

Abstract: A lighting device for a motor vehicle, wherein the lighting device has a circuit board with a multiplicity of light-emitting diodes arranged thereon, a transparent optical layer, and a reflector element, wherein the reflector element is arranged between the circuit board and the optical layer, wherein the reflector element has multiple segments into which the reflector element is subdivided, wherein a segment is associated with each light-emitting diode so that light emitted by the light-emitting diodes can be reflected by the reflector element and can pass through the optical layer. Two light-emitting diodes are arranged in a segment. In addition, a lighting system and a motor vehicle are provided.

Abstract: A light emitting assembly, a vehicle light, and a vehicle. The light emitting assembly comprises a reflector unit and a light emitting unit; the light emitting unit is provided with a carrier and a light source mounted on the carrier, and a reflecting surface is provided on one side of the reflector unit, to reflect light emitted by the light source, wherein the light emitting unit is connected to the side of the reflector unit opposite to the reflecting surface by means of the carrier and the reflector unit.

Abstract: A lighting device (1) for a vehicle headlamp is provided. The lighting device includes an illuminant (2), a collimator (4), a mirror device (5) with a reflection surface (5a), and a DMD device (6). The mirror device (5) is arranged downstream of the collimator (4), wherein the reflection surface (5a) of the mirror device (5) is configured to reflect a first part of the light from the illuminant and to transmit a second part of the light from the illuminant. The mirror device (5) is configured in such a way that the reflected part is free of UV light and the transmitted part has UV light. The DMD device (6) is configured to modulate and deflect the first part of the light from the illuminant.

Abstract: A headlight for a motor vehicle includes a housing which is provided with a translucent cover pane to allow light to exit from the headlight and in which a first lighting device and a second lighting device are located. The first lighting device is provided for generating at least one portion of a dipped beam and/or a full beam of the headlight, and the second lighting device is provided for generating at least one portion of a limiting light and/or a daytime running light of the headlight. The headlight also includes a diaphragm which is opaque in a predefined diaphragm section except for a plurality of light exit points provided therein. Light is emitted via the predefined diaphragm section toward the cover pane by the second lighting device in order to generate the at least one portion of the limiting light and/or the daytime running light.

Abstract: A headlamp device includes a headlamp, an object detector, and a controller. The headlamp is mounted on a vehicle and includes a light emitting unit composed of multiple light emitting cells. The object detector detects an object around the vehicle and generates an object detection signal including object coordinates corresponding to a location of the detected object. The controller controls light of the headlamp based on information on the object coordinates. The controller may control the light emitting unit such that at least some light emitting cells are turned off according to an object detection signal.

Abstract: A lighting device for vehicles with a first lighting unit having a light source and a light beam surface for emitting light and with a second lighting unit containing a light source and a flat light guide having opposite flat sides and narrow sides connecting the same for backlighting the first lighting unit. The flat light guide of the second lighting unit has a backlighting section and a linear light section. The backlighting section is arranged behind the first lighting unit and a front flat side of the flat light guide in the backlighting section serves as a light decoupling surface for the light decoupling of a first part of the light coupled into the flat light guide. The linear light section is at least partially arranged next to the first lighting unit. A narrow side of the flat light guide serves as a light decoupling line.

Abstract: A light guide assembly for a vehicle, the light guide assembly including a light guide having a first end face. The light guide assembly further includes a first light source and a second light source having different heights and being mounted on a common support plane. Further, the first and second light sources are arranged to emit light rays in a light emission direction toward the first end face. The first end face includes a first inlet portion configured to receive light from the first light source and a second inlet portion configured to receive the light from the second light source. The first and second inlet portions are offset from one another in the light emission direction in such a way that the space between the common support plane and each inlet portion is proportional to the height of the light source in front of the corresponding inlet portion.

Abstract: A light source of a matrix arrangement of light sources of a motor vehicle lighting module includes a substrate having an upper face, a lower face opposite the upper face, and an electronic circuit. At least one light-emitting element is mounted on the upper face of the substrate and includes a light-emitting part. Also included is an optical device for forming the light beams emitted by the light-emitting element, and the lower face includes connection contacts connected to the electronic circuit, the electronic circuit being adapted to power the at least one light-emitting element. The light-emitting part of at least one light-emitting element having a surface area of less than 40,000 ?m2. The optical device includes an optical element that is produced by being molded onto the at least one light-emitting element and at least partially onto the upper face of the substrate.

Abstract: The present invention relates to a light-emitting device, a vehicle lamp and a vehicle, wherein a light-emitting device is used for a vehicle, the vehicle having a vehicle coordinate system that comprises three coordinate axes (X, Y, Z), the light-emitting device having a housing, a light-emitting assembly accommodated in the housing and a lens arranged in front of the light-emitting assembly, the lens having a light-transmitting zone assigned to the light-emitting assembly, wherein the light-transmitting zone is formed by a first strip unit and a second strip unit that extend obliquely with respect to the corresponding coordinate axis (Z) of the vehicle coordinate system, the first strip unit and the second strip unit intersecting each other, the intersection part being a convex or concave pillow-shaped unit.

Abstract: A receptacle connector assembly is presented herein. The receptacle connector assembly includes a receptacle terminal having a connection portion defining an aperture configured to receive a corresponding plug terminal along a longitudinal axis and a terminal housing defining an opening and a cavity in which the connection portion is disposed. The connection portion is sized, shaped, and arranged within the cavity to be movable along a lateral axis perpendicular to the longitudinal axis.

Abstract: A collimator (1) for collimating light uses a plurality of optical surfaces each forming optical boundary surfaces with a change in the optical density. The collimator (1) has a substantially flat light entry surface (2), a convex light exit surface (4) and a totally reflective side wall (3) connecting the light entry surface (2) to the light exit surface (4). A portable lighting device is provided having such a collimator. In order to provide a collimator and a portable lighting device having a collimator which achieves a better light distribution, the light exit surface of the collimator has light-refracting structures (5).

Abstract: A light-emitting device includes: a substrate including a base and a side wall; a plurality of semiconductor laser elements arrayed in a first direction on an upper surface of the base; a sealing member fixed to the substrate, wherein the sealing member and the substrate define a sealed space in which the semiconductor laser element is located; and a lens array disposed above the sealing member, the lens array including a plurality of lens sections arrayed in the first direction. In the lens array, a maximum outer diameter of each lens sections is 1.25 times or more than an inter-vertex distance between adjacent ones of the lens sections in the first direction.

Abstract: A light source unit includes light-emitting elements, a light-shielding body, and a rod lens including a first end surface, a second end surface, and a side surface. The light-shielding body is separated from the side surface, covers the side surface, includes an opening exposing at least a portion of the second end surface, and includes a tip protruding further than the second end surface in a first direction from the first end surface toward the second end surface. A first plane crosses the first direction and is at the same first-direction position as the tip. A second plane crosses the first direction and is at the same position as the second end surface or between the tip and second end surface in the first direction. A first surface area of the opening at the first plane is greater than a second surface area of the opening at the second plane.

Abstract: The described technology is generally directed towards a side emitting light emitting diode (LED) package with a shaped cap interface, and LED displays including the disclosed LED packages. A side emitting LED package with a shaped cap interface can include a substrate, an LED chip, a light converter, and a cap. The LED chip can be positioned over the substrate, and the light converter can comprise a substantially transparent material also positioned over the substrate and surrounding the LED chip. The cap can be positioned over the light converter to inhibit emission of light perpendicular to the surface of the substrate. An upper surface of the light converter, and a lower surface of the cap, can be shaped to form a shaped cap interface. The shaped cap interface reflects light differently than a flat cap interface, and achieves greater mechanical strength.

Abstract: A trim attachment system includes a light fixture housing and a first coiled spring bracket having a first coil section and a first elongated section. The first elongated section is positioned in the light fixture housing and attached to the light fixture housing, where the first coil section is attachable to a trim to pull up the trim toward an opening of the housing. The trim attachment system further includes a second coiled spring bracket having a second coil section and a second elongated section. The second elongated section is positioned in the light fixture housing and attached to the light fixture housing, where the second coil section is attachable to the trim to pull up the trim toward the opening of the housing.

Abstract: An underwater light device is disclosed. The underwater light device comprises at least one source of white light and at least one source of colored light. The light produced by the combination of the at least one source of white light and the at least one source of colored light has an altered color temperature value compared to the light produced by only the at least one source of white light. For example, the combination of the at least one source of white light and the at least one source of colored light may have a color temperature value that is decreased by about 1,000 kelvin to about 2,000 kelvin compared to light produced only by the at least one source of white light.

Abstract: The multi-lamp splicing apparatus includes a supporting base provided with several supporting surfaces; and a connector disposed on at least one of the supporting surfaces. The connector includes a support and a locking gear. The support and the corresponding one of the supporting surfaces form a first limiting space, and the locking gear is rotatably disposed in the first limiting space. The locking gear is provided with a locking column or a locking hole for connecting a lamp.

Abstract: An adjustable light fixture includes a frame configured to rotatably connect to a support and rotate about a first axis. A lamp assembly is connected to the frame. The lamp assembly includes a housing defining a cavity. A light emitter is supported in the cavity. A lens is connected to the housing. A pivot assembly rotatably couples the lamp assembly to the frame about a second axis offset from the first axis.

Abstract: A lighting device includes: a plurality of light sources that illuminate in all directions; a first detector that detects an installation orientation of the lighting device; and a controller that changes a light-emission pattern of each of the plurality of light sources according to the installation orientation of the lighting device detected by the first detector.

Abstract: The present invention discloses a lighting system assembled from lighting fixtures, including electrical connection sockets, electric connectors, a connecting structure, and plug connectors. A plurality of single lighting fixtures are assembled and mounted on the connecting structure by fitting the electrical connection sockets to the connecting structure so that the lighting fixtures can be easily assembled on the ceiling without complicated wiring.

Abstract: An LED lighting fixture has a plurality of LEDs mounted on a board, together forming an LED module. A covering is provided on the LED module on an opposite side of the board relative to the LEDs. The covering has at least one fin extending substantially perpendicular to the LED module. Each fin has an internal channel in which a heat-conducting element is provided. The heat-conducting element has a greater thermal conductivity than the fin and is substantially encapsulated by the fin.

Abstract: A storage device for storing a removable flashlight. The storage device includes an electrical switch surrounded by a cover plate. A power source is electrically connected to the electrical switch. A removable flashlight is removably connected to the storage device. The removable flashlight is stored in the storage device and removable from the storage device when needed for use.

Abstract: Provided is a boiler including a heat generation body, a container including the heat generation body, and a water pipe to be heated by heat generated by the heat generation body under environment where the inside of the container is filled with gas with higher specific heat than that of air.

Abstract: A portable steam generator includes a power source in a housing, a water tank in the housing, a heating element in the housing and configured to heat water in the water tank to produce steam using power from the power source, and a track on the housing configured to support the portable steam generator in an installation position and allow manual removal from the installation position. A pre-plumbed integrated bathroom panel includes a plumbing inlet configured to provide water to the panel, a water outlet connected to the plumbing inlet, a steam outlet connected to the plumbing inlet and a heating element, a sanitizing outlet connected to the plumbing inlet and an additive generator, valves for directing water from the plumbing inlet to the at least one water outlet, the at least one steam outlet, and the at least one sanitizing outlet, and a controller configured to operate at least the plurality of valves.

Abstract: A high excess air burner includes a housing including a generally tubular body enclosing an air chamber, a nozzle located in the air chamber and spaced radially inwardly of the generally tubular body, a fuel inlet configured to supply a variable volumetric flow rate of fuel, an air inlet configured to supply air to the air chamber, a first combustion cavity having a first inlet opening communicating with the fuel inlet for receiving the variable volumetric flow rate of fuel, a second combustion cavity having a second inlet opening communicating with the first combustion cavity for receiving the first fuel-air mixture, and a third combustion cavity having a third inlet opening communicating with the second combustion cavity for receiving the second fuel-air mixture. The burner including one or more components (e.g., nozzle, rear cover) to improve flame characteristics, such as flame stability or consistency, and/or one or more components or features to improve flame detection capability.

Abstract: The present invention is a hydrotorch assembly that is configured to use compressed air for extinguishing flame to prevent the burnback and explosion. The hydrotorch assembly includes a hydrogen source and a hydrogen supply line having a first end connected to and in fluid communication with the hydrogen source. A torch having a first gas conduit is also provided. The first gas conduit includes an inlet connected to a second end of the hydrogen supply line, and an outlet connected to and in fluid communication with a nozzle through which exiting gas is ignited to produce a flame that extends outwardly from the nozzle. A compressed air source, and a compressed air supply line having a first end connected to and in fluid communication with the compressed air source, and a second end connected to the first gas conduit of the torch near the inlet and in fluid communication with the first gas conduit and the hydrogen supply line is also provided.

Abstract: A method and device for monitoring combustible matter in a hot gaseous stream and generating a control signal, a controlled jet of an oxidant is injected into the gaseous stream with a lance extending between a window of a monitoring device and the flow path of the gaseous stream, the lance defining a line of sight between the window and the gaseous stream in the flow path, the combustible matter burns with the oxidant in a flame in the gaseous stream in front of the lance, one or more properties of the flame which are correlated with the concentration of combustible matter in the gaseous stream are detected by the monitoring device through the line of sight and the window and the monitoring device processes the one or more detected flame properties and generates a control signal on the basis of the one or more detected flame properties.

Abstract: The plate-formed grate element (1, 2) has a top wall (12), a bottom wall (13), a front end (14) and a back end (15). The front end has a lower inwardly curved wall portion (16) adapted to maintain a predetermined clearance with a back tip edge of a corresponding grate element. An internal cooling fluid chamber (18) includes an internal front cooling fluid channel (19) extending along the front end (14) of the grate element. The grate element has an outwardly curved front wall (22) having a nominal wall thickness varying by less than +35 percent and extending from the top wall of the grate element to the lower inwardly curved wall portion of the front end, and a front tip edge (23) of the front end is formed by the outwardly curved front wall at its connection with the lower inwardly curved wall portion.

Abstract: A method for the control of nitrogen oxides content in the combustion fumes of a thermal power plant is disclosed; the method comprises the on-site production of ammonia by the steps of: electrolysis of water as a source of hydrogen; separation of air as a source of nitrogen, formation of a make-up gas and synthesis of ammonia in a suitable synthesis loop; said on-site produced ammonia, or a solution thereof, is used for a process of reduction of nitrogen oxides in the combustion fumes.

Abstract: The invention relates to a method for operating a gas heater, in particular a gas heater for providing central heating and/or for providing domestic hot water, in particular a gas boiler, in particular a condensing boiler, wherein the method comprises the following steps: supplying a gas and a fuel gas into a mixing chamber of the gas heater and supplying a mixed gas from the mixing chamber to a burner of the gas heater, measure the differential pressure per unit time and/or provide a sensor signal to the control unit for determining a gas quantity, defined by a volume per unit time or a mass per unit time, before the gas is supplied to the mixing chamber, measure the differential pressure per unit time and/or provide a sensor signal to the control unit for determining a fuel gas quantity, defined by a volume per unit time or a mass per unit time, before the fuel gas is supplied to the mixing chamber and determining whether at least one operation condition of the gas heater is fulfilled based on the determine

Abstract: An ignition system for igniting a gas burner of an appliance includes a gas burner, an electric igniter assembly, a pilot light, and a controller. The pilot light is ignitable by the electric igniter assembly. The controller is configured to operate the electric igniter assembly for ignition of the gas burner, detect a power disruption event, ignite the pilot light using the electric igniter assembly in response to detecting the power disruption event, and use the pilot light for ignition of the gas burner during the power disruption event. Methods of operating the ignition system for igniting the gas burner of the appliance are also provided.

Abstract: A lid for a candle is provided. The lid comprises an inner housing which includes an inner housing aperture, as well as an iris including an iris guide section and at least two blades. The iris guide section has a respective blade guide slot for each of the at least two blades. Each of the at least two blades has opposing ends, and at least one bolt aperture at each of the opposing ends. A respective bolt extends through each at least one blade guide slot and each bolt aperture thereby engaging the at least two blades with the iris guide section. The iris has an open position and a closed position. In the open position, the inner housing aperture of the lid is open, and in the closed position, the blades of the iris extend over the inner housing aperture, thereby closing the inner housing aperture.

Abstract: A gas turbine combustor according to at least one embodiment, includes: a less combustible fuel flow control part for controlling, independently of each other, amounts of less combustible fuel supplied to a first fuel injector and a second fuel injector; a highly combustible fuel flow control part for controlling, independently of each other, amounts of highly combustible fuel having a higher combustion speed than the less combustible fuel and supplied to the first fuel injector and the second fuel injector; and a controller configured to control the less combustible fuel flow control part and the highly combustible fuel flow control part such that a relative ratio of a first ratio of the highly combustible fuel to whole of first fuel injected by the first fuel injector and a second ratio of the highly combustible fuel to whole of second fuel injected by the second fuel injector changes according to an operating condition of a gas turbine.

Abstract: A fire pit is disclosed that includes a burn chamber, a removable fire grate, and a removable ash pan. The burn chamber is defined by an inwardly facing surface and a bottom. The removable fire grate is positioned within the burn chamber and supports combustible fuel for burning. The removable fire includes a plurality of holes sized to permit passage of ash from the combustible fuel, and at least one grip feature sized and shaped to permit a user to remove the removable fire grate from the fire pit by lifting the removable fire grate vertically through the burn chamber. The removable ash pan is positioned within the burn chamber beneath the removable fire grate, and includes, a side wall, a bottom, and at least one grippable surface configured to permit the user to remove the removable ash pan from the fire pit by lifting the removable ash pan vertically through the burn chamber.

Abstract: A portable stove is provided. The stove includes a body with an exterior wall, a bottom with foldable legs attached to it, and a top with an opening to which can be affixed a reversible cooking attachment, the cooking attachment having an outward orientation and an inward orientation. Inside the walls of the stove body are an electronics housing, an electric fan with an adjustable speed above the electronics housing, a shield above the fan, a removable ash pan above the shield, and a burn chamber with a fire grate above the ash pan. The cooking attachment further includes a mounting ring and foldable arms which are connected by a collar. The collar projects up from the stove in the outward orientation and into the stove in the inward orientation. The mounting ring has a rounded lip. Each foldable arm has a supporting side with dogs and an angled tip.

Abstract: An apparatus for stoking a fire may include: at least one tube including a proximal region comprising a first aperture, a distal region comprising a second aperture, and hollow interior region connecting the first aperture and the second aperture, such that the first aperture and the second aperture are in fluid communication with each other; and a plate extending distally from the distal region of the tube, wherein the plate includes at least one fuel-engaging feature and a fluid-diverting region, wherein the fluid diverting region diverts fluid emitted from the second aperture, such that a path of the fluid changes.

Abstract: A system for controlling an appliance having a plurality of burners operated by a plurality of digital gas valves includes a plurality of control selectors that are configurably assigned to a specified burner or burners.

Abstract: An electric flame burner uses an electric ignition circuit in which an input terminal of a switching power supply circuit is connected to a power supply, an input terminal of a booster circuit is connected to an output terminal of a switching power supply circuit, and an input terminal of an ion needle module is connected to an output terminal of the booster circuit. An output terminal of the ion needle module is close to an arc-striking ion generator, forming an ionization point pair. A power control circuit transmits a PWM signal to the switching power supply circuit, so that the latter outputs a corresponding signal to the booster circuit, which transmits a corresponding signal to the ion needle assembly to control the ionization point pair to achieve ignition through arc-striking, generating a flame with an adjustable output power, thereby simplifying and improving the reliability of the electric ignition circuit.

Abstract: An adjustable mounting system for mounting a control panel on a housing of a home cooking appliance, and a home cooking appliance having an adjustable mounting system, are provided. The adjustable mounting system includes a control panel having a mounting pin extending from a rear surface of the control panel and a mounting box fixed on the housing. The mounting box has a first opening that receives the mounting pin into an interior of the mounting box. The adjustable mounting system includes a locking device that engages the mounting pin and the mounting box and secures the mounting pin in the interior of the mounting box, which secures the control panel to the housing. A movement of the locking device with respect to the mounting box adjusts a position of the control panel with respect to the housing.

Abstract: A cooking exhaust hood system, that has an exhaust hood adapted to be located over at least one cooking appliance and an exhaust fan connected to the exhaust hood, with the exhaust fan having a controllable exhaust air flow volume. A camera monitors a surface of the at least one cooking appliance and provide an image signal representing a visual status of the at least one cooking appliance. An image processing controller is connected to an image database and is configured to receive the image signal and to compare the visual status of the at least one cooking appliance based on the image signal to stored images in the image database. The image processing controller then output a cooking appliance status signal. An exhaust fan controller is provided that is connected to the exhaust fan. The exhaust fan controller is configured to receive the cooking appliance status signal and adjusts the exhaust fan accordingly.

Abstract: A system includes: a heat generator obtaining heat from a heat source and having a generator outlet port and a generator return port; a central heating circuit having a heating feed port and a heating return port; a tank having a top portion and a bottom portion, the tank containing a heat storing medium; a first tapping coil immersed in the heat storing medium in the bottom portion of the tank; and a second tapping coil immersed in the heat storing medium in the top portion of the tank The heat generator, second tapping coil, central heating circuit, and first tapping coil are fluidly connected in series to allow fluid to flow from the heat generator via at least one of the second tapping coil, the central heating circuit, and the first tapping coil back to the heat generator The system includes first, second and third three-way valves.