Abstract: An apparatus and a method are provided for a flexible work light comprising an elongate member comprising a translucent material capable of being shaped. A lighting source is housed within, and protected by, the elongate member. One or more support members are attached to the lighting source and extend from a proximal portion to a distal portion of the work light. An electronics housing and a plurality of end caps are respectively disposed on the proximal and distal portions of the work light.

Abstract: A light unit includes a bulb having a light source with lead wires and a separator, a switch member that includes a support member and a pair of spring terminals, and a socket having two or more conductive terminals and adapted to receive the bulb and the switch member. The switch member is adapted to cause the pair of spring terminals to contact one another to form an electrical short circuit across the pair of conductive terminals and the light source when the bulb is completely or partially removed from the socket. The lead wires form an electrical connection across the conductive terminals and the separator breaks contact between the pair of spring terminals when the bulb is seated in the socket.

Abstract: An LED lighting apparatus includes an LED light-emitting unit, a radar detector, a controller, and a translucent cover. The LED light-emitting unit has a plurality of LED chips. The radar detector transmits radio waves, receives radio waves reflected by an object, and detects a movement of the object based on a change in a wavelength of the received radio waves. The controller controls light emission of the LED light-emitting unit based on a result of the detection by the radar detector. The translucent cover covers the LED light-emitting unit in a main emission direction in which a center of the light emitted from the LED light-emitting unit travels, and allows light from the LED light-emitting unit and the radio waves from the radar detector to pass through. The radar detector is surrounded by the LED light-emitting unit in the main emission direction.

Abstract: According to one embodiment, an illuminating device includes a light source, a reflector, and a heat transfer member. The light source includes a light emitting element. The reflector is provided to surround the light source. The heat transfer member is provided outside the reflector and thermally bonded to the reflector.

Abstract: A temperature control device includes a first light source unit; a second light source unit, a temperature control effort for which is different from a temperature control effort for the first light source unit; a heat exchanger plate in contact with the first light source unit and the second light source unit; a single temperature control element configured to control temperature of the first light source unit and temperature of the second light source unit via the heat exchanger plate; and a thermal resistance adjustment part configured to adjust at least one of a value of a thermal resistance between the temperature control element and the first light source unit and a value of a thermal resistance between the temperature control element and the second light source unit.

Abstract: A lamp, in particular for the use in potentially explosive areas, has at least one illuminant, one cooling device for the illuminant and one lamp enclosure with a light emission opening, whereby at least the illuminant and the cooling device are arranged in the lamp enclosure. To improve a heat transmission from the illuminant, in particular from the cooling device to the lamp enclosure, in a simple and safe way without the additional use of a heat-conducting paste or the like, whereby respective manufacturing tolerances that can negatively influence a good thermal contact shall no longer be considered, the cooling device for heat transmission to the lamp enclosure has a longitudinally variable cooling element or is formed as such.

Abstract: An LED module includes an LED, a printed circuit board (PCB), a lens, a lens mask and a heat dissipation component; the heat dissipation component includes an aluminium-made heat dissipation frame, a heat-conducting fin, a connection assembly part and a plurality of heat dissipation plates, the aluminium-made heat dissipation frame is provided with a plurality of heat dissipation plate mounting holes that are arranged in parallel, the heat dissipation plates are amounted in the heat dissipation plate mounting holes on the aluminium-made heat dissipation frame in an insertion mode, the PCB is fixed on a bottom surface of the aluminium-made heat dissipation frame, and the heat-conducting fin is located between the PCB and the heat dissipation plates on the aluminium-made heat dissipation frame; and the aluminium-made heat dissipation frame is provide with a wire-threading position, and a location of the wire-threading position is between a corresponding electrical interface and a corresponding power-on interfac

Abstract: According to one embodiment, a luminaire includes a board provided in a main body part, a light-emitting element provided on a surface of the board, a surrounding wall member provided to surround the light-emitting element, and a joining part including a first portion which is provided between the board and the surrounding wall member and a second portion which is provided outside the surrounding wall member and covers at least a part of an outer wall of the surrounding wall member.

Abstract: An acoustic lighting tile (100) comprises a cavity (110) having a side wall (120) forming an opening in the cavity (110). An acoustic element (130) absorbs sound incident to the cavity (110). A light source carrier (140) is arranged along the side wall (120) and extends a first distance (D1) along a horizontal direction into the cavity (110). A light source (150) is mounted on the light source carrier (140) and emits light (L1, L2, L3) in a vertical main direction into the cavity (110), away from the opening of the cavity (110). A reflective surface (160) reflects at least a subset of the light (L1, L2, L3) emitted by the light source (150) towards the opening. A diffusing element (170) at least partially covers the opening at a second distance (D2) from the light source carrier (140) and diffuses light passing through the opening. The second distance (D2) is at least as large as the first distance (D1).

Abstract: A luminaire for installation in an electrical household appliance, e.g. a washing machine, includes, in one embodiment, two light-emitting diodes mounted on a circuit board, an elongated luminaire housing having a light exit area, which is formed by a light-permeable piece of the housing wall, in an area of a first longitudinal end of the luminaire housing, and also a light-conducting body having a light-conducting tube which extends inside the luminaire housing and which conducts, towards the light exit area, light which is given off by the light-emitting diodes. In one embodiment, a metalizing layer provided on the inner peripheral face of the light-conducting tube rests, in heat-transmitting contact with one or more conductive traces, on the upper side of the circuit board. In addition to its light-conducting function, the light-conducting tube thus fulfils a function for discharging heat from the circuit board.

Abstract: A wirelessly-controlled lighting device and method with an audio playing function is provided. The wirelessly-controlled lighting device includes a lighting assembly, an audio playing module, a first Bluetooth module connecting with the lighting assembly and the audio playing module and a second Bluetooth module connecting with the audio playing module. The first Bluetooth module is configured to receive a control signal from an external device, the control signal including a first control signal used to control the lighting assembly and a second control signal used to control the audio playing module. The second Bluetooth module is configured to receive audio data from the external device to transmit the audio data to the audio playing module for audio playing. The audio playing is controlled according to the second control signal received by the first Bluetooth module.

Abstract: A liquid fuel portable heater (100) comprises: a combustion chamber (101) having a fuel inlet with a nebuliser (13); an electric pump (10) having an inlet (11) for suctioning said liquid fuel from a tank (6), and an outlet (12) connected to said nebuliser (13); a control unit (20) configured so that, when the heater (100) is turned on, said control unit (20) supplies the electric pump with a sequence of pulses (115, 115?) with a non-zero voltage, and pause intervals (116) with a substantially zero voltage alternating with said pulses, wherein the average duration of the pulses (115, 115?) is less than the average duration of the pause intervals (116).

Abstract: The present invention is a gas burner having a mixture plenum that receives a gas air mixture. A port plenum is positioned above the mixture plenum. The port plenum comprises a plurality of ports for combustion of the gas air mixture. A quenching plate is positioned between the mixture plenum and the port plenum to separate the mixture plenum from the port plenum. The quenching plate comprises a plurality of apertures. The gas air mixture flows through the plurality of apertures and from the mixture plenum to the port plenum. The plenum, quenching plate and apertures retard back flow and auto ignition, and the quenching plate will quench a flame in the event of back flow.

Abstract: A gas torch head includes a main body, a burner tube releasably inserted into the main body, and a retainer configured to secure the main body and the burner tube together selectively. The retainer is mounted on one of the main body and the burner tube and is movable between a first position engaging with the other of the main body and the burner tube and a second position disengaging from the other of the main body and the burner tube, respectively.

Abstract: A burner port block assembly having a refractory block with a central passageway therethrough and a ceramic extension piece disposed at least partially in the central passageway of the refractory block. The extension piece has a distal end, a proximal end, and a sidewall that defines a central passageway extending between the distal end and the proximal end. The central passageway of the refractory block is provided with a first engagement structure and the sidewall of the extension piece is provided with a second engagement structure. Engagement of the first engagement structure with the second engagement structure connects the extension piece to the refractory block. The burner port block assembly may further include at least one ceramic fiber board having a hole therethrough disposed at the distal end of the refractory block and/or a gasket positioned between the refractory block and the extension piece.

Abstract: Briefly, apparatus and methods for detecting and terminating production of undesirable gases, such as carbon monoxide (“CO”), at a potential source, such as a household appliance. The apparatus and methods may determine a threshold level of the gas. In one embodiment, the method and apparatus may determine whether to provide power to a power supply input of a controller of a potential gas producing device based on the detected level of gas, where providing power to the power supply input of the controller of the potential gas producing device enables the controller of the potential gas producing device to provide power to the potential gas producing device. In another embodiment, when gas concentrations about a potential source are above a maximum threshold, the system communicates with a fuel supply valve of the potential source to cause the valve thereof to interrupt the supply of fuel to the potential source.

Abstract: The present disclosure relates to combustor and heat shield configurations for gas turbine engines. A heat shield for a gas turbine engine can include one or more effusion holes downstream of a dilution hole to restore a cooling film applied to the heat shield in the combustor. Effusion holes may be clustered in one or more configurations and rows following each dilution hole and/or on a trailing edge of each heat shield panel structure. One or more embodiments are directed to effusion holes positioned along a trailing edge of a heat shield panel.

Abstract: A combustion chamber comprises an upstream ring structure, a downstream ring structure and a plurality of circumferentially arranged combustion chamber segments. Each combustion chamber segment extends the full length of the combustion chamber. Each combustion chamber segment comprises a frame structure and at least an inner wall and the frame structure and the inner wall are integral. An upstream end of each combustion chamber segment is secured to the upstream ring structure and a downstream end of each combustion chamber segment is mounted on the downstream ring structure. The combustion chamber segments are manufactured by additive layer manufacture. The combustion chamber segments have a stiff frame structure which carries the structural loads, the thermal loads, surge loads and flameout loads and the frame structure distributes loads into adjacent components.

Abstract: The invention concerns a sequential liner for a gas turbine combustor, having a sequential liner outer wall spaced apart from a sequential liner inner wall to define a sequential liner cooling channel between the sequential liner outer wall and the sequential liner inner wall. The sequential liner outer wall includes a first face, a first adjacent face and a second adjacent face, the first and second adjacent faces each being adjacent to the first face, the first face of the sequential liner outer wall having a first convective cooling hole adjacent to the first adjacent face and a second convective cooling hole adjacent to the second adjacent face, each convective cooling hole being arranged to direct a convective cooling flow into the sequential liner cooling channel adjacent to each adjacent face. The invention also concerns a method of cooling using the sequential liner and a method of retrofitting a gas turbine.

Abstract: A combustor wall is provided for a turbine engine. The combustor wall includes a shell and a heat shield that is attacked to the shell. The heat shield includes a rail and a cooling element connected to the rail in a cavity. The cavity extends in a vertical direction between the shell and the heat shield. The cavity fluidly couples a plurality of apertures in the shell with a plurality of apertures in the heat shield.

Abstract: The present disclosure relates to gas turbine engines, and in particular to combustor swirlers and swirler configurations. In one embodiment, a swirler includes an inner passage for receiving a fuel injector and a plurality of outer passages concentrically arranged around the inner passage. The plurality of outer passages include an outer vane assembly including a plurality of vane elements arranged at a first angle and a first middle vane assembly include a plurality of vane elements arranged at a second angle, wherein the outer vane assembly is concentrically arranged around the first middle vane assembly, and wherein the outer vane assembly and first middle vane assembly are configured to produce a low net-swirl to control the penetration depth and improve premixing of a fuel air mixture for the fuel injector. According to another embodiment, the swirler includes a second middle vane assembly include a plurality of vane elements arranged at a third angle.

Abstract: A gas turbine system is provided. The gas turbine system includes a combustor assembly. At least one liquid fuel cartridge in the combustor assembly includes at least one flexible tube section coupled within a housing. An elongated inner tube section is coupled in fluid communication with the at least one flexible tube section and oriented within an elongated outer tube extending from the housing. At least one support member oriented within and coupled to an inner surface of the elongated outer tube substantially precludes transverse movement of the elongated inner tube section within the elongated outer tube.

Abstract: A gas turbine system includes a turbine combustor. The turbine combustor includes one or more first fuel injectors coupled to a head end of the turbine combustor and configured to deliver a first portion of a fuel to a first axial position of a combustion section of the turbine combustor. The turbine combustor also includes one or more second fuel injectors coupled to the turbine combustor axially downstream of the head end and configured to deliver a second portion of the fuel to a second axial position of the combustion section of the turbine combustor, the second axial position being downstream of the first axial position. The gas turbine system also includes a controller configured to deliver the first and the second portions of the fuel such that combustion of the fuel and oxidant within the overall combustion section of the turbine combustor is at a defined equivalence ratio.

Abstract: A multistaged lean prevaporizing premixing fuel injector apparatus is provided. The fuel injector may be utilized with a turbogenerator. Preheated combustion air from the turbogenerator's recuperator may be utilized by the fuel injector to prevaporize liquid fuel. The injector may provide for premixing of multiple fuel streams and include multiple stages with a flow distributor plate separating adjacent stages. The injector may include multiple stages, with a pilot tube located in a final stage splitting the fuel stream into a premixed pilot stream and a premixed final fuel and air mixture stream.

Abstract: A heating cooker includes: a top plate on which a cooking container to be heated is placed; an outer case as a main body having an upper surface on which the top plate is placed; a heater heating the cooking container; and a light emitting device disposed in the outer case, for displaying the heating state. The top plate includes: a glass substrate having a transparent light-transmitting low-expansion crystallized glass made mainly of Li2O—AL2O3—SiO2 and having ?-quartz solid solution, having a crystal size smaller than the wavelength of visible light; a design layer having a black-based color disposed on an undersurface of the glass substrate; a diffusion region disposed partially on an undersurface of the design layer, for diffusedly emitting light from the light emitting device; and a light-blocking layer disposed on the undersurface of the design layer other than the diffusion region, for blocking light from below.

Abstract: The invention relates to an oven for household use, wherein the controls provided on the front control panel are protected against high temperatures by a ventilation system. The latter comprises a cooling air channel supported by shape coupling with the panel where the cooling air inlet and outlet apertures are located.

Abstract: A cooking device comprises a frame including supporting parts to support a tray on which food is put; a partitioning plate to divide an inner space of the frame into a cooking chamber and an air flow chamber; a burner in the air flow chamber; and a fan in the air flow chamber, wherein the partitioning plate includes an air inlet to introduce air inside the cooking chamber into the air flow chamber, and air outlets to discharge air heated by the burner in the air flow chamber to the cooking chamber, and the air outlets include a first air outlet and a second air outlet located at a lower level than the first air outlet, at least a part of the second air outlet is located at a lower level than the tray while the tray is supported by a lowermost supporting part of the supporting parts.

Abstract: An apparatus and related method for operating a cooking appliance comprising a convection oven, a hot-air steamer, or a convection steamer, which includes a cooking chamber which can be closed by a door, a heating device, at least one steam injection device, at least one flow-generating device such as a blower, at least one temperature sensor, which detects the temperature in the cooking chamber, and an electronic appliance control unit with memory, in which cooking programs comprising the cooking sequences for specific food products are stored. Based on the time extending from a starting to a target temperature value, it is determined on the basis of the detected temperature curve in the cooking chamber whether and possibly to what extent it will take extra time to reach the target temperature. On this basis the appliance control unit calculates a cooking time extension, by which the cooking program step is extended.

Abstract: A method and system for providing an interactive learning heating schedule for a water boiler system, the method including the steps: (a) receiving an estimate of an amount of available hot water in a water boiler of the water boiler system; (b) receiving usage data for the water boiler system, the usage data including at least one expected usage pattern extrapolated from the usage data; and (c) generating a heating schedule for the water boiler, based on at least one expected usage pattern and the estimated amount of available hot water.

Abstract: The present invention relates to a control box and to an outdoor unit of an air conditioner comprising the same; the control box using a refrigerant cooling device and an air cooling device so as to radiate heat efficiently. The control box comprises: a case; a heat-radiating electronic component located inside the case; a refrigerant cooling device which is attached to one side of the case and makes contact with the electronic component so as to radiate heat to the outside; and an air cooling device which is attached to one side of the case and has a circulation fan for forcible circulating the air inside the case. Because the present invention is provided both with the refrigerant cooling device and the air cooling device, the electronic component inside the control box can radiate heat efficiently.

Abstract: An architectural heat and moisture exchanger. The exchanger defines an interior channel which is divided into a plurality of sub-channels by a membrane configured to allow passage of water vapor and to prevent substantial passage of air. In some embodiments, the exchanger includes an opaque housing configured to form a portion of a building enclosure, such as an exterior wall, an interior wall, a roof, a floor, or a foundation.

Abstract: A wireless actuator assembly for use in a building control system includes an actuated component such as a damper or a valve and an actuator that is configured to move the actuated component between a first position and a second position. The assembly includes a short range wireless communication module having a nominal communication range of less than 60 feet and an actuator controller that is operably coupled to the actuator and the short range wireless communication module. The actuator controller may be configured to receive one or more actuator commands from a portable handheld device via the short range wireless communication module and to send information to the portable handheld device via the short range wireless communication module.

Abstract: A system for controlling a damper, comprising an energy harvesting device is disclosed. A voltage conditioning and storage unit coupled to the energy harvesting device, the voltage conditioning and storage unit configured to apply overvoltage and undervoltage protection to a storage capacitor. A controller coupled to the voltage conditioning and storage unit, the voltage conditioning and storage unit configured to apply overvoltage protection to the controller.

Abstract: A wall module for use in a building control system includes a wall module controller and a first communications module operatively coupled to the wall module controller for establishing wired communication with a remote building controller, and for receiving instructions and/or data from the remote building controller and for sending instructions and/or data to the remote building controller via the established wired communication. The wall module includes a second communications module operatively coupled to the wall module controller for establishing short range wireless communication having a communication range of less than 60 feet with a portable handheld device, and for receiving instructions from the portable handheld device and for sending data to the portable handheld device via the establishing short range wireless communication.

Abstract: A system and associated methods of operation for regulating an environmental variable (such as ambient room temperature) within a target zone. The system includes a sensor system configured to monitor the target zone and measure a skin parameter (such as skin temperature and/or sweat) from an inhabitant occupying the target zone. A processor in operative communication with the sensor system receives the measured skin parameter and queries a storage medium to obtain a threshold setpoint relating to measured skin parameter. The processor compares the measured skin parameter to the threshold setpoint and generates an operation mode signal based on the comparison. An environmental control system receives the operation mode signal and determines whether and how to regulate an environmental variable within the target zone based on the signal.

Abstract: A system and associated methods of operation for regulating an environmental variable (such as ambient room temperature) within a target zone. The system includes an occupancy sensor configured to monitor the target zone and determine a number of inhabitants present within the zone. The occupancy sensor generates an occupancy signal communicating the number of detected inhabitants to an environmental control system. Upon receiving the occupancy signal, the environmental control system regulates an environmental variable within the zone based on the number of inhabitants present in the zone.

Abstract: A system and associated methods of operation for regulating an environmental variable (such as ambient room temperature) within a target zone. The system includes a sensor system configured to monitor the target zone, detect one or more inhabitants present within the zone, and identify an alpha person from the one or more inhabitants. Once the alpha person is identified, a measurement sensor measures a skin parameter from the identified alpha person and generates a sensor signal communicating the measured skin parameter to an environmental control system. Upon receiving the sensor signal, the environmental control system regulates an environmental variable within the zone based on the measured skin parameter from the alpha person.

Abstract: A method controls an operation of an air-conditioning system generating airflow in a conditioned environment. The method updates a model of airflow dynamics connecting values of flow and temperature of air conditioned during the operation of the air-conditioning system. The model is updated interactively iteratively to reduce an error between values of the airflow determined according to the model and values of the airflow measured during the operation. Next, the method models the airflow using the updated model and controls the operation of the air-conditioning system using the model.

Abstract: A method determines values of the airflow measured in the conditioned environment during the operation of the air-conditioning system and selects, from a set of regimes predetermined for the conditioned environment, a regime of the airflow matching the measured values of the airflow. The method selects, from a set of models of the airflow predetermined for the conditioned environment, a model of airflow corresponding to the selected regime and models the airflow using the selected model. The operation of the air-conditioning system is controlled using the modeled airflow.

Abstract: The present disclosure relates to methods and apparatuses for switching an operation state of a target device such as an air purifier. The method includes acquiring a state switching instruction based on an input from a micro-switch of the air moving device, switching a current state of the target device from an in-operation state to an out-of-operation state based on the state switching instruction, maintaining the target device in the out-of-operation state until acquiring a predetermined wakening instruction, acquiring a predetermined wakening instruction, and switching the air moving device from the out-of-operation state to the in-operation state responsive to the acquired predetermined wakening instruction.

Abstract: A temperature controlling apparatus includes a display configured to present an operating condition of the apparatus, and a communication module configured to communicate with at least one mobile device associated with the apparatus. The apparatus includes a processor in communication with a proximity detection module configured to determine a location of the at least one mobile device relative to the apparatus based on data received and initiate implementation of a home mode or an away mode of the apparatus in response to the determined location of the mobile device. The processor configured to initiate implementation of the away mode of the apparatus in response to a manual input received from a graphical user interface of the at least one mobile device.

Abstract: A method and a system for monitoring an abnormality at an air outlet of a dehumidifier. The method comprises: identifying whether there is a blockage abnormality at the air outlet of the dehumidifier; after a blockage abnormality has been identified, starting a high wind-level operation of the dehumidifier or controlling air deflectors of the dehumidifier to be reset; after the high wind-level operation has run for a set time period or after the air deflectors are reset, identifying whether the blockage abnormality has been eliminated; and after it has been identified that the blockage abnormality has not been eliminated, controlling the dehumidifier to stop running, and sending out a fault cue. The method and system disclosed can avoid influences on the operation, service life and reliability of the dehumidifier due to a long-term blockage at the air outlet of the dehumidifier.

Abstract: An indoor unit includes at least one air outlet including an inner air-passage wall and an outer air-passage wall located outwardly of the inner air-passage wall, and at least one outlet vane disposed in the air outlet. The outlet vane is rotated about a rotation axis and deflects air blown from the air outlet at an angle of rotation. While the indoor unit is in an operating state, the outer air-passage wall and the outlet vane define therebetween an outer air passage through which the blown air passes, and the inner air-passage wall and the outlet vane define therebetween an inner air passage through which the blown air passes. The outlet vane is rotatable to an upward position at which the outer air passage between the outer air-passage wall and the outlet vane is narrowed to have a higher air flow resistance than the inner air passage.

Abstract: Air conditioning element (1) of a woven or non-woven fabric comprises a wall provided with at least a first array of through holes (21) for distributing air, wherein the following relations apply to the through holes (21) constituting said first array: the twofold value of the square root of the quotient between the value of the inlet area (S) of a through hole (21) and the value ? is less than or equal to the value of the wall thickness of the element (1) in the region adjacent to said through hole (21) and the centre line (O1) of the through hole (21) intersects the inlet plane of said through hole (21) at an angle ?=60° through 89°, more preferably 80° through 88°, most preferably 83° through 87°.

Abstract: A hvac damper control is described. In an example, an apparatus comprises a manual actuator, wherein in a manual use of the manual actuator, the manual actuator is configured to open a hvac damper to an open position and close the damper to a closed position. The apparatus comprises an actuator coupled to a manual actuator, wherein the actuator is configured to open and close the hvac damper by being connected to the manual actuator. When the actuator is connected to propulsion, the actuator is configured to drive itself to the open position, wherein the actuator is configured to lock to the manual actuator. In other examples, a method, a hvac damper, and a hvac system are discussed along with the features of the apparatus.

Abstract: A water heater is provided which comprises a water storage tank made of enameled metal, an anode electrode (e.g. an anode rod) at least partly inside the water storage tank and a corrosion protection unit configured to impress current into the anode to provide a corrosion protection for the water storage tank. The corrosion protection unit further comprises a microprocessor configured to control the impressing of the current to the anode electrode during impression process cycles and to control the operation of the corrosion protection. The corrosion protection unit furthermore comprises a battery unit or an accumulator unit configured to supply energy to the microprocessor during grid power outages. The microprocessor is configured to activate the power saving mode during grid power outages during which an amount of impressed current and/or an impression process cycle is reduced.

Abstract: A remotely operated vehicle mountable hot water injection skid comprises skid frame, one or more floats, a power interface, one or more subsea power transformers, one or more electrical power interfaces, one or more data communication interfaces, one or more heater skid telemetry systems, a predetermined set of integration equipment, a water collection and heating container, a pumping and circulation system, and a hot seawater circulation flying lead or spray wand which allows delivery of heated fluid directly to a subsea asset using heated seawater delivered through a common hydraulic hot stab or directly to via a pressurized spraying wand.

Abstract: A method of concentrating directional radiant energy using reflective optics and receivers that convert that energy wherein the receivers are situated in the body of the reflector on risers parallel to the direction of radiant energy, each said riser bounded by at least one parabolic mirror lying closer and another lying farther from the energy source, where the focus or foci of said mirrors lie substantially in the direction faced by the receiver situated in said riser. The reflector geometries include ones in which the mirrors are parabolic cylinder sections and require only one-axis tracking to focus, and ones in which the mirrors are paraboloid sections and require two-axis tracking to focus sunlight.

Abstract: In a cooling circuit which comprises a refrigerant compressor incorporating a suction port and a pressure chamber incorporating a pressure port, a condenser which is arranged in the cooling circuit downstream of the pressure port and comprises a fluid collecting chamber in which a reservoir of refrigerant is formed, an evaporator which is located in the cooling circuit between the condenser and the suction port, a feed unit which is connected at one side to the refrigerant reservoir and to the pressure chamber at the other side and which serves for supplying refrigerant from the refrigerant reservoir to the pressure chamber which incorporates a pumping unit for the refrigerant, it is proposed that in order improve this cooling circuit in such a manner that it is realizable in an economically meaningful manner that the pumping unit comprise a pressure-tight closed housing which is provided with only one inlet and one outlet as access points and a pumping element which is movable for pumping the refrigerant be

Abstract: A system may be operable to circulate a working fluid between first and second heat exchangers. The system may include a suction line, a low-side compressor, a high-side compressor and a discharge line. The low-side and high-side compressors may both be in fluid communication with the suction and discharge lines.