156results about How to "Avoid efficiency loss" patented technology

In the embodiments described in the specification, a rim-driven propulsion pod arrangement has a cylindrical housing with a duct providing a flow path for water and a rotor assembly supported from a central shaft and containing a rotating blade row and driven by a rim drive permanent magnet motor recessed in the housing. An array of vanes downstream from the rotating blade row is arranged to straighten the flow of water emerging from the rotating blade row. Radial bearing members on the rotor have a hardness less than that of the shaft on which the rotor is supported and relatively soft protrusions are provided in the space between the rotor and the housing to limit excursion of the rotor. A thrust bearing has wedges arranged to form a water wedge between facing surfaces of the rotor and the rotor support during rotation of the rotor.

A photovoltaic glazing assembly including first and second substrates, at least one being formed of a light transmitting material. The assembly includes a photovoltaic coating over at least the central region of a surface of the first substrate or the second substrate. In some embodiments, a seal system encloses a gas space between the substrates and optionally has a thickness of between approximately 0.01 inch and approximately 0.1 inch. Certain embodiments provide a flexible and electrically non-conductive retention film over the photovoltaic coating. Additionally or alternatively, the assembly can have a peripheral seal system with relative dimensions in certain ranges. Advantageous manufacturing methods are also provided.

The invention proposes a synergic optimization method for a speed of an intelligent connected vehicle at an intersection without a signal lamp. The synergic optimization method comprises the steps ofselecting each first vehicle, which is not subjected to synergic optimization, in all paths having conflict points with other paths in an intersection range from a start moment of a current synergic optimization period, solving a mixed integer linear planning problem according to respective position and initial speed information, and obtaining an expected passing speed of each vehicle and a relative passing sequence among vehicles; and planning the acceleration process of each selected vehicle, and ensuring that the vehicle on a turn drives to the intersection again after the vehicle on a previous turn leaves the intersection. In each turn of optimization, a sub-set is dynamically extracted as an optimization object by the method, the vehicle relatively far away from the intersection is indirectly deleted, and the efficiency loss is prevented. By the method, it can be ensured that the scale of problem solving is limited to the number of controlled lanes, so that the calculation capability and the communication frequency requirement of a server are reduced, and the method is applicable to an intersection scene in and out of which the vehicle dynamically drives.

A DC / DC converter has a linear voltage regulator for reducing or eliminating the output ripple of the converter with a minimum loss of efficiency. The converter comprises a converter stage with a supply voltage input, a converted voltage output and a control input, a regulator stage having an input connected to the converted voltage output of the converter stage and an output connected to a load, and a tracking circuit with inputs for a voltage at the converted voltage output of the converter stage, a voltage at the output of the regulator stage and a load sense current, and an output connected to the control input of the converter stage. The tracking circuit controls the converter stage so as to increase the converted voltage with an increasing load sense current and vice versa. The output voltage of the converter is always just sufficient to eliminate the ripple without having to operate the regulator's pass transistor in its linear range.

For output current detection of a voltage regulator, the currents in a high-side transistor and a low-side transistor of the voltage regulator are sensed and summarized to a summed current to flow through a setting resistor. The voltage variation on the setting resistor is monitored to provide a feedback signal for feedback control in the voltage regulator. This detection scheme removes the current sensing resistor from the charging current path of the voltage regulator to prevent efficiency loss on it, and is much less sensitive to noise interference because greater voltage variation is available by using a greater setting resistor.

The invention discloses a main grid-free full-back contact solar cell module. The solar cell module comprises a plurality of series back contact small solar cell sheets, the back contact small solar cell sheet is formed after cutting the back contact solar cell sheet, a protruding end of a fine grid of one back contact small solar cell sheet is serially connected with the protruding end of the fine grid with opposite polarity of the adjacent back contact small solar sheet to manufacture a series cell string and then to manufacture the cell module; the cell module avoids the efficiency loss and process complexity caused by the main grid line setting of the full-back contact solar cell and saves the main grid line cost; since a plurality of cell units are cut, the current of each string of cell sheet group string is lowered, thereby reducing the influence of the fine grid line resistance loss; the consumption of the silver paste can be lowered, and the fill factor of the battery and the module are improved at the same time; based on two above points, the cell module can improve the efficiency of the full-back contact battery module, and can lower the process difficulty and manufacturing cost thereof.

In a centrifugal compressing apparatus, a height of a blade of an impeller is made to decrease gradually from a front edge thereof to a rear edge thereof, and a rate of change of the height of the blade is relatively large near the rear edge. The height of the blade can be made large at the rear edge side under the design restriction that an exit width of the rear edge of the blade is set to a predetermined design value. The ratio of the width of the clearance and the height of the blade is thereby made relatively large. As a result, the ratio of a flow path area occupied by a clearance flow to a flow path area occupied by a main flow is reduced and since pressure loss is thus made small, drop in the efficiency can be prevented.

The circuit of voltage multiplier with programmable output, which compares the feedback voltage of the output with a reference voltage, whether the pumping circuit functions to pump the output voltage or not is controlled by a clock generator so as to sustain the output voltage within a prescribed range, moreover, by using a voltage regulator to supply a stable output voltage to the load.

Aircraft air scoop icing protection systems and methods include an air duct having air inlet and outlet openings and a fairing which covers the air duct and defines an interior fairing space in which at least a forward portion of the air duct is positioned. The fairing has a forward end which surrounds the air inlet of the air duct. At least one tube is provided having an inlet end in communication with a heated air chamber associated with an airframe structure of the aircraft, and an outlet end in communication with the interior fairing space. Heated air in the heated chamber is directed through the tube to the interior fairing space so as to provide icing protection to the air duct. The air scoop icing protection systems may advantageously be employed so as to provide icing protection to air scoops associated with an aircraft engine nacelle using the residual heat from the nacelle's inlet lip primary bleed air system.

The invention provides a double reheat power station boiler with three rear flues and double rear baffles and capable of recycling jet flow flue gas, and relates to a double reheat boiler which is used in a thermal power station and combusts bituminous coal, low moisture brown coal or lean coal. When the boiler bears a high load or a medium load, a worker adjusts a flue gas adjusting baffle on a rear flue so as to control heat absorption distribution between a low temperature super heater and a single low temperature reheater and between the low temperature super heater and a double low temperature reheater, and adjusts a flue gas adjusting baffle on a middle flue so as to control heat absorption distribution between the single low temperature reheater and the double low temperature reheater, and therefore enables single and double reheat air temperature to reach rated value. When the boiler bears the medium load or a low load, an ejector heat primary air adjusting baffle is opened, and sucks flue gas from the rear of the double low temperature reheater, a mixture of smoke and air enters a hearth from the lower portion of a smoke deflecting corner, a proportion of radiation heat exchange amount and convection heat exchange amount in the hearth is changed, flue gas volume flow is increased, the opening degree of the ejector heat primary air adjusting baffle is controlled so as to maintain the double reheat air temperature at the rating value in a range from 40% BMCR (boiler maximum continuous rating) to 100% BMCR, and no water needs to be sprayed.

Presented are engine disconnect clutches, methods for making / using such clutch devices, and vehicles with an engine that is coupled to / decoupled from a transmission and motor via a disconnect clutch. A vehicle includes a transmission with an input shaft connected with a transmission gearing arrangement, and an output shaft connecting the gearing arrangement with the vehicle's wheels. A torque converter pump housing drivingly connects to the vehicle's traction motor. A turbine is mounted inside the pump housing in fluid communication with an impeller. A turbine shaft connects the turbine to the transmission's input shaft. A clutch hub of a disconnect clutch drivingly connects to the vehicle's engine and selectively attaches to the pump housing. The disconnect clutch selectively connects the engine to the motor and transmission by drawing oil from the transmission's oil sump, through a turbine shaft channel and a pump housing port, and into a clutch hub cavity.

A DC / DC converter has a linear voltage regulator for reducing or eliminating the output ripple of the converter with a minimum loss of efficiency. The converter comprises a converter stage with a supply voltage input, a converted voltage output and a control input, a regulator stage having an input connected to the converted voltage output of the converter stage and an output connected to a load, and a tracking circuit with inputs for a voltage at the converted voltage output of the converter stage, a voltage at the output of the regulator stage and a load sense current, and an output connected to the control input of the converter stage. The tracking circuit controls the converter stage so as to increase the converted voltage with an increasing load sense current and vice versa. The output voltage of the converter is always just sufficient to eliminate the ripple without having to operate the regulator's pass transistor in its linear range.

A gas turbine with a compressor area has a rotor shaft 2 to carry rotor blades 1 and a casing 4 to carry stator vanes 3, with the related rotor blades 1 and stator vanes 3 forming an axial clearance space 5 between one another, wherein, in the area of the axial clearance space 5, at least one wall of the rotor shaft 2 and / or of the casing 4 is provided with an arrangement of fins 6 which are inclined against the axial direction.

The present invention relates to a method of forwarding multicast message in network communication. In the method: first, configure forwarding match condition at the entry interface to the network device requiring forwarding multicast message, the forwarding match condition regulates forwarding rule for the multicast message; then, match the multicast message to be forwarded to network device through the interface with the forwarding match condition, and forward the multicast message according to the matching result. The present invention can configure the sending mode of messages according to requirement and can effectively avoid risks in security that may be caused by the broadcast mode for the multicast messages in the link layer as well as efficiency loss caused by receiving a great deal of invalid multicast messages, and the configuration is simple, and more convenient use and management is realized. In the present invention, forwarding multicast message through configuring multicast message forwarding rule greatly reduces the number of various multicast protocol messages generated in the multicast network and saves bandwidth resource of network.

The invention discloses an eastern-Junggar-coal fired double-reheat steam power plant boiler, and relates to a double-reheat steam power plant boiler which can be used by a thermal power station for a long time, and is safe, economical, and completely eastern-Junggar-coal fired. A tail flue is divided into a front flue, a middle flue and a rear flue by division walls, and the three flues all adopt structural supports; an ejector primary hot wind regulation baffle opens when the boiler is at middle or lower load, and the opening of the ejector primary hot wind regulation baffle is controlled to enable double reheat steam temperature to be kept at a rated value in the range of 40% to 100% BMCR; sequence and quantity of temperature-regulation air-flue ejectors along the width direction of the boiler are changed, so that thermal deviations of high-temperature heating surfaces along the width direction of the boiler can be compensated and reduced; a strong directional supersonic steam flow soot blower system is arranged on the ceiling, DCS controls continuous soot blowing time and interval time of each supersonic steam flow nozzle set, and thereby the thermal deviation of each high-temperature heating surface can be further compensated; the low thermal deviations effectively relieve the growing process of an oxide skin on the inner side of each high-temperature heating surface, so that operational reliability is significantly improved.

The invention discloses a semi-tower three-flue double-damper added jet flow flue gas recirculation secondary reheating power station boiler, and relates to a bituminous coal, low-moisture brown coal or lean coal burning secondary reheating boiler for a thermal power station. All high-temperature heating surfaces are horizontally arranged. When the boiler is at medium and high loads, heat-absorption distribution between a primary low-temperature reheater and a secondary low-temperature reheater is controlled by adjusting a flue gas adjusting damper for a middle flue, primary and secondary reheating air temperature reaches rated values, an ejector hot primary air adjusting damper is opened when the boiler is at low and medium loads, flue gas is sucked from the back of a front flue economizer, flue gas and air mixture enters a hearth from the upper portion of a secondary air separation air box, the proportion of radiation heat transfer to convection heat transfer in the hearth is changed, flue gas volume flow is increased, and the opening of the ejector hot primary air adjusting damper is controlled, so that the secondary reheating air temperature can be maintained at the rated values in the section of 40% to 100% BMCR (boiler maximum continuous rating) without spraying water.

The invention is a crystalline silicon solar battery adopting emission region on film silicon back, belonging to a new structured photovolt battery, and its key point is depositing a layer of silicon film on the back to form heterogeneous PN junction on an N-type monocrystalline silicon substrate so as to replace the homogenous PN junction on the right side of a battery, prepared by routine diffusion, where the deposited silicon film can noncrystalline, microstalline, or nanocrystalline film; the heterogenerous PN junction forming method can directly deposit a P-type silicon film on the N-type monocrystalline silicon, and can firstly deposit a layer of intrinsic silicon film on the N-type monocrystalline silicon and then deposit the P-type silicon film. Thus, the battery efficiency can reach above 20%.

Presented are engine-disconnect clutches with attendant control logic, methods for making / operating such disconnect clutches, and hybrid electric vehicles (HEV) equipped with an engine that is coupled to / decoupled from a transmission and electric motor via a disconnect clutch. A representative method for controlling an HEV powertrain includes receiving an HEV powertrain operation command, then determining a clutch mode of a multi-mode clutch device to execute the HEV powertrain operation. This multi-mode clutch device is operable in: a lock-lock mode, in which the clutch device transmits torque to and from the engine; a free-free mode, in which the clutch device disconnects the engine's output member from the transmission's input member, preventing torque transmission to and from the engine; a lock-free mode, in which the clutch device transmits torque from but not to the engine; and, a free-lock mode, in which the clutch device transmits torque to but not from the engine.

Shoe insert (1) comprised of numerous elements that provide shock absorption, elements that are made up of numerous cavities (2), each corresponding with pivots or shock absorbing (3) elements, which extend out from the bottom part of the insert; shock absorption elements (2, 3) configured in such way that, when compressed by the user's weight, they compress and absorb the shock that is produced by the stepping action, thus achieving a sensation of well being and comfort.

The invention relates to a method for accessing a shared memory. The method comprises the following steps of: calling an access interface by a visitor; checking an authority registry by an authority checking program to check an interface authority for the visitor; if checking is passed, calling the interface and returning results and ending; if the checking is not passed, returning errors and ending. The patent of the invention ensures the safety and consistency of a shared memory data access by setting the visitor authority.

The circuit of voltage multiplier with programmable output, which compares the feedback voltage of the output with a reference voltage, whether the pumping circuit functions to pump the output voltage or not is controlled by a clock generator so as to sustain the output voltage within a prescribed range, moreover, by using a voltage regulator to supply a stable output voltage to the load.

The invention discloses a grid line-free full-back contact solar cell module. The grid line-free full-back contact solar cell module comprises a plurality of back-contact solar small battery pieces which are connected in series, wherein the small battery pieces are obtained through cutting a back-contact solar battery piece; the back-contact solar battery piece comprises an n-type silicon substrate; a p+ doping area and an n+ doping area are arranged on the back of the n-type silicon substrate; a back passivation layer is arranged on the p+ doping area and the n+ doping area; a positive electrode contact part and a negative electrode contact part are arranged on the back passivation layer; soldering tin or conducting adhesive covers on the positive electrode contact parts and the negative electrode contact parts; when two adjacent small battery pieces are connected in series, a copper wire is arranged on the soldering tin or the conducting adhesive of the positive electrode contact part and a copper wire is arranged on the soldering tin or the conducting adhesive of the negative electrode contact part; and every two adjacent battery pieces are directly connected in series through the copper wires, or every two adjacent small battery pieces are connected in series through the copper wires or solder strips. The cell module not only ca enhance the reliability of the full-back contact battery module, but also can reduce the process difficulty and manufacturing cost of the full-back contact battery module.

The invention provides a mobile phone data collection controller and method with reconfigurable firmware. By using the online firmware burning and writing functions of a microcontroller chip, an interface of carrying out firmware burning and writing operations by a smart mobile phone is provided, the firmware storage Flash storage space of the data collector controller is divided into blocks, and multiple collection control firmwares can be installed in one microcontroller. The collection control firmware corresponding to the microcontroller is started by the mobile phone. When the microcontroller is not equipped with a corresponding collection control firmware, the mobile phone automatically searches and downloads the corresponding collection control firmware from the Internet, and the collection control firmware is installed to the idel block area of the data collection controller. The new burning and writing of the data collection controller collection control firmware in replacing a mobile phone measurement function can be avoided, and the efficiency loss brought by the complex and large design of a firmware program can be avoided.

In a centrifugal compressing apparatus, a height of a blade of an impeller is made to decrease gradually from a front edge thereof to a rear edge thereof, and a rate of change of the height of the blade is relatively large near the rear edge. The height of the blade can be made large at the rear edge side under the design restriction that an exit width of the rear edge of the blade is set to a predetermined design value. The ratio of the width of the clearance and the height of the blade is thereby made relatively large. As a result, the ratio of a flow path area occupied by a clearance flow to a flow path area occupied by a main flow is reduced. Since the pressure loss is thus made small, a drop in the efficiency can be prevented.

The invention provides an apron thunder and lightning security protection system and method. The apron thunder and lightning security protection system comprises an information collection module, an information processing module, a thunder and lightning early warning module and an information release module which mutually communicate, wherein the information collection module is used for collecting atmospheric electric field intensity data information and thunder and lightning positioning data information of a target apron; the information processing module is used for obtaining a first thunder and lightning prediction result according to the atmospheric electric field intensity data information, the thunder and lightning positioning data information and a preset graded early warning model; the thunder and lightning early warning model is used for outputting the first thunder and lightning prediction result, displaying a thunderstorm cloud cluster data set and auxiliary data corresponding to the first thunder and lightning prediction result, judging whether to generate a thunder and lightning early warning instruction or not according to the first thunder and lightning prediction result, the thunderstorm cloud cluster data set and the auxiliary data, and if so, sending the thunder and lightning early warning instruction to the information release module; and the information release module is used for releasing the thunder and lightning early warning instruction. The apron thunder and lightning security protection system can perform accurate and reliable thunder and lightning security protection on the apron.