93results about How to "Improve energy conversion" patented technology

The invention relates to a gas turbine (10) for transforming thermal energy, for example from coal, biomass or the like, to mechanical work, comprising a compressor unit (11), a turbine unit (13, a combustion chamber (15) and a heat exchanger (14) with associated pipe system. The gas turbine (10) id configured in such way that the heat is supplied to the air flow between the compressor unit (11) and the turbine unit (13) by means of hot flue gas from the combustion chamber (15) and is brought into a compression chamber (12) arranged between the compressor unit (11) and the turbine unit (13).

An apparatus and method to efficiently convert erratic wind energy to a source of reliable standard AC electrical power by means of a complex tower-mounted windmill operatively engaged to power a pump. The pump in a sealed communication with a chamber evacuates air from the chamber to store the wind-generated energy as potential energy in the form of a pressure differential with ambient atmosphere. Regulated air inflow into the evacuated chamber is employed to drive a generator to produce electric power which is synchronized with the grid on demand.

Phononic metamaterials and methods for reducing thermal conductivity in at least partially crystalline base material are provided, such as for thermoelectric energy conversion. In one implementation, a method for reducing thermal conductivity through an at least partially crystalline base material is provided. In another implementation, a phononic metamaterial structure is provided. The phononic metamaterial structure in this implementation includes: an at least partially crystalline base material configured to allow a plurality of phonons to move to provide thermal conduction through the base material; and at least one disordered (e.g., amorphous) material coupled (e.g., as an inclusion or layer) to the at least partially crystalline base material. The at least one disordered material is configured to generate at least one vibration mode to interact with the plurality of phonons moving within the base material and slow group velocities of at least a portion of the interacting phonons and reduce thermal conductivity through the base material.

Nanophononic metamaterials and methods for reducing thermal conductivity in at least partially crystalline base material are provided, such as for thermoelectric energy conversion. In one implementation, a method for reducing thermal conductivity through an at least partially crystalline base material is provided. In another implementation, a nanophononic metamaterial structure is provided. The nanophononic metamaterial structure in this implementation includes: an at least partially crystalline base material configured to allow a plurality of phonons to move to provide thermal conduction through the base material; and at least one nanoscale locally resonant oscillator coupled to the at least partially crystalline base material. The at least one nanoscale locally resonant oscillator is configured to generate at least one vibration mode to interact with the plurality of phonons moving within the base material and slowing group velocities of at least a portion of the interacting phonons and reduce thermal conductivity through the base material.

A steam engine increases efficiency and prevents corrosion, abrasion, and the like in a part receiving steam pressure. A heater and a cooler are provided on one side of a U-shaped fluid container, and a piston for output is provided on its other side. The heater heats working fluid to vaporize the fluid. The expansion pressure of steam of the working fluid depresses a fluid level in a first vertical pipe. The liquid component of the working fluid flows from the first vertical pipe into a second vertical pipe, thereby applying pressure to the piston in an upward direction. Then, the liquid component of the working fluid functions as a liquid piston directly receiving the expansion pressure of the steam, so that it is possible to prevent the occurrence of corrosion, abrasion and the like in the part receiving steam pressure.

A power conversion apparatus and a controlling method thereof are disclosed. The power conversion apparatus is applied with a power generation apparatus, which outputs a first signal. The power conversion apparatus includes a conversion-sensing circuit, a control signal generating circuit and a switching circuit. The conversion-sensing circuit converts the first signal into a second signal, and senses at least a voltage waveform change of the second signal to generate a time interval. The control signal generating circuit is electrically connected with the conversion-sensing circuit and outputs a control signal according to the time interval. The switching circuit is electrically connected with the power generation apparatus and the control signal generating circuit, and has a plurality switching elements. The switching circuit receives the first signal and conducts one of the switching elements according to the control signal so as to convert the first signal and output an output signal.

A nitrogen-oxygen compound luminescent material and its production are disclosed. The material consists of A and B, A is selected from any one of alkali metal alkaline earths and rare earth metal; B is selected from any one of III-V family element containing Si; 0<=x<=1.0; 1.0<=y<=2.0; 1.0<=z<=2.0; 1.0<=w<=3.0. It can give out blue and green, green or yellow light with wavelength 470-570nm while it is excited by ultraviolet, near-ultraviolet or blue light. It's efficient, stable and simple, has wide wavelength range and no environmental pollution. It can be used for ultraviolet, near-ultraviolet or blue-light LED, other luminescent materials and white-light LED light source.

The invention relates to a nitrogen oxides luminescent material and a preparation method and an application thereof, belongs to the semiconductor field. The chemical formula of the nitrogen oxides luminescent material is AxByOzN(2/3x+4/3y-2/3z):R, wherein A is one or more of Be, Mg, Ca, Sr, Ba, Zn, Li and Na, and B is one or more of Si, Ge, Zr, Ti, B, Al, Ga and In and contains at least Si. The luminescent material has stable chemical property and excellent luminescent performance, can be used as the blue/green-to-red nitrogen oxides luminescent material of white-light LED which can be excited by ultraviolet LED or blue light LED; the excitation wavelength is 300-500nm, the luminescent wavelength is 470-700nm, and the luminescent material can be used to prepare white light LED lighting sources or display sources by combining the blue light LED or ultraviolet or near-ultraviolet LED.

The invention discloses a method for enhancing damping capacity of rubber by adding neodymium-iron-boron magnetic powder, which comprises the following steps: 1) plasticizing 100 parts by mass of rubber on milling equipment, sequentially adding 1-50 parts by mass of reinforcing agent, 20-120 parts by mass of neodymium-iron-boron magnetic powder, 0.1-5 parts by mass of sulfur, 0.1-5 parts by mass of zinc oxide and 0.1-5 parts by mass of stearic acid, and milling for 5-20 minutes to obtain a mixture; 2) putting the mixture in a mold, applying a pressure of 5-50Pa onto the mold, and vulcanizing at 120-200 DEG C for 5-30 minutes to obtain vulcanized rubber; and 3) putting the vulcanized rubber in a 0.5-5T magnetic field to carry out magnetization for 1-60 seconds, thereby obtaining the high-damping neodymium-iron-boron magnetic rubber. The damping capacity of the rubber obtained by adding the neodymium-iron-boron magnetic powder can be maximally enhanced by more than 25% within a wide frequency range and a wide temperature range.

The present invention relates to oxy-nitride luminescent material and its manufactured illumination and display light source. The molecular formula of oxy-nitride luminescent material is A2B5-xOxN8-x to Euy, wherein, A is alkali metal, one or a plurality of alkaline-earth metal; B is one or a plurality of 3-5 family elements contains at least Si; 0 is less than or equal to x and x is less than or equal to 1; 0.005 is less than or equal to y, and y is less than or equal to 1.0. The luminescent material is motivated by motivation light sources such as ultraviolet ray, near ultraviolet ray or blue light as LED, the high light red color light with wave length at 600 to 680 nm can be motivated. The present invention also relates to the preparation method of the oxy-nitride luminescent material. The present invention of luminescent material can make novel white light LED light source cooperated with ultraviolet ray, near ultraviolet ray or blue light LED as well as other luminescent material such as yttrium aluminum garnet type luminescent material, or can make red LED light source matched with ultraviolet ray and near ultraviolet ray.

A class of materials has advantageous utility in electrocatalytic applications, e.g., fuel cells. The materials circumvent conventional Pt-based anode poisoning and the agglomeration/dissolution of supported catalysts during long-term operation by exploiting the unique physical and chemical properties of bulk metallic glass to create nanowires for electrocatalytic applications, e.g., fuel cell and battery applications. These amorphous metals can achieve unusual geometries and shapes along multiple length scales. The absence of crystallites, grain boundaries and dislocations in the amorphous structure of bulk metallic glasses results in a homogeneous and isotropic material down to the atomic scale, which displays very high strength, hardness, elastic strain limit and corrosion resistance. The melting temperatures of the disclosed bulk metallic glasses are much lower than the estimated melting temperatures based on interpolation of the alloy constituents making them attractive as highly malleable materials.

A wind turbine for converting wind into mechanical energy, includes a support and a vane rotatably connected to the support, the vane including a wind receptacle that can adopt a first configuration when the vane is in a position to travel in the direction of the wind, in which first configuration the receptacle has a first capacity to convert wind force into motion of the vane, and a second configuration when the vane is in a position to travel against the direction of the wind, in which second configuration the receptacle has a second capacity to convert wind force into motion of the vane, the second capacity being lower than the first capacity, wherein the turbine is provided with an arrangement that is operable to force the receptacle to adopt at least one of the configurations independent from the direction of the wind.

A cathodoluminescent light source comprising a field-emission cathode serving as a source of electrons, an anode having a specular light-reflecting surface, and an electron-excited phosphor applied to the specular light-reflecting anode surface. The cathode and anode are enclosed in an evacuated housing having a transparent surface, so as to let the electron-excited phosphor on the anode surface, be irradiated with an electron beam, and let the luminous flux resulting from the process of cathodoluminescence, to emerge.

A dental irrigation system is provided with a laser source for generating a laser beam and an optical delivery system for the laser beam. The laser beam wavelength ranges from 0.4 μm to 11.0 μm. The laser system operates in pulsed operation with pulse sets of 2 to 20 individual pulses of temporally limited pulse length. The pulse sets follow one another with temporal separation. The individual pulses follow one another with pulse repetition rate. The laser system generates at least one vapor bubble within the liquid irradiated with the laser beam. A single pulse causes the vapor bubble to oscillate between a maximal and a minimal volume with a bubble oscillation frequency. The pulse repetition rate within one pulse set is adjusted relative to the bubble oscillation frequency such that synchronization between delivery of the pulses and bubble oscillation is achieved.

An electric car is composed of car body, electric driver unit, and electric accumulator unit and control system. It features that said car body has a wind driven electric generator and several solar cell boards connected electrically with said electric accumulator unit.

The invention discloses a spring operating mechanism for a circuit breaker, relates to the field of high-voltage switches, and aims to provide a spring operating mechanism for the circuit breaker, which is short in brake separating and closing time, stable and reliable in mechanical property, low in energy loss and small in size. The spring operating mechanism for the circuit breaker provided by the invention comprises a first side plate and a second side plate; an energy storage system, a brake closing and brake closing control system and a brake separating and brake separating control system are integrated on the first side plate and the second side plate. The energy storage system comprises an energy storage shaft, an energy storage gear, an auxiliary cam, a first energy storage crank arm, a second energy storage crank arm, a motor, a chain and an energy storage spring component; the brake separating and brake separating control system comprises an output shaft; an output crank shaft, a special-shaped crank arm, a buffer arm and a central crank shaft are arranged on the output shaft in a penetrating manner in sequence; two brake separating springs are mounted on the central crank shaft; the brake closing and brake closing control system comprises an energy storage latch; the upper end of the energy storage latch and a brake closing limiting bearing are mounted in a matched manner; a brake closing limiting latch is in contact with the energy storage latch.

The present invention provides materials, devices, and methods for generation of electricity from solar power. In one aspect, the present invention includes a solar cell, including a first conductor, a doped silicon layer in electrical communication with the first conductor, a nanodiamond layer in contact with the doped silicon layer, a doped amorphous diamond layer in contact with the nanodiamond layer, and a second conductor in electrical communication with the doped amorphous diamond layer.

The invention provides a melastoma dodecandrum lour planting method, and particularly relates to the technical field of plant cultivation. The method adopts a mode for planting melastoma dodecandrum by using a seedling solution for rooting culture of cutting strips. Firstly, the cutting strips are placed and soaked in rooting water, cultivating and rooting are conducted with the seedling solution,field planting is conducted in a planting field, when water and fertilizer management is carried out, a vine enhancing agent and a fruit promoting agent are sprayed at the right time, the rooting rate of the cutting strips is over 98%, the total flavonoid content of active ingredients of a plant is above 35mg/g, which makes fruits have a heavy weight, enough sweetness and high yield, the shelf life of fresh fruits is prolonged to more than 20 days, so that the fresh fruits keep the original taste and freshness and do not easily rot, and the planting method is green, environmentally friendly,easy to operate, convenient to manage and suitable for scale and industrialization popularization.

The invention discloses a method for enhancing damping capacity of rubber by adding samarium-cobalt magnetic powder, which comprises the following steps: 1) plasticizing 100 parts by mass of rubber on milling equipment, sequentially adding 1-50 parts by mass of reinforcing agent, 20-120 parts by mass of samarium-cobalt magnetic powder, 0.1-5 parts by mass of sulfur, 0.1-5 parts by mass of zinc oxide and 0.1-5 parts by mass of stearic acid, and milling for 5-20 minutes to obtain a mixture; 2) putting the mixture in a mold, applying a pressure of 5-50Pa onto the mold, and vulcanizing at 120-200 DEG C for 5-30 minutes to obtain vulcanized rubber; and 3) putting the vulcanized rubber in a 0.5-5T magnetic field to carry out magnetization for 1-60 seconds, thereby obtaining the high-damping samarium-cobalt magnetic rubber. The damping capacity of the rubber obtained by adding the samarium-cobalt magnetic powder can be maximally enhanced by more than 25% within a wide frequency range and a wide temperature range.

Four blade VERTICAL AXIS WIND TURBINE is disclosed. Four equally radially spaced fixed troposkein shaped rotor blades nearly eliminates rotor torque ripple. Reduced rotor torque ripple allows thinner skin hollow cross section blades that are lighter and have higher frequency and lower stress natural vibrations. Improved single length blade extrusion has two integral mounting flanges at each of two root ends. One blade root flange is adjoined to the blade nose tip through a blade skin thickening gusset rail. One blade root flange is adjoined to the blade tail tip through a second blade skin thickening gusset rail. A third blade root flange forms a largely rectangular hollow between the two mounting flanges and the blade skin.

A separable rectangular cross section blade hub is made from two hollow rectangular L-shaped cross section extruded beams. These L-shaped beams are cut from a single extrusion.

The invention relates to a solid-state laser of human eye safety output. The laser comprises a LD pumping source 2, a gain medium and a plane-concave cavity. The LD pumping source 2 is side pumping. The gain medium is Er: glass crystal 3. The plane-concave cavity is formed by a reflecting mirror 1 and an output coupling mirror 5. The reflecting mirror 1 is a concave mirror. The output coupling mirror 5 is a plane mirror. The plane-concave cavity is located on an output light path of the side pumping. The gain medium is located in the plane-concave cavity. A passively q-switching switch is arranged in the plane-concave cavity. A Q switch 4 is located between the gain medium and the output coupling mirror 5. The structure is compact, miniaturization is realized and usage is simple and convenient. The laser is harmless to human eyes and usage is safe, and the laser can be applied in multiple fields. High peak power and single pulse base model output are realized. An atmospheric transmission distance is long so that long-distance range finding, monitoring and the like can be realized. An energy utilization rate is high.

A wave energy converter includes a buoyant body and an acceleration tube with a working cylinder and working piston movable therein, a mooring system, and at least one energy collecting device including a differential cylinder having an internal pump piston connected to the working piston via a piston rod. The differential cylinder includes a pumping chamber and an annular pumping chamber. When decreasing volume of the annular gap-shaped pumping chamber, the pump piston expels hydraulic fluid from the pumping chamber toward the pressure accumulator and draws hydraulic fluid from the fluid tank into the substantially cylindrical pumping chamber. During a working stroke causing a decrease in volume of the substantially cylindrical pumping chamber, the pump piston causes hydraulic fluid to bypass the pump piston through a fluid connection from the substantially cylindrical pumping chamber into the annular gap-shaped pumping chamber and further in a direction toward the pressure accumulator.

A nano structure CdTe/CdS Photon Trapping Solar Cell (PTSC) comprising an ultra thin film stack construction of 2 layers, one each of Cadmium Sulfide and Cadmium Telluride, and wherein the bottom electrode is a reflecting sheet or plate that serves to reflect Photons unabsorbed by their pass through the material back through the layers of Cadmium Telluride and Cadmium Sulfide. The bottom metallic plate also serves as an electron conductor for allowing the photoelectric current to exit the device and perform useful work. The cell has a maximum efficiency of 40%.