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34 results about "Energy system design" patented technology
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Distributed energy system design method
ActiveCN103093017AImprove energy efficiencyGood price performanceSpecial data processing applicationsDevice typeTime-sharing
The invention discloses a distributed energy system design method which includes the steps: acquiring annual energy consumption time-sharing load information of a distributed energy system; acquiring available energy types and resource quantity of the distributed energy system; and performing equipment selection optimization calculation based on the annual energy consumption time-sharing load information, the available energy types and the resource quantity to obtain equipment types and the power of the distributed energy system. In the design method, the distributed energy system is selected by an optimization algorithm according to annual hourly load conditions and resource availability, the problem of too large selection scale of the energy system is solved, equipment selection is decreased, and accordingly, investment for the system is reduced.
Owner:廊坊新奥泛能网络科技服务有限公司
Impact-resistance optimization design method of multilevel energy absorption of railroad train
InactiveCN107657112AAccurate response informationGood forecastGeometric CADDesign optimisation/simulationReduced modelDynamic models
The invention discloses an impact-resistance optimization design method of multilevel energy absorption of a railroad train. A one-dimensional longitudinal flexible dynamic model which can accuratelyreflects critical responses of the railroad train in a crash process is established, and mainly consists of a coupler contact end part unit, a rigid connection unit, a coupler spring element and a train body rod element. Main technology of the method includes longitudinal load-deformation feature extraction of a single-section train body, global optimization method-based reverse calculation of mechanical properties of stiffness and damping parameters of the simplified nonlinear train body rod element, establishment of a one-dimensional longitudinal flexible dynamic model of a whole-array formation and train energy absorption system parameter optimization process building. The method increases an accuracy rate of the one-dimensional simplified model on predicting train formation dynamic-response information, also greatly saves single-analysis machine time, solves the problem that synchronous optimization of energy absorption parameters of whole-formation trains is always limited by too-long consumed single-analysis time in the past, and can be used for crash energy system design and parameter optimization of a train design stage.
Owner:CHINA RAILWAYS CORPORATION
Calculating method for determining cooling and heating load of building in hot-summer and cold-winter zone by utilizing pivot element decoupling method
ActiveCN104866702ASimple processLarge heating and cooling loadSpecial data processing applicationsResting timeRest time
The invention discloses a calculating method for determining cooling and heating load of a building in a hot-summer and cold-winter zone by utilizing a pivot element decoupling method. Factors influencing the cooling and heating load of the building are divided into two main types: the self attribute parameter and the operation attribute parameter of the building. The calculation is conducted by the following steps: according to the indoor comprehensive heat dissipation power, calculating the benchmark of the cooling and heating load; according to the work and rest time in the building, calculating the radiation coefficient and the temperature difference coefficient; according to the orientation, the window-wall ratio, the external wall heat resistance and the window heat resistance of the building, calculating the correction factors of the orientation, the window-wall ratio, the external wall heat resistance and the window heat resistance in sequence; according to the coupling influence of the self attribute parameter and the operation attribute parameter, calculating the coupling influence factor; finally calculating the average cold and hot power of unit area of the building in summer (winter) and the cooling (heating) capacity in various time periods of a typical day. The calculating method can meet the precision requirements of engineering application, quickly and economically calculate the cooling and heating load of the typical building in the hot-summer and cold-winter zone, guide the distributed energy system design, and provide reference for system operation and optimization.
Owner:SOUTHEAST UNIV
Comprehensive energy efficiency optimum-oriented distributed cooling heating and power mixed energy system design method
ActiveCN108052722AReasonable designDesign optimisation/simulationSpecial data processing applicationsElectricityEnergy system design
The invention discloses a comprehensive energy efficiency optimum-oriented distributed cooling heating and power mixed energy system design method. The method is characterized by comprising the following steps of 1, building a universal bus model of a distributed cooling heating and power mixed energy system; 2, defining a comprehensive energy efficiency index of the distributed cooling heating and power mixed energy system; 3, building a comprehensive energy efficiency optimum-oriented distributed cooling heating and power mixed energy system dual-layer optimization design model; and 4, performing solving by utilizing the comprehensive energy efficiency optimum-oriented distributed cooling heating and power mixed energy system dual-layer optimization design model. The method is reasonablein design; and by building the universal bus model of the distributed cooling heating and power mixed energy system, defining the comprehensive energy efficiency index and building the optimization model, finally a comprehensive energy efficiency optimum-oriented distributed cooling heating and power mixed energy optimization method is realized.
Owner:SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
Data correction method of high-altitude propeller wind tunnel test for influence of Reynolds number
The invention provides a data correction method of a high-altitude propeller wind tunnel test for influence of Reynolds number. The data correction method comprises the following steps: according to the similarity criterion of an advance ratio and a tip Mach number, experimental parameters of the high-altitude propeller scale model wind tunnel test are determined; the wind tunnel test of the propeller scale model is carried out; a tension coefficient experimental value C<T,exp> and a power coefficient experimental value C<P,exp> are measured; the tension coefficient experimental value and thepower coefficient experimental value are corrected; and a corrected propeller propulsion efficiency is calculated according to a propeller propulsion efficiency formula. The invention takes into account the difference between the Reynolds number experimental value under the condition of the equal advance ratio and the equal tip Mach number and the Reynolds number under the real working condition of the high-altitude propeller; more accurate aerodynamic performance experimental data such as the high-altitude propeller tension coefficient, the power coefficient and the propulsion efficiency is obtained by using the proposed correction method; so reliable basic data is provided for designing a propulsion system and an energy system of a high-altitude low-dynamic aircraft.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Gas inlet volute and combustion gas turbine
InactiveCN107725195AReduced inlet airflow angleSimple structureGas turbine plantsStatorsPower capabilityCombustion chamber
The invention relates to the field of energy system design and discloses a gas inlet volute and a combustion gas turbine. The gas inlet volute is used for connecting a combustion chamber and a high-pressure guide and comprises a shrinkage tube, an annular tube and at least one group of guide blades, wherein the shrinkage tube is connected with the gas outlet of the combustion chamber; in a direction opposite to the combustion chamber, the area of the cross section of the shrinkage tube is gradually reduced; the annular tube is communicated with the gas outlet of the shrinkage tube and the high-pressure guide; the gas flow direction of the annular tube is perpendicular to that of the shrinkage tube; at least one group of the guide blades are uniformly arranged inside the annular tube in thecircumferential direction of the annular tube to form a gas guide channel; when passing through the gas guide channel, a high-temperature high-pressure combustion gas is deviated to a direction approximate to the axial direction from a relatively large outlet gas flow angle under the action of the guide blades, then a relatively small inlet gas flow angle of the high-pressure guide is formed, thepower action and the efficiency that a turbine is pushed by the high-temperature high-pressure combustion gas are ensured, a relatively small gas flow angle of a gas fed into the guide-pressure guideis formed, and in addition, the gas inlet volute is compact in structure and convenient to manufacture.
Owner:新奥能源动力科技(上海)有限公司
Modelica model-based spacecraft energy system model construction method
InactiveCN107315866AReduce difficultyImprove reusabilityGeometric CADDesign optimisation/simulationModelicaReusability
The invention discloses a Modelica model-based spacecraft energy system model construction method. The method comprises the following steps of: 1, carrying out design composition on an energy system model; 2, constructing a Modelica language-based energy system model library; and 3, demarcating and verifying the Modelica language-based energy system model library. The spacecraft energy system model construction method is oriented to objects and equations and has favorable reusability and hierarchy; and through applying the method, the difficulty of model development can be greatly reduced, the reusability of models can be remarkably improved, the energy system design period can be effectively shortened, the dynamic design ability can be enhanced and the design efficiency can be improved.
Owner:苏州同元软控信息技术有限公司
A method for design of photoelectric micro power system based on model analysis
InactiveCN101552486AShort cycleSimple designElectrical storage systemBatteries circuit arrangementsPower sensorSystem design process
The present invention discloses a method for design of photoelectric micro power system based on model analysis and pertains to the technical field of photoelectricity. According to the node composition and functional requirements of the integrated photoelectric micro power sensor, the present invention divides the sensor into four parts: energy conversion subsystem, energy storage subsystem, energy management subsystem and sensor nodes. The energy parameters of these four parts are analyzed. According to the power supply method to sensor nodes from the photoelectric micro power system, a design model for the relations between different energy parameters of the photoelectric micro power system is established. According to the functional requirements of the photoelectric micro power and the environmental features of the areas where micro power is used, system design parameters are determined. From system design parameters and micro power design model, the area of photovoltaic cell and the cell circuit of micro power system are determined, thus completing the design of integrated sensor photoelectric micro power system. The present invention uses a design model to greatly simplify system design process and establish a universal design method for the design of photoelectric micro power system.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Spacecraft energy system design method
PendingCN114510785ARapid designAccurate assessmentGeometric CADDesign optimisation/simulationEnergy balancingEnergy system design
The invention relates to a spacecraft energy system design method. The method comprises the following steps: S1, constructing a general spacecraft power supply and distribution system model; s2, inputting prior on-orbit data into a recurrent neural network (RNN) for data generalization, and realizing refined mining of prior empirical data; s3, constructing an actual spacecraft power supply and distribution system model; s4, in a ground design stage, classifying energy balance according to a spacecraft task sequence, establishing sub-samples, and generating a ground test case; s5, correcting the modelable state of the actual spacecraft power supply and distribution system model by adopting a data mining method according to the actual ground test data of the spacecraft, and performing data fitting on the non-modeled state of the actual spacecraft power supply and distribution system model; and S6, in an in-orbit operation stage, performing in-orbit high-precision correction on the actual spacecraft power supply and distribution system model by adopting a data mining method according to the in-orbit measured data. The method has the beneficial effects that the spacecraft energy subsystem is designed according to the operating environment, the task sequence, the working state of each single machine and the previous on-orbit data.
Owner:INNOVATION ACAD FOR MICROSATELLITES OF CAS +1
Rural residential building low-carbon energy system optimization method based on multi-objective optimization
PendingCN113610269AImprove rationalityGeometric CADForecastingEnergy system optimizationInternal energy
The invention discloses a rural residential building low-carbon energy system optimization method based on multi-objective optimization, and the method comprises the steps: building a rural building structure thermophysical property parameter and an internal energy system operation mode according to a rural typical building structure; based on the building structure parameters and the system internal energy operation mode, building energy requirements are obtained and comprise the air conditioner cold / heat load requirement, the electric load and the hot water load; establishing a mathematical programming model with the guidance of optimization design of a building energy system constructed by multi-objective optimization, and realizing a global optimal solution of the model through an optimization algorithm. Through the optimization method, a low-carbon sustainable energy system can be provided for rural residence construction, and compared with a traditional energy system design, the method gives consideration to economic benefits and low-carbon requirements, and has high application value.
Owner:TIANJIN UNIV
Combination on-orbit energy management method based on energy balance analysis
InactiveCN108346005AGeneration Capacity ForecastAccurate analysisGeometric CADResourcesEnergy balancingEnergy based
The invention relates to a combination on-orbit energy management method based on energy balance analysis. The method comprises the steps that S1. a spacecraft model is constructed and connected as acombination model, and the flight scheme of the combination model is acquired; S2. a power generation capacity curve is acquired according to the combination model and the flight scheme, and a load working curve is acquired according to the flight scheme; and S3. the energy balance state of the combination model is assessed based on the power generation capacity curve and the load working curve. The volt-ampere characteristics of all the battery strings on the sailboard can be accurately calculated through the algorithm of introducing the combination model and the flight scheme to be combinedto acquire the shielding shape of the sailboard in the flight process to obtain the power generation capacity, and the energy balance situation can be accurately analyzed through combination of the load demand and the energy system design so that the power generation capacity error caused by conventional average shielding or the shielding rate can be eliminated, and the power generation capacity of the sailboard can be accurately predicted.
Owner:BEIJING SPACE TECH RES & TEST CENT
Method for designing electric pump hydraulic energy system in cabin
InactiveCN102650301AIncrease output powerEasy to monitorServomotorsEnergy system designAlternating current
The invention belongs to the technical field of a hydraulic energy system design, and particularly relates to the field of the design of an electric pump hydraulic system in an airplane. Through installing and connecting the relevant accessories of the electric pump hydraulic system on an equipment bracket of a special hydraulic system in a cabin, the method builds the electric pump hydraulic system which can work for a long time. The electric pump hydraulic system uses alternating current which is produced on the airplane, and adopts three electric pumps as energy generation devices, two electric pumps normally work at the same time, the third electric pump is started when fault occurs, so the power requirement is ensured, and the working reliability of the system is also improved; under the premise of not changing the design and installation modes of the whole original hydraulic energy system, the method can improve the power output of the whole hydraulic system through adding a set of electric pump hydraulic energy system in the cabin; and moreover, the electric pump hydraulic energy system can reliably work for a long time, so the defect that only the electric pumps can be used as emergency energy in the past is overcome.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Comprehensive optimization design method for building group energy system
InactiveCN106022520ATake advantage ofReduce consumptionForecastingEnergy transferEnergy system design
The invention relates to a comprehensive optimization design method for a building group energy system, and the method is characterized in that the method comprises the following steps: 1), obtaining energy resources with utilization potential from all energy carriers according to building groups and all peripheral energy carriers thereof, obtaining all potential energy transfer and conversion paths among the building groups and all energy resources with utilization potential, and drawing the energy carrier and building energy flow network maps according to the above; 2), building an energy conversion and transfer energy flow network optimization model, carrying out the solving through a comprehensive optimization algorithm, and obtaining an optimal energy transfer and conversion path from all potential energy transfer and conversion paths according to a solving problem; 3), determining a building group energy system design scheme according to the optimal energy transfer and conversion path among the building groups and the energy resources with the potential. Compared with the prior art, the method is full in consideration and utilization, and is high in energy utilization rate.
Owner:TONGJI UNIV
Compound energy simulation system and management strategy
PendingCN108009387AImprove R&D efficiencySimulator controlTechnology managementEnergy harvesterEnergy system design
The invention discloses a multi-energy compound energy simulation system and an energy system management strategy. Output characteristic curve simulation of each energy collector simulation sub-moduleis realized, and the system is used for evaluating energy output capacity of each energy collector simulation sub-module. Performance of each energy collector can be optimized by taking the system asa reference in compound energy system design. In addition, transient simulation of working state of the whole system is realized and conducted according to a specified energy management strategy, andstability and load capacity of the whole system during running can be evaluated. Further, optimization of the management strategy and performance cooperation of devices in the compound energy systemis realized, and development efficiency of the compound energy system can be improved.
Owner:INFORMATION SCI RES INST OF CETC
Distributed energy resource system design and operation
An energy management system for enhancing design and operation of a distributed energy resource system includes a two-level design system and a hierarchical optimization-based control system. The two-level design system includes a top-level designer configured to coordinate decentralized bottom-level designers for individual energy resources to seek a global target for the designed distributed energy resource system that satisfies the energy demand of a target deployment location within a confidence level, and multiple bottom-level designers configured to enhance detailed designs of local energy sub-systems. The hierarchical optimization-based control system include a primary controller configured to determine a long-term operational schedule based on long-term constraints and future events at a first level, one or more secondary controllers configured to control daily orchestrations of the distributed energy resource system during operation at a second level, and multiple tertiary controllers and aggregators configured to rapidly adjust various hardware at a third level.
Owner:SCHLUMBERGER TECH CORP
Aircraft energy demand refined analysis method and equipment
PendingCN110717221AEasy to operateThe analysis result is accurateGeometric CADDesign optimisation/simulationSquare waveformUser input
The invention belongs to the field of energy system design, and particularly relates to an aircraft energy demand refined analysis method and equipment. The method comprises the steps of acquiring user input parameters, and establishing a database according to the user input parameters; 2, constructing a subsystem model according to the database, and calculating a subsystem-level total power demand; 3, combining the subsystem models to form a system model, and calculating a system-level total power demand; and 4, operating the system model to obtain a simulation result, and generating a written report. The dynamic power characteristics of the load equipment can be reflected in a final analysis result graph, and the analysis result is more accurate and reliable; the simulation model is simple and convenient to operate, repeatable and high in iteration; the simulation model can count required power in a short time and draw a system-level power requirement curve, a system-level total power requirement curve and a power requirement maximum value square wave curve comparison graph of each single-class energy requirement type, so that the analysis time is saved, and the efficiency is improved.
Owner:SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
Method and system for obtaining design scheme of collaboratively optimized integrated energy system
PendingUS20210334912A1Low costEmission reductionPower network operation systems integrationForecastingSystems designIntegrated energy system
A method and system for obtaining a design scheme of a collaboratively optimized integrated energy system which resolves a problem of independent optimization failure caused by multi-device and multi-condition, structure complexity and diversity, and strong coupling of multi-energy flow operation. The method includes: determining types and a quantity of candidate devices, and taking a total quantity as a system scale during optimization; determining a quantity and types of variables using a unified model representing the integrated energy system as a chain structure; performing simulation by using a chain operating mode to obtain operating data, and solving variables to obtain a ranking result of the devices in the chain structure, by using a structure order, installed capacity, and control parameters of the devices as variables, and by using primary energy consumption, energy supply costs, and carbon emission as objectives; and obtaining a system design result according to the solving result.
Owner:SHANDONG UNIV
Acquisition method and system for collaborative optimization comprehensive energy system design scheme
ActiveCN111401665AAvoid incongruityReduce energy consumptionPower network operation systems integrationForecastingSystems designIntegrated energy system
The invention discloses a collaborative optimization comprehensive energy system design scheme obtaining method and system, and the method comprises the steps: determining the types and number of alternative equipment, and taking the total amount as the number of equipment during optimization; according to the number and the type of the equipment, determining the number and the type of variables including an equipment sequence, equipment capacity and operation parameters by using a unified model; based on the unified model of the equipment, expressing the structure of the comprehensive energysystem as a chain structure; performing simulating in a chain operation mode of a chain structure to obtain operation data, and solving variables to obtain a sorting result of equipment in the chain structure by taking a structure sequence, installed capacity and control parameters of the equipment as the variables and taking primary energy consumption, energy supply cost and carbon emission as targets; and obtaining a system design result according to the solving result. The invention discloses an integrated design method, and aims to fundamentally solve the problem of independent optimization failure caused by multi-equipment multi-working-condition, complex and variable structure and multi-energy-flow operation strong coupling.
Owner:SHANDONG UNIV
Natural gas distributed energy region user cooling, heating and power load prediction method and system
According to the natural gas distributed energy region user cooling, heating and power load prediction method and system provided by the invention, on the basis of the climate characteristics of the target region and various urban functional buildings, the hourly cooling, heating and power load of the standard building model of each region is obtained through simulation calculation, so that in thenatural gas distributed energy system design and planning stage, according to the proportion of standard buildings in regional users, hourly cooling, heating and power load characteristics of the regional users are effectively predicted, accurate and reliable regional user load prediction data can be provided in the design and planning stage of the natural gas distributed energy system, and on the basis, an improved configuration scheme and an optimized operation strategy of the energy system are studied; and the advantages of high efficiency, economy, environmental protection and reliabilityof the distributed energy system are fully achieved.
Owner:XIAN THERMAL POWER RES INST CO LTD
Solar rotor unmanned aerial vehicle design method based on self-adjusting search pigeon flock intelligence
PendingCN114398721AImprove reliabilityImprove tracking performanceGeometric CADSpecial data processing applicationsFinite-state machineControl engineering
The invention discloses a solar rotor unmanned aerial vehicle design method based on self-adjusting search pigeon flock intelligence. The method comprises the steps that 1, solar array modeling is conducted; 2, modeling the rotor unmanned aerial vehicle and a power system; 3, designing an MPPT controller based on a self-adjusting search pigeon inspired optimization algorithm; 4, designing an energy management strategy based on a finite-state machine; 5, optimizing the design of the solar rotor energy system; and step 6, flight control system parameter optimization based on a self-adjusting search pigeon inspired optimization algorithm. The invention provides a complete and normative solar rotor unmanned aerial vehicle design method and a process framework. A self-adjusting search pigeon inspired optimization algorithm is designed and applied to design of an MPPT controller, the tracking capability of the maximum power point of a solar array is improved, a cascade PID flight control system is decomposed into a plurality of channels according to the characteristics of the cascade PID flight control system, the self-adjusting search pigeon inspired optimization algorithm is adopted in a layered mode for optimization, the optimization problem is greatly simplified, and the maximum power point tracking capability of the solar array is improved. And the reliability of design results is improved.
Owner:BEIHANG UNIV
Correction method of high-altitude propeller wind tunnel test data for the influence of Reynolds number
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Integrated hydraulic oil tank
ActiveCN113685378AOvercome or mitigate technical deficienciesPump assembliesFluid-pressure actuator componentsEngineeringEnergy system design
The invention belongs to the technical field of airplane local hydraulic energy system design, and particularly relates to an integrated hydraulic oil tank. The integrated hydraulic oil tank comprises a barrel, a piston, a gas-phase end plate, a corrugated pipe, an oil-phase end plate and a heat exchanger; the piston is arranged in the barrel and can axially slide along the barrel; the gas-phase end plate blocks one end of the barrel, and a gas cavity is formed between the gas-phase end plate and the piston; the corrugated pipe is arranged in the gas cavity, one end of the corrugated pipe is connected with the piston, the other end of the corrugated pipe is connected with the gas-phase end plate, and the corrugated pipe is filled with pressurized air; the oil-phase end plate blocks the other end of the barrel, and an oil cavity is formed between the oil-phase end plate and the piston; and the heat exchanger is arranged in the oil cavity and connected to the oil-phase end plate.
Owner:SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
Premixing device and micro gas turbine
InactiveCN107620982AImprove mixing uniformityImprove uniformityContinuous combustion chamberMicro gas turbineEnergy system design
The invention relates to the field of energy system design and discloses a premixing device and a micro gas turbine. The premixing device is used for mixing fuel and air, wherein the fuel comprises pilot-stage fuel and primary-stage fuel. The premixing device comprises a shell. The shell comprises a front plate, a rear plate and a plurality of rotational flow blades connected with the front plateand the rear plate. The multiple rotational flow blades are evenly arranged in the circumferential direction of the front plate to form an air inlet, and the center of the front plate is provided witha pilot-stage fuel inlet. A primary-stage fuel inlet is formed in the edge of the end face of the end, connected with the rotational flow blades, of the rear plate, and a mixed gas outlet is formed in the other end of the rear plate. The primary-stage fuel is sprayed in towards an upper plate, more distributed around the interior of the shell and less distributed in the middle of the shell, the pilot-stage fuel is sprayed in towards a lower plate, less distributed around the interior of the shell and more distributed in the middle of the shell, therefore, uniformity of mixing of the pilot-stage fuel, the primary-stage fuel and the air can be improved through the premixing device, the structure is simple, and operation is convenient.
Owner:新奥能源动力科技(上海)有限公司
Engine and solid oxide fuel cell combined power system
PendingCN113036178AMeet the requirements of low temperature (≤600℃)Good application effectFuel cell heat exchangeInternal combustion piston enginesFuel cellsLiquid fuel
The invention discloses an engine and solid oxide fuel cell combined power system, which relates to the field of design optimization of power mechanical systems and energy systems and comprises an SOFC liquid fuel supply device, an SOFC device and an engine, wherein the SOFC liquid fuel supply device comprises a liquid fuel source, a vaporization device, a first pressurized mixing device and a pre-reforming device; the liquid fuel source is introduced into the vaporization device, is subjected to a vaporization reaction by the vaporization device, is introduced into the first pressurized mixing device to be mixed with water vapor, is introduced into the pre-reforming device to be reformed, and is communicated to an anode of the SOFC device to be subjected to an oxidation reaction; compressed air is input into a cathode of the SOFC device for a reduction reaction; and tail gas of the engine provides heat needed by operation for the SOFC liquid fuel supply device and the SOFC device through a heat exchanger. The system can effectively utilize the tail gas waste heat of the engine to provide a temperature environment for the operation of the SOFC device.
Owner:JIANGSU UNIV
Temperature difference power generation control method and control device based on building outer wall
ActiveCN114337374AGuaranteed uniformityGuaranteed continuityBatteries circuit arrangementsForecastingThermodynamicsNew energy
The invention relates to a building outer wall thermoelectric power generation control method and device based on solar radiation daily variation, belongs to the field of building new energy and energy conservation, and solves the problems that in the prior art, a building outer envelope structure thermoelectric power generation technology purely utilizes indoor and outdoor temperature difference, the power generation efficiency is low, and the power generation amount is uneven. According to the application, a plurality of thermoelectric power generation units are arranged on the building outer wall, and through hourly solar radiation analysis of the building outer wall, the maximum average temperature difference between the thermoelectric power generation units in a shadow area and a direct radiation area of the building outer wall and the minimum lead length are taken as control targets; and the building outer wall shadow area thermoelectric power generation unit and the direct incidence area thermoelectric power generation unit are connected in series to form an optimized thermoelectric power generation unit group. Through the power generation control method and device, the building outer wall temperature difference power generation efficiency and the hourly stability of the power generation amount can be remarkably improved, the method and device can be widely applied to the building new energy field such as building outer wall power generation, and support is provided for urban distributed energy system design.
Owner:CHANGAN UNIV
Correction method of high-altitude propeller wind tunnel test data for the influence of tip Mach number
The invention provides a high-altitude propeller wind tunnel test data correction method aiming at the influence of a tip Mach number, which comprises the following steps of: determining test parameters of a wind tunnel test of a high-altitude propeller scaling model according to an advance ratio and a Reynolds number similarity criterion; performing the wind tunnel test on the propeller scaling model to obtain a tension coefficient test value C<T, exp> and a power coefficient test value C<p, exp>; and correcting the tension coefficient test value and the power coefficient test value, and calculating according to a propeller propulsion efficiency formula to obtain a corrected propeller propulsion efficiency. According to the high-altitude propeller wind tunnel test data correction method,the difference between a tip Mach number test value under the conditions of equal advance ratio and equal Reynolds number and a tip Mach number under the real working condition of a high-altitude propeller is considered, and the provided high-altitude propeller wind tunnel test data correction method is utilized to obtain accurate aerodynamic performance test data such as a tension coefficient, apower coefficient, a propulsion efficiency and the like of the high-altitude propeller, so that reliable basic data are provided for the design of a propulsion system and an energy system of a high-altitude low-dynamic aircraft.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
A method for design of photoelectric micro power system based on model analysis
InactiveCN101552486BSimple designShort cycleElectrical storage systemBatteries circuit arrangementsPower sensorSystem design process
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
A shock resistance optimization design method for multi-stage energy absorption of rail trains
InactiveCN107657112BAccurate response informationGood forecastGeometric CADDesign optimisation/simulationFeature extractionDynamic models
Owner:CHINA RAILWAYS CORPORATION
A Method for Calculating Building Loads in Hot Summer and Cold Winter Regions Using Principal Component Decoupling
ActiveCN104866702BSimple processLarge heating and cooling loadSpecial data processing applicationsCold seasonEngineering
Owner:SOUTHEAST UNIV
Energy power flight control integrated design method for solar unmanned aerial vehicle
InactiveCN113232836AReduce weightReduce protection redundancyAircraft controlWeight reductionMotor speedSoftware design
The invention discloses an energy power flight control integrated design method for a solar unmanned aerial vehicle, and the method comprises the steps: carrying out the integrated design of a power controller, an energy storage battery collector, a motor controller and a flight controller in the aspect of hardware design, forming an integrated controller for unified control, and carrying out the unified power supply through a distributor; in the aspect of software design, an algorithm adopts an integrated design, and a rotating speed protection instruction for guaranteeing the safety of a motor and a motor rotating speed instruction output by a flight controller are combined for algorithm design; in the aspect of energy design, an energy system is designed from the aspect of energy balance, the requirements of a power system and a flight control system are considered in the energy system, integrated design is formed, and balance between flight control and energy supply is optimized. The design method provided by the invention can reduce the weight of the aircraft, improve the overall reliability of the system and improve the flight safety.
Owner:UNIV OF SCI & TECH BEIJING
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