139 results about "Specific energy consumption" patented technology

The invention discloses a real-time monitoring method for the energy consumption of a public building based on data mining, belonging to the technical field of building energy saving. The method disclosed by the invention comprises the following steps: S1. establishing a building energy consumption mode judgment tree; S2. collecting building energy consumption data in real time; and S3. judging whether the current building energy consumption data are energy consumption abnormal points or not, carrying out the mode matching on the current building energy consumption data and the building energy consumption mode judgment tree and judging whether the current building energy consumption data are isolated points or not. In the method disclosed by the invention, the specific energy consumption mode of the building is identified by carrying out the cluster analysis on the historical energy consumption data; the building energy consumption mode judgment tree is obtained by classifying the data; the mode matching is carried out on the energy consumption data which are dynamically collected in the real-time monitoring course for the energy consumption of the building; and the isolated point analysis is carried out on the energy consumption data and the historical data which have the same mode, thereby judging whether the current building energy consumption data are abnormal or not. The method disclosed by the invention has the characteristics of good real-time characteristic, generality and robustness.

A method for improving the energy efficiency of a pump system. The method includes measuring an instantaneous power consumption of the pump system, measuring an instantaneous fluid flow rate of the pump system, and determining an instantaneous specific energy consumption (SEC) of the pump system based on the instantaneous power consumption and the instantaneous fluid flow rate. The method then adjusts the speed of a pump in response to the determined SEC. The above steps may be performed a number of times to seek a reduced value of the instantaneous SEC of the pump system.

The present invention relates to processes for enhancing a refiner's production rate and/or reducing the specific energy consumption for a freeness target through the use of lubricant(s) or carrier(s)/frictionizer(s), respectively.

The invention discloses a super-hard abrasive grinding wheel with a head face having abrasives in a phyllotaxis arrangement, comprising a grinding wheel basal body. The working surface of the grinding wheel basal body is provided with a plurality of abrasive particles or abrasive particle groups fitting with the biological phyllotaxis theory. The plurality of abrasive particles or abrasive particle groups are fixed on the grinding wheel basal body through a metal bonding agent. According to the biological phyllotaxis theory, the plurality of abrasive particles or abrasive particle groups forma plurality of anticlockwise leaf column line grooves and a plurality of clockwise leaf column line grooves. By means of the invention, the arrangement of the abrasive particles or the abrasive particle groups on the working surface of the grinding wheel fits with the H.Vogel model of the phyllotaxis theory so as to realize the physiographic controllability of the working surface of the grinding wheel. Nickel or nickel-cobalt alloy is adopted to serve as the bonding agent so as to fixedly bond the abrasives. The grinding wheel is capable of controlling the cutting state of the abrasive particles in a grinding region, the cooling liquid distribution and the grinding temperature distribution, and achieving lowest grinding force and specific energy consumption, lowest grinding temperature and burn, lowest abrasion of the grinding wheel, optimal work-surface surface integrity, and the like. The comprehensive grinding performance of the head face grinding of the super-hard abrasive grinding wheel is improved.

The invention aims to seek optimal dual-motor power parameters by considering contradiction between power performance and economical efficiency, and improve the power performance and endurance of a pure electric vehicle by reasonably selecting the dual-motor power parameters, and discloses an energy consumption-oriented parameter optimization and matching method for a dual-motor power system of the pure electric vehicle. The parameter optimization and matching method comprises the following steps of performing preliminary parameter matching on a dual-motor torque and rotary speed coupling structure, which is researched previously and has four working modes, based on an NEDC working condition and the like; next, on the basis of comprehensive consideration of the power performance and the economical efficiency of the electric vehicle, establishing a dual-motor power system parameter optimization model which takes acceleration time in 100 kilometers and specific energy consumption as a target, takes motor power, rotary speed, and transmission ratio as optimization variables, and takes power performance as constraint; and finally, solving the optimization model by a crossed particle swarm optimization, and performing comparison and analysis on an optimization result.

The invention relates to a rock drilling arrangement and a method and program for controlling rock drilling on the basis of specific energy consumption. The specific energy of drilling is the quantity of energy used per a unit of length of the drilled hole. Not only the used impact energy, but also the energy used by at least one other sub-process is taken into account when determining the specific energy. Rotation energy is typically included, but feeding energy and flushing energy can also be considered. Drilling variables are adjusted so that the specific energy is of a predetermined size.

The invention relates to a disk cutter geological adaptability design method based on CAD/CAE and optimal design, which comprises the following steps of: collecting traditional disk cutter drawings to obtain different cutter ring structure types, and using cutter ring structure parameters including parameter radii, blade angles, blade width, transition arc radii, fit interference magnitude of a cutter ring and a cutter body, thickness of a sleeve between bearings and the like as design variables to establish a disk cutter CAD parameterized model base; selecting a typical stratum according to the different parameters of wall rock attributes, and establishing a mould satisfying geological adaptability and having different cutter specific energy consumption as an optimization objective; obtaining optimized disk cutter ring structure types and geometric parameter values through an SAGA algorithm; and obtaining the optimized fit interference magnitude of the cutter ring and the cutter body and the optimized thickness of the sleeve between the bearings through the obtained geometric modeling structure of the disk cutter ring by adopting a finite element analysis method. The invention improves the cutter adaptability for geology and provides a high efficiency platform for cutter design and manufacture.

The invention discloses a single screw extruder on the basis of double screw edge push conveying. A storage chamber (5) is semi-closed and has determined geometrical shape. A groove screw-edge propulsion surface (1), a groove screw-edge tailing edge surface (2), a screw screw-edge propulsion surface (3) and a screw screw-edge tailing edge surface (4) are surrounded into the storage chamber (5). When a screw rotates, under the push action of the groove screw-edge propulsion surface (1) and the screw screw-edge propulsion surface (3), the storage chamber (5) moves forwards along the direction of a machine barrel bushing groove (6) so as to push to convey materials in the storage chamber (5) forwards along the direction of the machine barrel bushing groove (6), thereby realizing material conveying under the push action of double screw edges of the groove screw-edge propulsion surface (1) and the screw screw-edge propulsion surface (3). The defects of rigorous requirement on polymer properties, difficulty in realizing stable extrusion of materials with high viscosity and low friction coefficient, poor upbuild voltage capacity of a solid conveying segment, low conveying efficiency, high specific energy consumption and the like of the conventional single screw extruder can be effectively overcome.

The invention discloses a vehicle driving range calculation self-adapting method and device and a vehicle. The method comprises the steps that all variables related to the driving range of the to-be-measured vehicle in a preset variable set are determined; a unit energy consumption model of the to-be-measured vehicle is determined according to the first type of variables in all the variables, and a battery capacity model of the to-be-measured vehicle is determined according to the second type of variables in all the variables; the unit energy consumption of the to-be-measured vehicle is determined according to the unit energy consumption model, and the available capacity of a battery of the to-be-measured vehicle is determined according to the battery capacity model; and the driving range of the to-be-measured vehicle is determined according to the available capacity and the unit energy consumption of the to-be-measured vehicle. According to the vehicle driving range calculation self-adapting method and device and the vehicle, the corresponding unit energy consumption and battery available capacity are determined uniquely according to all the variables related to the driving range of the to-be-measured vehicle, the driving range of the to-be-measured vehicle is determined according to the unit energy consumption and the battery available capacity, the calculation accuracy of the driving range is guaranteed, the error is lowered, and the working efficiency can be improved easily.

The invention discloses a method for preparing acetylene by cracking industrial byproduct gas with rotating arc plasma, which comprises steps as follows: working gas is introduced into a plasma generator through an annular channel between a cathode and an anode, and forms rotating arc plasma after arc starting; industrial byproduct gas and the working gas are mixed, and pass through a high-temperature region of the rotating arc plasma to generate millisecond cracking reaction; and the obtained cracking reaction product is quenched by a cooling medium to obtain acetylene-containing cracked gas, and the acetylene-containing cracked gas is separated to obtain acetylene. The industrial byproduct gas is a hydrocarbon-containing gas mixture; the working gas is one or more of hydrogen, argon and industrial byproduct gas; and the cooling medium is water, hydrogen or industrial byproduct gas. By preparing the acetylene from the raw material industrial byproduct gas, the invention implements high-added-value recycling of the industrial byproduct gas; and the invention has the advantages of short technical process, environment friendliness, high economy, high efficiency, high raw material convention rate, high yield of the product acetylene, and low specific energy consumption.

A system and method for optimizing a process for refining lignocellulosic granular matter such as wood chips use a predictive model including a simulation model based on relations involving a plurality of matter properties characterizing the matter such as moisture content, density, light reflection or granular matter size, refining process operating parameters such as transfer screw speed, dilution flow, hydraulic pressure, plate gaps, or retention delays, at least one output controlled to a target such as primary motor load or pulp freeness, and at least one uncontrolled output such as specific energy consumption, energy split, long fibers, fines and shives. An adaptor is fed with measured values of matter properties and measured values of controlled and uncontrolled outputs, to adapt the simulation model accordingly. An optimizer generates a value of the target according to a predetermined condition on a predicted uncontrolled output parameter and to one or more process constraints.

The invention relates to high pressure tubular reactor olefin polymerization plants having improved specific energy consumption. The plants may be newly constructed or made by de-bottlenecking an existing plant. The tube of the tubular reactor may have improved arrangements for cooling to increase conversion and optimized polymer-recycle gas separation arrangements using a jet pump for recycling unreacted monomer while permitting haze to be maintained. The improved cooling arrangements include a reduced pressure cooling zone forming the tail end of the tube and/or a shortened heating zone for the front feed and allowing more monomer to be fed as a side feed.

The invention discloses an energy consumption modeling and local energy consumption benchmarking method for a horseshoe flame glass kiln. The method includes the steps of building a combustion space model, a melting tank energy consumption model and a regenerative chamber energy consumption model; 2, dividing wall heat loss of the horseshoe flame glass kiln into three control body boundaries, andbuilding a kiln wall heat loss model; 3, by obtaining energy consumption prediction data of the combustion space model, the melting tank energy consumption model and the regenerative chamber energy consumption model, building a glass kiln local energy consumption benchmark, and analyzing energy consumption of the horseshoe flame glass kiln through the glass kiln local energy consumption benchmarkto optimize specific energy consumption of the glass kiln. By means of the method, the energy consumption condition of each key module of the glass kiln, the percentage of energy waste, the managementefficiency of the energy consumption benchmark and the energy saving potential of the glass kiln are reflected, and an important basis is provided for enterprises to formulate practical and feasibletargets and adopt energy conservation and consumption reduction work.

The invention relates to energy-saving microwave drying equipment capable of carrying out sufficient waste heat recovery on microwave steam. The problems that unit energy consumption is high, foreign taste is emitted and potential safety hazards are caused when some materials volatilize combustible gas in the drying process according to existing microwave drying equipment are solved through the product. The equipment is mainly composed of a preheating section and a microwave drying section and accessorily comprises a refrigeration system, a waste heat recovery system and an automatic nitrogen filling system. When the equipment carries out microwave drying on materials, an evaporator in the refrigeration system cools microwave steam into condensate water, remaining warm dry air is recycled, and gas emission is avoided; condensate water is used as an intermediate medium for recycling microwave steam heat which carries out preheating on materials together with heat produced by a condenser in the refrigeration system; and the automatic nitrogen filling system carries out rapid nitrogen filling protection when a combustible gas sensor, a controller and a release valve detect that the concentration of combustible gas in a cavity of the equipment reaches the preset value.

Nitrogen gas at a single pressure is produced from a two-column cryogenic distillation of air. The bottoms liquid product from the high pressure column is divided into portions, at least one of which does not enter the low pressure column as a feed stream. By these means, a portion of an oxygen-rich stream is removed from the distillation, further enhancing nitrogen recovery and achieving low specific energy consumption for nitrogen product.

A process for pretreating lignocellulosic biomass that increases monomeric sugar yields in subsequent enzymatic hydrolysis and reduces specific energy consumption during production of the hydrolysable material. The pretreatment includes a chemical treatment followed by a mechanical size reduction such as a disc refining step, and includes a second chemical treatment, harsher than the first, which may precede or follow the size reduction.

The invention relates to a method and to a model-based controller for controlling at least one part of a paper machine, to a paper machine having such a controller, to a computer program for executing the method according to the invention, and to a computer program product on which the computer program according to the invention is stored.; In order to achieve an improved or optimized operation mode of an "expanded drying section" of a paper machine - comprising the "actual" drying section, separated, if applicable, into pre-drying and post-drying sections with a size press located therebetween, a steam and condensate system, an exhaust air heat recovery system, a wet press and the white water - a model that includes the above system components is proposed, with which mass and energy balances for the system components as well as the specific energy consumption of the drying section are calculated, based on values for parameters relevant for the drying process.

The invention discloses a multi-objective optimization-based design method for a converter for an electric automobile. Mainly from the specific cost of the converter, the first fault mileage and the specific energy consumption of the converter, a multi-objective optimization function is built, and an optimal solution set of design variables meeting constraint conditions is solved. The method comprises the following steps of determining an automobile driving condition; determining an automobile mathematical model and a motor mathematical model and assigning values to original electric automobile parameters; constructing the design variables, such as the chip area and the switching frequency, of the system performance optimization of the converter; building a loss model, a thermal model, a life model and a cost model of the converter; building a multi-objective function of the converter and equation or inequality constraint conditions; performing multi-objective optimization; and endingthe optimization process, and outputting an optimization result. According to the method, on the premise of meeting system design indexes, the cost and the loss can be reduced and the reliability is improved, so that the product competitiveness is improved.

An inorganic oxide powder is produced by a method which comprises a step of (i) introducing, into a dry-way pulverizer, an inorganic oxide in an amount of 100 parts by volume and air, nitrogen or a gas mixture thereof in an amount of from about 25,000 to about 160,000 parts by volume to pulverize the inorganic oxide by the dry-way pulverizer, or (ii) introducing, into a medium-stirring-type pulverizer, an inorganic oxide with a BET specific surface area of from about 1 to about 70 m²/g to pulverize the inorganic oxide by the medium-stirring-type pulverizer in a dry way at a specific energy consumption of from about 0.3 to about 1 kWh/kg. The inorganic oxide powder is capable of providing a ceramic with high density and high mechanical strength.

Nitrogen gas at a single pressure is produced from a two-column cryogenic distillation of air. The bottoms liquid product from the high pressure column is divided into portions, at least one of which does not enter the low pressure column as a feed stream. By these means, a portion of an oxygen-rich stream is removed from the distillation, further enhancing nitrogen recovery and achieving low specific energy consumption for nitrogen product.

The invention relates to a process for liquefying hydrogen. To reduce the specific energy consumption, the following process steps are used: a) the precooling of the hydrogen stream by indirect heat exchange against a pressurized LNG stream to a temperature of between 140 and 130 K, b) the precooling of the hydrogen stream by indirect heat exchange against a coolant to a temperature of between 85 and 75 K, c) where the precooling of the coolant takes place against a pressurized LNG stream, and d) the cooling and at least partial liquefaction of the precooled hydrogen stream takes place by indirect heat exchange against another hydrogen stream channeled through a closed cooling circuit, e) where the precooling of the condensed hydrogen stream, which is channeled through a closed cooling circuit, takes place against a pressurized LNG stream.