74 results about "Emission coefficient" patented technology

The invention discloses an intelligent prediction method and system for a road traffic pollution source, and belongs to the field of traffic pollution and environment monitoring. The method comprises the steps of obtaining first traffic flow information and vehicle identification information collected by a first detector within a first period of time; obtaining second traffic flow information collected by a second detector within a second period of time; conducting statistics on the occupation rate of vehicle types of vehicles driven in a first road within the first period of time and the occupation rate of emission standards of the vehicle types according to the vehicle identification information and urban in-use vehicle information base; obtaining urban road network traffic flow dynamic information within the first period of time according to the first and second traffic flow information and an urban road network structure chart, and predicting the urban traffic flow information within the second period of time; calculating the urban emission load within the second period of time by means of the occupation rate of the vehicle types, the occupation rate of the emission standards of the vehicle types, vehicle emission coefficients and the urban traffic flow information within the second period of time.

The invention discloses a calculating method of a large-volume concrete cooling temperature field. The method comprises the following steps: superposing the energy of concrete dissipated by the wall surface of a cooling water pipe onto a conventional fonctionelle; establishing a finite element governing equation of the concrete containing the cooling water pipe through a variational principle based on the composite fonctionelle; and then estimating an equivalent heat emission coefficient of a concrete contact surface based on the thickness and the heat conductivity coefficient of the cooling water pipe. The existence of the cooling water pipe is not considered during the mesh generation; sections intersected with concrete units are found out based on the positions of the cooling water pipe after the mesh is formed, thereby a cooling water pipe mesh is automatically formed. The method does not increase the difficulty in the mesh generation, and precisely considers the temperature change around the cooling water pipe. Therefore, the method is an efficient method for analyzing the cooling effect of the cooling water pipe; and the problems that the conventional methods are too big in the degree of freedom and are unable to be calculated by computers are solved.

The invention discloses a method for indoor measurement of the surface heat emission coefficient of concrete. According to the method, the temperature of the environment where an experiment block is located, the moisture content of a heat preservation material and other parameters can be precisely controlled, the surface heat emission coefficient of the experiment block is subjected to high-precision inverse analysis and calculation, and then the surface heat emission coefficient of the concrete covering the heat preservation material (including a water containing frozen heat preservation material) can be precisely tested. The method comprises the steps that 1, the experiment block is manufactured, and a certain number of temperature testing points are buried in the experiment block; 2, the experiment block with the heat preservation material laid is placed in a freezing and thawing test box for automatically controlling and recording the temperatures of the testing points, the temperature of an antifreezing solution and the temperature in the box, wherein the heat preservation material comprises a water containing frozen material, and reasonable temperature value is set for an experiment; 3, according to experiment data, inverse analysis is carried out to obtain the experiment block surface heat emission coefficient beta1 of the experiment block with the heat preservation material laid under the experiment condition; 4, through formula derivation and calculation, the surface heat emission coefficient betaS of the concrete under the field condition is obtained.

A microscopy image, formed by illuminating a sample by shining light onto it in an illumination direction and capturing scattered light, is used to produce an enhanced image. This is done using an expression which links the intensity of the portions of the image to respective values of a scattering parameter at multiple respective elements of the sample. The scattering parameter may be an emission coefficient ρ_em or else equal to an absorption coefficient ρ_αb. This expression is solved to find the values of the scattering parameter. The scattering parameter is used to construct an enhanced image, for example an image which maps the variation of the scattering parameter itself. Provided the scattering parameter is found accurately, the enhanced image should be less subject than the original image to degradation due to non-uniform light attenuation and scattering.

The invention discloses a method and a system for calculating a carbon emission peak value based on energy consumption structure optimization. A scale interval and an occurrence time range of the carbon emission peak value can be calculated by an existing Kuznets curve. However, the movement of the carbon emission peak value cannot be accurately estimated when environmental governance is carried out and an energy policy changes. The technical scheme adopted by the method comprises the steps of (1) constructing a co-integration model and predicting total energy consumption; (2) calculating an optimal energy consumption structure by use of a Markov chain model under the situation of natural evolution and planning constraint; and (3) calculating carbon emissions under different situations according to results obtained in the previous two steps by use of an international standard carbon emission coefficient, and finding out the scale and the occurrence year of the carbon emission peak value. According to the calculation method, the carbon emission peak value is calculated based on the energy consumption structure optimization, the relation among economic development, energy consumptionand environmental constraint is comprehensively balanced, and the formulation of an energy development strategy can be supported.

The invention discloses a calibration-free remote quantitative laser-induced breakdown spectroscopy (LIBS) analysis method. According to the method, a spectrum reference function reflecting the relation between LIBS spectrometer detector digital voltage output and a target laser-induced plasma emission coefficient is tested firstly, then a geometrical relationship model of an LIBS emitting and receiving optical system is established, and then the spectrum reference function and the geometrical relationship model are fit in CF-LIBS quantitative calculation, so that quantitative LIBS detection is achieved. The method has the advantage that due to the fact that the spectrum reference function and the geometrical relationship model of the LIBS emitting and receiving optical system are fit in CF-LIBS quantitative calculation, precision is quite high.

The invention discloses a device and method for measuring a secondary electron emission coefficient of a material. The device is characterized in that an electronic gun, a test fixture and a collection pole are sequentially and parallelly arranged from top to bottom in a vacuum chamber along the central axis z of the vacuum chamber; a micro-channel plate is mounted on the test fixture and comprises an input end and an output end, and the input end faces the electronic gun; working power supplies are located outside the vacuum chamber and comprise the electronic gun power supply, the micro-channel plate power supply and the collection pole power supply which are sequentially connected with the electronic gun, the micro-channel plate and the collection pole correspondingly; an ampere meter is located outside the vacuum chamber and located between the collection pole power supply and the collection pole; and a manipulator is connected with a moving guiding rod in the vacuum chamber through a corrugated pipe. According to the method, an output current of the micro-channel plate is proportional to the secondary electron emission coefficient of the material on the input end, and meanwhile, the secondary electron emission coefficient of the material is measured by taking the secondary electron emission coefficient of the nickel-chromium electrode material as the reference, wherein theinput end of the micro-channel plate is plated with the nickel-chromium electrode material.

Provided is a method for etching graphene nanopores to reduce a secondary electron emission coefficient. The method combines with two different methods to coat a material having a low secondary electron emission coefficient and prepare a trap structure on the surface: the surface is coated with graphene having the low secondary electron emission coefficient, and then nanopores are prepared by adopting an argon ion etching technology. Technically, different secondary electron emission inhibiting effects are achieved by controlling the graphene coating thickness on the surface and the porosity and depth-to-width ratio of the nanopores. It is found through an experimental study that graphene with the thickness ranging from several nanometers to more than ten nanometers deposits on a metal substrate, the secondary electron emission coefficient can be reduced from about 2.0 to 1.5-1.1, and after the graphene nanopores are etched by using argon ions, the secondary electron emission coefficient of the surface is reduced to 0.9, and controllable adjustment from 1.5 to 0.9 of the electron emission coefficient is achieved. The method is simple, convenient and high in stability, and the influence on device surface insertion loss of a conducting coating with nanoscale thickness in a surface loss-less state is smaller. By the adoption of the technical scheme, the secondary electron emission coefficient can be effectively reduced, and the method has a wide application prospect in the fields of particle accelerators, vacuum transmission lines and high-power microwave components.

The invention provides a real-time inversion analysis method of concrete dam block surface heat emission coefficient. The real-time inversion analysis method monitors climatic conditions around a damblock, dam block surface temperature and a temperature inside the dam block in real time; temperature variation parameters inside the dam body are calculated by a direct solution method, by combiningwith shape parameters and material thermodynamic and mechanical parameters of the dam body, an interpolation and iteration method is used for inversely analyzing and determining the dam block surfaceheat emission coefficient based on a finite element method, temperature control and cracking prevention can be carried out better, and the accuracy and calculation efficiency are higher.

The present invention discloses a kind of inner-outer fin tube and fin tube group, and it is formed from inner core, outer tube, fin A and fin B. It is characterized by that it in the interior of outer tube the inner core is set, between inner core and outer tube the fin A is mounted and between outer tube and outer wall the fin B is mounted. Said invented fin tube and fin tube group are equiopedwith high-efficiency compact secondary heat-conducting surface respectively on inner wall and outer wall of heat-exchange tube, and can be used in the heat exchanger in which the heat emission coefficients of its two side heat exchange fluids are smaller and/or approximate. The structure of said heat exchange is more reasonable, compact and high in heat-conductive efficiency, specially it is applicable to gas-gas medium heat exchange.

The invention relates to a far infrared ceramic material, in particular to a high-tenacity high-strength far infrared ceramic and a preparation method thereof. The method comprises steps as follows: (1), alpha-Al2O3 and nano ZrO2 (2Y) precursors are weighed proportionally, put into an aqueous alkaline solution, stirred and mixed, and a high-dispersion and uniformly mixed two-phase aqueous suspension of alpha-Al2O3 and nano ZrO2 (2Y) is prepared; (2) the two-phase aqueous suspension prepared in the step (1) is calcinated into powder; and (3) toughened SiC crystal whisker, the powder prepared in the step (2) and MgO powder are uniformly and proportionally mixed and subjected to compression molding, high-temperature vacuum sintering and furnace cooling, and a ceramic material is prepared. The high-tenacity high-strength far infrared ceramic material has higher far infrared radiation emissivity, and a test shows that the far infrared emission coefficient of the far infrared ceramic material is larger than 0.8; and the ceramic material has high hardness, high temperature resistance, chemical corrosion resistance and abrasion resistance, the service life of the far infrared ceramic is prolonged, and the far infrared ceramic can be applied in more application fields.

The invention provides a continuous spectrum absolute intensity diagnosis method for the electron density of Ar jet plasmas under different pressures. The method includes the following steps that: step 1, the intensity change process of a light beam in jet plasmas is described; step 2, absolute radiance is determined; step 3, the expression of the emission coefficient of a continuous spectrum in the plasmas is determined; step 4, the emission coefficient expressions of the recombination process of electrons and ions, the collision effect of the electrons and ions, and the collision effect of the electrons and neutral atoms are defined, wherein the recombination process of the electrons and the ions, the collision effect of the electrons and ions, and the collision effect of the electrons and neutral atoms are respectively represented by three symbols descried in the descriptions of the invention; step 5, an average collision cross section QAr(Te) is fitted; step 6, a total emission coefficient is obtained; step 7, the expression of the total emission coefficient of which the form has been adjusted is obtained; step 8, the equation for the total emission coefficient is solved; and step 9, Taylor expansion is performed on the sign of evolution of a solution, so that the electron density is obtained. The diagnosis method of the invention has the advantages of wide application range and low cost.

The invention relates to the technical field of decorative materials detection, and discloses a method for predicting the release concentration of the formaldehyde in decorative materials under conditions of the different temperature and humidity. The method comprises steps of: performing fitting on the temperature and humidity coefficients, according to the existing formaldehyde concentration data and an equation (7); measuring the formaldehyde release concentration by the spectrophotometry or the like for the materials placed in an environmental chamber, recording data for 24 hours, and recording the temperature and humidity data of the environment chamber in the measurement process at the same time; drawing a measured concentration curve over time, and obtaining an emission coefficientk and a limiting concentration C0 by data fitting, according to the exponential law of the formula (5); and substituting the bearing rate L, the prediction time t, the limiting concentration C0, the emission coefficient k, the predicted temperature T, and the predicted humidity RH into the prediction equation (7), so that the formaldehyde release concentration of the material under the condition of predicting indoor temperature and humidity is calculated, and the prediction is finished. According to the method for predicting the release concentration of the formaldehyde in decorative materialsunder conditions of different temperature and humidity, the method has the advantage of predicting the release concentration of the formaldehyde in the building decorative materials under conditionsof different temperature and humidity.

The invention discloses a frequency diversity array deception jamming suppression method based on an auxiliary array element. Main lobe deception jamming is mainly suppressed. The frequency diversityarray deception jamming suppression method comprises the specific steps that conventional radar emission and receiving systems are adopted, all targets of the airspace at the moment are obtained; switching is conducted into a frequency diversity mode, main array emission coefficients are set, and the echo amplitude phase characteristics of a main array emitting antenna are calculated; according tothe main array emission coefficients, auxiliary array element coefficients are adjusted, and a zero point is constructed in a directional diagram at the specified target; echoes of emission frequencydiversity signals of the main array coefficients and the auxiliary array coefficients are subjected to matching filtering; and a threshold value is set, if the echo matching filter power at the specified target position is larger than the threshold value, it is judged to be a false target, if the echo power at the specified target position is smaller than the threshold value and the echo power atother positions is suddenly decreased, it is judged to be a jammer, and if only the echo matching filter power at the position is smaller than the threshold value, it is judged to be the false target.