126 results about "Gas flux" patented technology

A method of calculating the flux of any gas (x) in a CBC circuit for a ventilated or a spontaneous breathing subject, for example said gas(x) being; a) an anesthetic such as but limited to; i)N₂O; ii) sevoflurane; iii) isoflurane; iv) halothane; v) desflurame; or the like b) Oxygen; c) Carbon dioxide; or the like utilizing the following relationships; Flux of gas(x)=SGF (F_SX−F_EX) wherein SGF=Source of gas flow into the breathing circuit (CBC circuit) in liters/minute as read from the gas flow meter as set by the anesthesiologist; F_SX=Fractional concentration of gas X in the source gas (which is set by the anesthesiologist); F_EX=Fractional concentration of gas X in the end expired gas as determined by a portable gas analyzer, or the like.

The invention discloses a vehicle particle emission measuring device which comprises a particle concentration tester and a data recording and processing module. A tail pipe is sequentially connected with a sampling probe and a sampling dilutor before being communicated with the particle concentration tester, thereby forming a gas flux channel. The sampling dilutor is connected with a diluting control device. The particle concentration tester is connected with a vacuum pump. A pressure sensor and an exhaust flow-meter are arranged in the tail pipe respectively. The pressure sensor, the exhaust flow-meter and the particle concentration tester transmit signals to a data recording and processing module respectively. The invention also discloses a method employing the mentioned measuring devices for vehicle particle emission measurement. The device of the invention arrives at the amount of the mass of particle matters exhausted during the testing process by calculating the data collected by relevant devices, instead of weighing, and can reflect objectively the weight of particle matters exhausted during any test time period, which in turn can play an important role in making effective control tactics.

A system for obtaining emission flux of a gas plume, emanating from a source, includes an airborne differential absorption lidar (DIAL) system for determining multiple concentration path length (CPL) values along a flight path; and an airborne wind measuring system (WMS) for determining a wind vector at the aircraft altitude. Also included is a processor for receiving the multiple CPL values determined by the DIAL system and the wind vector determined by the WMS. The processor uses the CPL values to compute either (a) an area-integrated concentration (AIC) value or (b) an average concentration value over a cross-plume extent, defined along the length dimension of the flight path. The processor also scales the wind vector to the near ground altitude level of the gas plume to obtain a scaled wind vector. The emission flux is obtained by multiplying either the AIC value or the average concentration value with a component of the scaled wind vector. The component of the scaled wind vector is defined by a vector perpendicular to the length dimension of the flight path.

The invention relates to a matrix type dielectric barrier discharge plasma odor processing device which is characterized by comprising a housing, discharge dielectrics, a fixing device, electrodes, electrode outgoing lines, discharge zones and a pulse power supply, wherein the discharge dielectrics are arranged by the fixing device in a matrix type, the electrodes are arranged in the discharge dielectrics and are connected with the pulse power supply through the electrode outgoing lines, and the discharge zones are arranged between the neighboring discharge dielectrics. The odor processing device can be convenient for regulating according to the concentrations of pollutants and the processing air amount of waste gas with foreign smell to make the strength generated by plasma match with the strength of the waste gas to be processed, thereby achieving the optimal pollutant removing effect and running energy consumption. The air resistance and the additionally applied voltage of the plasma reaction system are greatly reduced, the gas flux is enlarged, and the removing efficiency of odorants is improved by above 30%. The device has the advantages of compact structure, good processing effect on the pollutants with the odor and high efficiency and wide generalization and application prospect, and can be widely applied to processing waste gas containing the odorants, such as styrene, hydrogen sulfide, carbon disulfide, organic amine and the like.

A system is provided for determining emission rate of a gas from a source. The system includes a selector for designating an in-plume area extending across a plume of gas. The in-plume area includes a length dimension greater than a width dimension. The system also includes a processor for determining an area-integrated concentration value for the in-plume area. The system further includes a wind vector received by the processor. The processor determines the emission rate of the gas based on the area-integrated concentration value and a vector component of the wind vector.

A gas balance bag is put into a closed box in use for measuring gas flux discharged by soil or plants. An amount of air is filled into the gas balance bag from small hole in the closed box, making the gas balance bag expand so as to take up certain volume in the closed box. Then, extracting gas measuring and calculating processed result are carried out according to traditional method suitable to closed box. The gas balance bag adjusts consistent air pressure between inside box and outside box. Comparing with measuring in site or in lab, the invention measures gas flux discharged by soil or plants accurately and reduces error.

The invention relates to a membrane system which is particular suitable for oxygen generation. It comprises a membrane (14), and a porous substrate (12) for supporting the membrane (14), wherein the substrate (12) comprises pillars (15) and defined channels (16) for bringing a gas in controlled contact with the membrane (14). This membrane system (10) allows a gas flux and is furthermore applicable for small and light devices.

The present invention discloses a silica-like membrane for separating gas, which is modified from poly(dimethylsiloxane) (PDMS) membrane by an atmospheric pressure high temperature plasma torch (APHTPT). Furthermore, the present invention of the separating gas silica-like membrane with an inorganic/organic interface structure which has both the gas flux of the organic membrane and also the gas selectivity of the inorganic membrane.

The invention discloses a blue light-excited white light fluorescent powder and its use and its manufacture process and device. Its molecular formula is aY2O3.bGd2O3. (1.5-a-b)Re2O3.2.5Al2O3.xSiO2, where Re is two or above of Ce, Eu, Tm and Tb; 0<a<1.5, 0<=b<1.5, 0<x<3; it can be used to manufacture white LEDs. Its process steps include preparing precursor solution, aerating, atomizing, reacting, collecting and after-processing. Its manufacture device includes a liquid fillingdevice, an atomization generating device, a gas supplying device, a gas flux control device, a reaction furnace, a powder collecting device, and a purifying processing device. The invention has simple process, high efficiency, good quality, and suitable for industrial production; and low-cost.

The invention relates to a pre-treatment technology of raw material powder used for preparing induction plasma capacitor grade nanometer tantalum powder. The technology comprises the steps as follows: a. tantalum powder with the granularity of 2-10micrometer which is prepared by sodium thermal reduction is used raw material; b. spheroidizing treatment is carried out on the raw material tantalum powder by an induction plasma powder synthesizing system, the technological parameters of the spheroidizing treatment are as follows: medium gas flux is 30 standard liter/min; sheath gas flux is 80-120 standard liter/min of argon and 0-10 standard liter/min of hydrogen; reaction chamber pressure is 50-120Kpa; plasma power is 30-60KW; powder feed rate is 2-15kg/h; cooling gas flux is 300-800 standard liter/min; the relative position of a powder feeder is arranged at the middle part of a plasma area; powder feeding gas flux is 8-20 standard liter/min; c. filtering treatment is that vibration filter is carried out by a 160-220 mesh screen mesh on a screen grader; d. air current grading treatment is that grading treatment is carried out on a cyclone separator, the technological parameters of the g rading treatment are as follows: power feed rate is 2-5kg/h, and the grading gas flux is 300-600 standard liter/min. The invention can carry out the continuous preparation of capacitor grade nanometer and submicron tantalum powder and ensures that the raw material is spherical by spheroidizing, filtering and grading treatment, and the powder with the granularity controlled within 2-5 micrometer takes more than 90 percent of the whole powder; and the invention improves the granularity distribution state, overcomes the aggregation and improves the collection efficiency of the tantalum powder, the utilization rate of energy and material and the electrical property.

A composite membrane comprising a discriminating layer and a porous support layer for the discriminating layer, CHARACTERISED IN THAT the discriminating layer comprises at least 60 wt % of oxyethylene groups and the porous support layer has a CO₂ gas flux of 5 to 150×10⁻⁵ m³ (STP)/m²·s·kPa at a feed pressure of 2.07 kPa. The membranes are particularly useful for purifying waste gas streams e.g. by removing greenhouse gases.

The invention discloses a sea-gas coupled real-time observation buoy system based on Beidou satellite and Iridium satellite double-satellite communication. The sea-gas coupled real-time observation buoy system comprises a sea-gas coupled observation sensor unit, a data collecting communication control unit, an anchoring unit, a buoy body platform, a power supplying unit and a data processing center. The buoy data collecting communication control unit adopts a Beidou satellite system to transmit conventional block method sea-gas flux, upper-layer sea current profile and buoy operation state parameters which have high requirements on data safety and low requirements on the communication quantity, and adopts an Iridium satellite system to transmit high frequency eddy related and high-resolution seawater skin surface temperature profile data which have high requirements on the communication quantity. A buoy can synchronously observe turbulence flux parameters of an eddy-related method of amovable platform, flux parameter of a block method, the seawater 0-1.0 m high-resolution skin surface temperature profile and the 0-70 m upper-layer sea current profile in real time in real time. Thesea-gas coupled real-time observation buoy system is suitable for being released in deep and open sea, and has the characteristics of diverse sea-gas interface observation parameter, safe data transmission and the like.

An apparatus and a method for measuring gas mass-transfer diffusivity of film material relate to an apparatus and a method for measurement of a film material. The apparatus comprises two connected vacuum chambers, that is, a measurement chamber and a plenum chamber of which the background leak rate has been determined. The measurement chamber and the plenum chamber are connected through an air exhaust channel with a sealing flange, the sealing flange faces to the side of the plenum chamber, and flange covers and seal rings are utilized for sealing and fixing a disc-shaped blind flange or a test piece; the plenum chamber is provided with an openable plenum chamber door for facilitating mounting or dismounting of the blind flange or the test piece; and the plenum chamber is provided with a plenum-chamber pressure gage, a pneumatic pipeline with a pressure-adjusting control valve and a pumping pipeline with a plenum-chamber valve. The apparatus employs a porous ceramic support material and accelerates gas transportation rate by utilizing a vacuum pump for making a larger pressure difference, and for film materials with low permeability, the apparatus can rapidly obtain stable gas pressure and gas flux data and has accurate measurement result.

The invention relates to an experiment set, in particular to an acoustic response characteristic simulation experiment set. The acoustic response characteristic simulation experiment set for seabed gas transfer and aquo-complex generation is characterized by comprising a pressure control system, a temperature control system, a detection system, a high-pressure reactor and a computer acquisition system. The pressure control system is communicated with the high-pressure reactor, the high-pressure reactor is arranged in the temperature control system, and the detection system is arranged in the high-pressure reactor and connected with the computer acquisition system. Combined with the bender element detection technology and time domain reflectometry (TDR), the acoustic response characteristic simulation experiment set can monitor change situations of acoustic parameters and aquo-complex saturability in the process of gas transfer and aquo-complex generation in real time, obtained experiment results are closer to seabed environment, and acoustic response characteristic research on generation of aquo-complex with different gas fluxes can be achieved.

The invention discloses a forecast and balance method for tank level of a coke oven gas of steel makers, which comprises the following steps of: determining main gas users having influence on variation of the tank level; based on mass of existing data, creating a tank level forecast model reflecting a relation between the gas tank level and each main gas user through a modern regression modeling method; creating a flux forecast model for each main gas user through the modern regression modeling method by using mass of existing data based on the time sequence forecast thought; forecasting variation trend of the tank level for some time to come; forecasting a gas flux forecasted value of each user according to the created flux forecast model, and inputting the gas flux forecasted value into the tank level forecast model to obtain a forecasted value of variation of the gas tank corresponding to each forecasting time. The forecast and balance method for the tank level of the coke oven gas of the steel makers can accurately forecast variation trends of keeping steady, increasing and descending of the tank level of the gas tank, and can provide rational guidance for on-site dispatchers to finish balance dispatching of the gas.

The invention relates to a cumene oxidizing reaction catalyst and a preparing method and application thereof. The catalyst is nano alkaline earth metal oxide which an auxiliary is added, and the catalyst aperture is of 2-30 nm mesoporous structure; the auxiliary is one of CuO, MnO2, Co3O4, NiO, Cr2O3, ZnO and Fe2O3. The catalyst is nano alkaline earth metal oxide prepared through a hydrothermal synthesis method, and the auxiliary is added to the nano alkaline earth metal oxide, and then an ultrasonic impregnation method is used. The catalyst can be applied to cumene oxidizing reaction, according to the reaction condition, one gram of cumene reaction liquid contains 0.005-0.01 g of catalyst, the gas flux is 100-800 ml/min, the oxygen volume fraction is 20-80%, and the reaction temperature is 70-110 DEG C. The catalyst prepared through the method is high in activity, selectively, mild in reaction condition, high in economy and capable of being used in industrial production.

This invention belongs to the thermal energy utilization device of the mine ventilation gas and includes the counter current circular channel, the centrally positioned porous material and high temperature resistant heat pipe. The mine ventilation gas is conducted circlewise to the bottom of the combustion center, rectified by the gas distribution board, and combusted axially inside the porous medium. The flume is marshaled above and conducted to the circular channel for heat exchange with the mine ventilation gas. Through parallel installation of the combustion units, the real time control of the operational number of combustor based on the mine ventilation gas flux, the control of steam flux and electrical heating components in the high temperature heat pipe based on the temperature of the combusting area, this invention meets the requirement of mine ventilation gas processing on the flux and concentration, and ensures the stable operation of the devices.

The invention relates to a novel electromagnetic proportional valve, comprising a body for arranging a magnetic steel ring, the magnetic steel ring, a movable ring sheathed in the magnetic steel ring, a loop twisted on the movable ring, an inducing control wire on the loop and a central shaft penetrated in the movable ring; wherein both the central shaft and the movable ring are provided with different open pores; the movable ring twisting the loop is driven by a force generated by an electrified loop and magnetic steel cutting; the open pores on the movable ring and the central shaft are linearly changed with the different overlapped areas of the mutual positions, thereby deciding the size of gas flux passed by the opening area. The novel electromagnetic proportional valve avoids the control mode of the original top rod driving membrane to a gas circuit; meanwhile, the electromagnetic proportional valve can better miniaturize the gas circuit due to the better combination with the gas circuit, thus better controlling the noise generated by the gas circuit part.

The present invention relates to a polymeric hollow fiber membrane and a carbon molecular sieve hollow fiber membrane, both of which have excellent gas separation performance, and processes for preparing the same. Specifically, the present invention relates to a hybrid polymeric hollow fiber membrane that comprises a glassy polymer containing fluorine and a ladder-structured polysilsesquioxane, a hybrid carbon molecular sieve hollow fiber membrane prepared by pyrolysis thereof, and processes for preparing the same. The hybrid polymeric hollow fiber membrane and the hybrid carbon molecular sieve hollow fiber membrane according to the embodiments of the present invention are excellent in gas flux and selectivity and can have a large surface area per unit volume. Thus, they can be advantageously used for separating gases with a high energy efficiency on a large scale.