Method for definition of moisture condensation conditions in mixing of two air flows and device for its realisation |
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IPC classes for russian patent Method for definition of moisture condensation conditions in mixing of two air flows and device for its realisation (RU 2368936):
   
 Method of regulating thermal decomposition of oil residues in tube furnaces / 2367679
Method involves measurement of a temperature parametre, comparison the actual temperature parametre with a given parametre and, depending on the difference value, reduction of this value by changing flow of fuel to burners of the corresponding section coil pipe of the furnace. The temperature parametre used is the temperature profile along the coil pipe and the given temperature profile for each section of the coil pipe is calculated using the formula
 Method for operating mode of caprolactam production / 2366651
Invention refers to the method for operating mode of caprolactam production from benzene carried out in the plant with one process line including the stations of benzene hydrogenation with hydrogen, cyclohexane oxidation with oxygen, cyclohexanone rectification, oximation, cyclohexanone oxim rearrangement to caprolactam, neutralisation of the reaction mixture with ammonia and mixing of caprolactam. The said stations are connected with pumps, pipelines with sensors and valves for consumption control of benzene, hydrogen, cyclohexanone, hydroxylamine sulphate and oleum, sensor of acid value and pH-metre of caprolactam. The said line contains additionally the second process line of caprolactam production from phenol including the stations of phenol hydrogenation with hydrogen, dehydrogenation of cyclohexanol with circulation circuit including: pump - station of cyclohexanol dehydrogenation - station of cyclohexanone rectification - pump, station of cyclohexanone rectification, oximation with hydroxylamine sulphate, rearrangement of cyclohexanon oxim to caprolactam and neutralisation of the reaction mixture with ammonia connected by pumps and pipelines with sensors and valves for control of benzene, hydrogen, cyclohexanone, hydroxylamine sulphate and oleum consumption, sensor of acid value and pH-metre of caprolactam and contains the device of benzene-phenol ratio connected with stations of benzene and phenol hydrogenation, oxidation and dehydrogenation; device of cyclohexanone distribution to the oximation stations connected with rectification stations and (through the cyclohexanone mixing tank) with the oximation stations; device of crystalline caprolactam switch-over to liquid caprolactam connected with caprolactam mixer, concentrator of crystalline caprolactam and tank of liquid caprolactam. The total caprolactam capacity, benzene-phenol ratio, cyclohexanone distribution to oximation stations, shipping of crystalline and liquid caprolactam to customers are set up; the consumption of benzene, phenol, hydrogen, cyclohexanone, hydroxylamine sulphate and oleum are corrected with corresponding valves.
 Production area environmental control device / 2363031
Invention relates to instrument making and can be used to control production area environments. Proposed device comprises regulator unit, control unit, temperature pickup, noise and illumination pickups. It also includes transducers of signals generated by the temperature, noise and illumination pickups. It incorporates setters of maximum and minimum tolerable temperatures, maximum tolerable noise and maximum tolerable illumination. The device includes comparator for every aforesaid setter and logical elements for every aforesaid controlled parametre. It incorporates the 1st , 2nd, 3rd and 4th logical elements, read-only memories for all controlled parametres, shift registers and counters of all aforesaid parametres. In compliance with this invention, the proposed device additionally comprises I/O units, communication unit, satellite receiver unit, power supply monitor, power buffer, ADC, real-time clock unit, RAM, nonvolatile memory unit. It incorporates, further on, real-time clock storage battery, relative humidity pickup with amplifier, airflow speed pickup with amplifier, environment heat load intensity pickup with amplifier, carbon oxide concentration pickup with amplifier, sulfur oxide concentration pickup with amplifier, nitrogen oxide concentration pickup with amplifier, ozone concentration pickup with amplifier, town gas concentration pickup with amplifier, power supply voltage pickup with amplifier and power supply.
 Method for control of potassium chloride preparation / 2359909
Invention can be used in the process of potassium chloride preparation by the method of solution-crystallisation. The method for the control of the aforesaid process by the way of input water flow varying includes: 1) the adjustment of water flow fed into crystallisation alkali liquor depending on potassium chloride concentration in the liquor and water consumption for washing of crystallisation apparatus; 2) detection of the temperature, density and consumption of alkali liquor. The said measurements allow to determine the sodium chloride content in the alkali liquor. The crystallisation water consumption is calculated on the basis of the obtained data according to proposed equation; the calculated values are input as assignment to the system of water consumption control.
 Control of process of production of loose form of powdery choline chloride from its aqueous solution / 2356907
Invention is related to automation of technological processes and may be used in automation of process of production of loose form of powdery choline chloride from its aqueous solution. In method that provides for use of crushed and fractionated dry sugar beet pulp as active adsorbent, its mixing with previously heated aqueous solution of choline chloride, and then drying in vibration dryer by superheated steam of atmospheric pressure, separation of spent superheated steam flow into the main one, sent to vibration dryer with creation of recirculation circuit, and additional one sent for reheating of choline chloride prior to its supply for mixing, the novelty is the fact that superheating of atmospheric pressure steam is done with heating steam, at that heating steam is produced by means of steam generator with electric heating elements, feed pump and safety valve, heating steam condensate produced in this process after superheating and condensate produced during heating of aqueous solution of choline chloride is taken to condensate collector, and then in mode of closed circuit is supplied in steam generator, at that flow rate of crushed and fractionated dry pulp is measured, as well as aqueous solution of choline chloride coming for mixing, flow rate and temperature of superheated steam upstream vibration dryer, choline chloride temperature before and after its heating, pressure of choline chloride after heating, temperature and humidity of mixture of crushed and fractionated dry pulp and aqueous solution of choline chloride prior to supply for drying, amplitude and frequency of oscillations in gas-distributing grid of vibration dryer, flow rate and humidity of powdery choline chloride after drying, level of condensate in steam generator and pressure of heating steam, at that flow arte of dry sugar beet pulp after fractionation is used to set flow rate of heated choline chloride coming for mixing, and flow rate and humidity of prepared mixture of crushed and fractionated dry pulp and aqueous solution of choline chloride prior to supply for drying, flow rate and humidity of powdery choline chloride after drying are used to determine amount of evaporated moisture in vibration dryer, which is used to establish flow rate of superheated steam in the main circuit of recirculation, and its temperature is established by current value of temperature of mixture of crushed and fractionated dry pulp and aqueous solution of choline chloride by setting of specified capacity of steam generator affecting power of electric heating elements, at that in case condensate level in steam generator falls below specified value, condensate is supplied from condensate collector, and when pressure of steam in steam generator reaches upper limit value, steam pressure is released through safety valve, if flow rate of mixture of crushed and fractionated dry pulp and aqueous solution of choline chloride deviates prior to supply for drying to the side of increase from specified value, at first frequency is increased, and then amplitude of oscillations in gas-distributing grid of vibration dryer, if flow rate of mixture of crushed and fractionated dry pulp and aqueous solution of choline chloride deviates to the side of reduction from specified value, at first frequency is reduced, and then amplitude of oscillations in gas-distributing grid of vibration dryer, current values of temperature and flow rate of choline chloride prior to heating are used to set flow rate of spent superheated steam in additional recirculation circuit, at that temperature of choline chloride after heating is used to set specified pressure of choline chloride at the inlet to mixer.
 Method of controlling process of sylvinite ore dissolution / 2352385
Invention relates to technique of controlling processes of sylvinite ores dissolution and can be used in production of potassium chloride by dissolution-crystallisation method. Method of controlling processes of sylvinite ores dissolution includes regulation of ore supply depending on content of useful component in input flows, measuring ready solution temperature and determining sodium chloride content in solution by calculation method. Additionally determined are density, temperature and consumption of dissolving solution, content of sodium chloride in it is determined by content of useful component, density and temperature. Ore supply is calculated according to suggested equation and calculated value is given as task to system of weigher control.
 Automated method of controlling and managing process for preparing sugar syrup mixture for crystallisation by cooling / 2342438
Proposed automated method of controlling and managing the process of preparing sugar syrup mixture for crystallisation by cooling makes provisions for regulating the volumetric discharge of water entering the mixer and the level of sugar syrup in it. Regulating the level of the sugar syrup in the vertical mould is achieved by acting on the adjustable-frequency electric drive of the sugar syrup pump. Periodically using the lab the density of the ready sugar syrup is controlled at the exit from the mixer. The active electrical power which is used in the electric motor of the sugar syrup pump, the temperature and pressure differential of the sugar syrup mixture, coming from the mixer and water at the entrance of the mixer are all measured. The water-mass density is calculated by its temperature and the density of the sugar syrup mixture by its pressure differential. Afterwards the volume flow rate is worked out by the measured volume flow rate of water, by the estimated value of the density of water and sugar syrup mixture and by the density of ready sugar syrup measured in the laboratory. The dependency ratio of the active electric power from the volume rate of flow of the sugar syrup mixture and the differential in its pressure N=α1Q3 УΔPy+α2QyΔPy , where N - active electric power; QY - volume rate of flow of sugar syrup mixture entering the mixer; ΔPY - pressure differential of the sugar syrup mixture; α1, α2 - coefficients. The obtained plot is used for future calculations of volume rate of flow of sugar syrup mixture only with measured values of active electric power and pressure differential of the sugar syrup mixture. The current task of the regulator of the volumetric water discharge is determined on the basis of measured values of this output, estimated values of the density of sugar syrup mixture, water and volume rate of flow of the sugar syrup mixture, the determined value of density of ready sugar syrup mixture and the task of the regulator calculated in the previous control step. The solid content of the original sugar syrup mixture is controlled - by its temperature and density in the ready sugar syrup mixture. This invention makes it possible to reduce the loss of sugar from molasses due to a more qualitative stabilisation of the density of molasses on its exit from the mixer.
 Work environment remote control device / 2335795
Device contains control unit, temperature sensor, noise sensor and luminance sensor, temperature, noise and luminance signal converter per each sensor, boundary value generator per each controlled factor, comparator per each generator of maximum permissible values of measured temperature, noise, luminance, logic elements per each controlled factor, read-only storage per each controlled factor, shift registers, value counter of each controlled factor, control unit and generator. Besides, device contains relative humidity detector, air speed transducer and pulse number sensor, signal converters of relative humidity, air speed and pulsation factor per each sensor, boundary value generator per each additional controlled factor, comparator per each generator of each additional controlled factor, logic elements per each controlled factor, read-only storage per each controlled factor, shift registers, counter of maximum relative humidity, counter of minimum relative humidity, counter of air speeds, counter of pulsation factors.
 Work environment remote control device / 2335794
Device contains control unit, temperature sensor, noise sensor and luminance sensor, temperature, noise and luminance signal converter per each sensor, boundary value generator per each controlled factor, comparator per each generator of maximum permissible values of measured parameters, logic elements per each controlled factor, read-only storages per each controlled factor, four shift registers, counter of maximum temperature, counter of minimum temperature, noise counter, luminance, control unit and generator. Besides, device contains chemical sensor with converter, chemical concentration generator, logic element of maximum chemical concentrations, read-only storage of maximum chemical concentrations, shift register, counter of maximum chemical concentrations.
 Air humidity detector / 2332701
Invention can be applied for automated systems of microclimate control in closed warehouse space for improving accuracy of heat and humidity calculation in controlled variable air medium. Detector contains temperature sensor, relative humidity and atmospheric pressure detectors, temperature converter to air vapour pressure, and computing unit. Using of converter and atmospheric pressure detector allows for increased accuracy of humidity detection. Invention provides automated real-time humidity and increased accuracy of humidity detection.
 Controller for feedback system / 2368933
Invention is related to electronic engineering and automatics and may be used in digital and analog automatic systems of control, regulation and stabilisation of various values (temperature, generation frequency, speed, etc) with feedback, used in various industry fields and scientific research, where automatics is used. Controller for feedback system comprises serially connected subtracting device and subsequent channel that connect inlet and outlet of controller that is introduced between inlet of the whole system and object inlet. It also comprises serially connected bypass channel and summator, besides inlet of bypass channel is connected with outlet of subsequent channel. Outlet of summator is connected to inverting inlet of subtracting device, and its second inlet is connected to outlet of device. Besides amplification of parallel channel in the area of high frequencies considerably exceeds amplification of object, and in the area of low frequencies it is considerably lower than object amplification.
 Electrohydraulic direct control follow-up drive with adaptive properties / 2368932
This invention relates to the automation and can be used in aircraft automatic flight control systems Electrohydraulic follow-up drive comprises proportional-plus-derivative action controller and steering gear adjuster containing the first scaling amplifier, the first filter, the fifth amplifier with adjustable limitation, the second integrator, the second comparison element, the second differentiating element in limited frequency range, the second scaling amplifier, amplifier-summer with adjustable limitation and the second filter connected with each other and other assemblies of electrohydraulic follow-up device as stated in application documents.
 Implementation method of two-position controller / 2362198
Invention relates to self-operated control, particularly to implementation of two-position controllers with adaptive positions in the form of attachment, add-on to output channel of conventional two-position controller. In contrast to well-known methods of creation of adaptive two-position controllers, with contact connection of functional link of position reconfiguration, it is provided noncontact option of connection of this link. Invention can be used while automation of industrial projects, as and objects of household appliances, particularly those where for self-operated control of any processing values there are used conventional two-position controllers. Connection to it of proposed attachment transforms controllers into adaptive, that is into controllers, positions of which are adjusted to load, where object operates. Additionally it takes place essential decrease of vibration amplitude of processing value and reduction of frequency of these oscillations.
 Electric drive control method and electric drive / 2361355
Invention relates to electric engineering, particularly, to electric drives and may be used on metal-working machines or metal-working machine-based plants. The electric drive control method provides for generating control signals by changing their frequency based on constant optimal relative and linear speed of item or tool in metal-working machine. Control signal frequency is generated as a function of cutting tool position relative to the item rotation centre. In addition, the electric drive includes data input unit, startup unit, calculator, timer, actuation unit, current sensor if motor winding, comparator 21. All the above-mentioned items are coupled with the other electric drive units according to claims.
 Control with relay characteristic / 2359305
Present invention refers to automation means and can be used in process control systems in chemical industry, heat engineering as well as for generating signals of various frequency and amplitude. The effect of the invention is achieved by the fact that the control contains a detection unit of input signal deviations from the specified value of dead zone, extreme points indicator, null element, setting devices of output signal levels, a switch, and switching elements. Peculiar feature of the control consists in the possibility of changing its static and dynamic characteristics by means of changing the settings. In particular, operation algorithm of the device allows implementation therein both of positive and negative variable hysteresis the value whereof is linear dependent on input signal amplitude.
 Gas-static thrust-axial bearing with pneumatic controller of shaft position / 2357122
Invention is related to pneumatically controlled thrust-axial gas-static sliding bearings and may be used in turbines. Bearing comprises body, shaft (2), thrust disc (1), which is rigidly put on bearing shaft (2) and installed between fixed supports (3, 4) of body on both sides of disc (1), group of pair throttles (7-14) of feeders, which are axially opposite and separated by disc (1). Inlet channels of controller (21) for control of shaft position (2) are connected by communication pipelines (17, 18) with indicator nozzles (5, 6), which are arranged in the same body. At that indicator nozzles (5, 6) are coaxially opposite, are separated by disc (1), are installed diametrically closer to bearing center compared to pair throttles of feeders (7-14), and they create elements nozzle-gate with disc (1). Outlet channels (22, 23) of controller are connected by communication pipelines with membrane-plate units (26, 27), which are arranged with self-centered plates (30, 31), which have guide surface. Outlets of units (26, 27) are connected by communication pipelines with according group of pair throttles (7-14) of feeders.
 Electric drive control device / 2351972
Proposed device comprises the unit to control the drive r.p.m. control output signals, braking control output signal unit, power supply unit, drive fault signal generation unit, drive brake control signal power amplifier unit, drive fault signal display unit, the units designed to stop the aerial at lower r.p.m. at preset and zero positions, those to vary r.p.m, to brake and brake-off. The said units and connections between them allow controlling the electric drive by varying aerial r.p.m. and its braking frequency so as to stop it at preset and zero positions.
 Gasostatic radial-thrust bearing with shaft position adjuster / 2347961
Invention relates to machine building, namely, to gasostatic plain bearings and can be used in facilities with rotary shafts, particularly, in common industrial turbo units and aircraft gas turbine engines. The proposed gasostatic radial-thrust bearing comprises bearing housing (1), shaft (2), diametrically opposite dual indicator nozzles (3, 4, 5, 6) separated by shaft (2) and diametrically opposite dual bearing throttles (7, 8, 9, 10, 11, 12, 13, 14) corresponding to the said nozzles, adjustment throttles (51, 52, 53, 54, 55, 56, 57), shaft position adjuster comprising two jet-type control units (15, 16) with the channels to control the primary jet elements (17, 18, 19, 20), and pipelines. The inlets of channels (21, 22, 23, 24) of each unit (15) and (16) communicate with appropriate pairs of nozzles (3, 4, 5, 6). Every unit (15) and (16) is connected with unit (25, 26, 27, 28) including membranes (41, 42, 43, 44) and dead membrane chambers (29, 30, 31, 32) connected to appropriate outlets of appropriate unit (15) and (16). In the other side of membrane (41, 42, 43, 44), each unit (25, 26, 27, 28) has an open chamber (33, 34, 35, 36) communicating with atmosphere and furnished with nozzle (37, 38, 39, 40) connected to appropriate pipeline forcing air to appropriate throttles (7, 8, 9, 10, 11, 12, 13, 14). The ends of shaft (2) accommodate augers (58, 59) that form, with shaft (2) running, a counter flow of the primary airflow in its circulation gap.
 System and method of transmission of feedback control for actuation device / 2345398
Invention concerns automatics field, in particular, to guidance of the process having of some mechanisms of feedback control. Controller includes the first and second modules of servomotor control which generate the first and second leading signals on the basis of the information of a feedback from the first and second data units for guidance of a control mean of process according to the first and second control modes, accordingly. The controller also includes the module of transmission of feedback control which transfers control of operation of a control mean of process of the first control mode in the second control mode on the basis of the information of a feedback from the first data unit. In some versions, such transmission of guidance guesses the program of guidance which initiatingly generates the second leading signal on the basis of the first leading signal for the purpose of maintenance with smooth, without shocks, guidance transmission between control modes.
 Relay regulator / 2342690
Present invention pertains to automatic control technology, particularly to the technology of generating control signals. The relay regulator contains, in each of (2m+1) channels, an analogue-to-digital converter, memory device, digital comparator, pulse generator, pulse counter, trigger, multiplexer, first and second majority elements, OR and XOR elements. The given parameters of duration τd and interval τi of the control signal as a function of the input signal are stored in the memory device and due to continuous comparison of real values with given values, the relay regulator does not cause delays in the control system. Due to defined connections, correct functioning of the relay regulator can be achieved when there are faults in m channels of the regulator. The proposed relay regulator can be used in different control systems, particularly in spacecraft.
 Method and device for automatic control of nuclear reactor power / 2244350
Proposed method includes maintenance of desired neutron power involving generation of relay control signals in response to neutron power error signal depending on its magnitude and polarity; desired value of neutron power is shaped depending on pressure error signal by adding proportional and integral components of desired neutron power, and integral component of desired neutron power is not shaped when control signal is applied. Nor is integral component of neutron-power desired value shaped when modulo pressure error signal is lower than pressure dead zone, and proportional component of desired neutron power value is produced with coefficient of proportionality changed depending on pressure error signal and is limited in value; in absence of automatic control integral component of desired neutron power is set to value causing zero neutron-power error signal. Device implementing this method is provided in addition with relay unit, one more OR gate, one more control switch, switch, first and second push-buttons, power supply, and nonlinear unit.
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FIELD: instrument making. SUBSTANCE: stated invention is related to method and device, and may be used in the field of automation of mixed air flows parametres control in ventilation systems. Device for method realisation comprises metres of initial values of temperature and moisture content of mixed flows, metre of barometric pressure, outlets of which are connected to inputs of initial parametres processing and setting. Besides outlet of initial parametres processing and setting is connected to inlet of functional converter of temperature differences, and outlet of functional converter is connected with inlet of computing unit. Also outlet of computing unit is connected to inlet of temperature difference sign analysis unit, outlet of which is connected to inlet of outlet signal generator. Device outlet is outlet of outlet signal generator. EFFECT: higher accuracy of moisture condensation conditions definition, automation of definition process and prediction of condensation conditions. 2 cl, 2 dwg
The present invention relates to the field of automation control parameters of the air in ventilation systems, use of natural conditions for creating a microclimate with the given parameters, for example, during long-term storage of agricultural products in closed warehouses. There is a method of determining conditions of condensation by mixing two air streams for a given initial temperature and moisture content of the mixed streams [1]. In this way condensation conditions are determined by the graphic-analytical method using I-d diagram. This method was adopted for the prototype. The method adopted for the prototype, has low accuracy of determination of the conditions of condensation, requires I-d charts, you can use it in automatic mode difficult. The technical task of the invention is to improve the accuracy of the determination and prediction of the onset of condensation by mixing two air streams, providing the possibility of determining conditions of condensation in automatic mode Specified in the task result is achieved that the range of initial values of moisture content determine the moisture content corresponding to the extreme difference of the temperature of the mixture and the temperature corresponding to the saturated SOS is the right of moist air at a given barometric pressure (saturation temperature), determined by the expression tn=(156-236L)/(L-8,12), where L=lg [Bd/(622+d)], d is the moisture content, g/kg, In - full (barometric) pressure, mm Hg, tn- saturation temperature, °C, determine the absolute value and the sign of the extreme difference of the temperature of the mixture and the saturation temperature for the found values of moisture content, the sign and magnitude of extreme temperature differences make a conclusion about the conditions of condensation, and if the extreme difference between positive and greater than zero, the conditions for condensation are missing, and if extreme the difference is zero or negative, then condensation is possible in the range of those values of moisture content at which the temperature difference takes zero or negative values. A device for implementing the method comprises measuring the temperature and moisture content of the mixed air flow meter is full (barometric) pressure, the processing unit and the input parameters, functional Converter the temperature difference computing unit, the unit of analysis of the sign of the temperature difference, the shaper output, outputs, measures temperature, humidity and barometric pressure are connected to the inputs of the processing unit and the input parameters, the output of the processing unit and the input parameters is connected to the input of the function is optional Converter temperature difference, the output function of the Converter is connected to the input of the computing unit, the output of the computing unit is connected to the input unit of analysis of the sign of the temperature difference, the output of the analysis block of the sign of the temperature difference is connected with the input of the shaper output, the output is the output of the shaper output. The inventive method for determining conditions of condensation by mixing two air streams is different from the known, taken as a prototype, that analyze the difference between the temperature of the mixture and the temperature corresponding to the saturated state of the moist air at the measured (this) is full (barometric) pressure (saturation temperature) for a range of values of moisture content enclosed between the original values of moisture content, determine the value of the moisture content at which the temperature difference takes an extreme value, determine the absolute value and the sign of the temperature difference, the sign of the difference between make a conclusion about the presence or absence of the conditions of condensation, and if the difference is positive and greater than zero then the conditions for condensation are missing, and if the difference is zero or negative, then condensation is possible in the range of those values of moisture content at which the temperature difference is zero or negative. the Proposed method is implemented by calculation, without graphic plots, takes into account the real barometric pressure and the measured (or specified) initial values of temperature and moisture content of the mixed flow, therefore, can be carried out in automatic mode with high accuracy allows the use of modern computing hardware and software. Distinctive features of the claimed device is the presence of a processing unit and setting the initial parameters, functional Converter temperature difference computing unit, unit of analysis of the sign of the temperature difference, the shaper output, configuration, connection blocks and meters between them. Comparative analysis of the proposed technical solutions to the prototype allows to make a conclusion on compliance with a criterion of the invention of "novelty." Of patent and technical literature is not known above-mentioned distinguishing features of the method and device for its implementation in their entirety. Thus, the inventive method and device meet the criteria of the invention "inventive step". The proposed method and the device can be used in the systems of regulation of microclimate parameters storage of agricultural products, the development of air conditioning systems, protection systems con is ncacii moisture. Modeling and calculations have shown the efficiency and high accuracy of determination of the conditions of condensation. Thus, the proposed method and device for its implementation meet the criteria of the invention "industrial applicability". The method for determining the conditions of condensation by mixing two air streams and device for its implementation are illustrated by the drawings, where figa, b shows a graphical illustration of the method for two cases: figa - condensation conditions are absent, PIGB - condensation is possible in the range of vegetariani dK1-dK2. Figure 2 shows the structural diagram of the device. Figure 1 is denoted by: t - temperature; d is the moisture content; tl(d) - line mixing process two streams having initial parameters t1d1for the first stream, t2d2for the second thread; dethe moisture content corresponding to the extreme value of a difference of temperatures (tl-tn); tlthe temperature of the mixture; tn- temperature saturation; tn(d) line busy condition of moist air at a given barometric pressure. Analytical expression of this line in the coordinates t, d has the form tn=(156-236L)/(L-8,12), °C, where L=lg(Bd/(622+d)); barometric pressure, mm Hg; d is the moisture content, g/kg; dK1dK2the government is soderzhaniya, the corresponding zero temperature difference. In figure 1 the dotted line depicts the dependence of the difference between the temperature of the mixture and saturation temperature on the magnitude of the moisture content. The range of possible changes of the parameters of the mixture are depicted in figure 1 by a straight line tl(d)drawn through the points with coordinates corresponding to the initial values of temperature and moisture content of the mixed streams. Analytical expression characterizing the line temperature difference will be
The equation to determine the value of moisture content decorresponding to the extreme value of a difference of temperatures (tl-tnin the range of vegetariani (d2-d1) is
The solution of equation (2) with respect to d gives the value of deat which line is the temperature difference has the greatest deflection in the considered range of values of moisture content (figure 1). If the line tl(d) intersects the line tn(d) or touches it, then the coordinates of the intersection points are determined from equation (1) under condition (tl-tn)=0. This will define the range of values of moisture content dK2-dK1where possible condensation in the mixing process, the considered flows. On the set values of d edefined in equation (2), in equation (1) gives the absolute value and the sign of the extreme temperature difference (tl-tnin the considered range of parameters. The analysis of the sign and the absolute value of the extreme difference gives the answer about the presence or absence of conditions of condensation. Figure 2 presents a structural diagram of a device that implements the proposed method, where indicated: 1, 2, respectively datalogger temperature t1, t2the initial state of the mixed first and second streams; 3, 4 - a measure of the moisture content d1d2the respective threads; 5 - meter full (barometric) pressure; 6 - processing unit and the input parameters; 7 - functional Converter temperature difference; 8 - computing unit; 9 - block analysis of the sign of the temperature difference; 10 - shaper output. The device operates as follows. Unit 6 processes the input signals t1, t2d1d2B received from 1-5 meters, and convert them into signals suitable for further calculations. Unit 7 implements the equation of the temperature difference with the specific data received from unit 6. Computing unit 8 determines the values of dedK1dK2corresponding to the source data, and transmits them in the array is 9, analyzing the sign of the temperature difference at a particular value of moisture content de. The analysis result output unit 9 is fed to the input of the processing unit of output signal 10, the output of which a signal is generated that is suitable for use in the automation system or for visual perception. The technical result generated by the present invention is to improve the accuracy of determining the conditions of condensation by mixing two air streams and to enable automation of procedures for determining conditions of condensation, as well as monitoring and forecasting of the process of condensation from air mixture. Sources of information taken into account 1. Nesterenko A.V. Basis of thermodynamic calculations of ventilation and air-conditioning. - M High school. 1971, p.27, Fig.10. 1. The method of determining conditions of condensation of moisture during the mixing of two air streams at a known initial values of temperature and moisture content of the mixed flow, characterized in that the range of initial values of moisture content determine the moisture content corresponding to the extreme difference of the temperature of the mixture and the temperature corresponding to the saturated state of moist air at a given barometric pressure (saturation temperature), defined what about the expression t n=(156-236L)/(L-8,12), where L=lg [Bd/(622+d)], d is the moisture content, g/kg, In - full (barometric) pressure, mm Hg, tn- saturation temperature, °C, determine the absolute value and the sign of the extreme difference of the temperature of the mixture and the saturation temperature for the found values of moisture content, the sign and magnitude of extreme temperature differences make a conclusion about the conditions of condensation, and if the extreme difference between positive and greater than zero, the conditions for condensation are missing, and if extreme the difference is zero or negative, then condensation is possible in the range of those values of moisture content at which the temperature difference takes zero or negative values. 2. The device for implementing the method for determining conditions of condensation by mixing two air streams containing thermometers and moisture content of the mixed flow, measuring barometric pressure, characterized in that it is further provided with a processing unit and setting the initial parameters, the functional Converter temperature difference computing unit, the unit of analysis of the sign of the temperature difference, the shaper output, outputs, measures temperature, humidity and barometric pressure are connected to the inputs of the processing unit and job source the x parameters the output of the processing unit and the input parameters is connected to the input of functional Converter temperature difference, the output function of the Converter is connected to the input of the computing unit, the output of the computing unit is connected to the input unit of analysis of the sign of the temperature difference, the output of the analysis block of the sign of the temperature difference is connected with the input of the shaper output, the output is the output of the shaper output.
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