EP3545297A1 - Verfahren zur ermittlung eines brennwertes und/oder eines wobbe-index eines gasgemisches - Google Patents
Verfahren zur ermittlung eines brennwertes und/oder eines wobbe-index eines gasgemischesInfo
- Publication number
- EP3545297A1 EP3545297A1 EP17808769.8A EP17808769A EP3545297A1 EP 3545297 A1 EP3545297 A1 EP 3545297A1 EP 17808769 A EP17808769 A EP 17808769A EP 3545297 A1 EP3545297 A1 EP 3545297A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- gas mixture
- parameter values
- parameter
- function
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000007789 gas Substances 0.000 claims description 145
- 238000012549 training Methods 0.000 claims description 23
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 description 38
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 24
- 238000001514 detection method Methods 0.000 description 19
- 239000003345 natural gas Substances 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 238000002485 combustion reaction Methods 0.000 description 14
- 239000003570 air Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 238000013459 approach Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- UFHFLCQGNIYNRP-VVKOMZTBSA-N Dideuterium Chemical compound [2H][2H] UFHFLCQGNIYNRP-VVKOMZTBSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
Definitions
- the invention relates to a method for determining a result parameter describing a calorific value and / or a Wobbe index of a gas mixture.
- the invention relates to a determination device for determining this result parameter.
- the operation of combustion devices if it is ensured that not too much energy and thus heat is given off during the combustion of the natural gas in order to prevent damage or heavy wear of these combustion devices. Therefore, it may also be advantageous to take into account a determined calorific value or a Wobbe index of the gas mixture in the control of corresponding combustion devices.
- the Wobbe index is proportional to the calorific value of the gas mixture and inversely proportional to the root of the relative density of the gas mixture in relation to the density of air.
- fuel gases having a similar Wobbe index are interchangeable in cases where the fuel gas is supplied to the constant nozzle pressure combustion process.
- the calorific value or the Wobbe index has been determined primarily by the utility.
- gas chromatographs to the Separate components of the gas mixture and thus to determine the composition of the gas mixture. From the composition of the gas mixture and the known properties of the individual gases, the calorific value or the Wobbe index can be determined.
- gas chromatographs are relatively large and expensive, so that use by the consumer is usually not appropriate. Therefore, several alternative approaches have been developed to determine the calorific values of a gas mixture.
- CMOS sensor can be used to determine the thermal conductivity or a quantity dependent on the heat capacity.
- the density can be deduced with knowledge of the pressure of the gas.
- This measurement method is possible only for a defined volume flow. If gas mixtures are to be measured during operation with variable volumetric flow, this results in considerable additional expenditure in order to produce the measuring conditions for calorific value determination.
- a plurality of further sensors e.g. Pressure sensors necessary.
- Another approach is to measure the speed of sound or density and, in addition, an absorption capacity for infrared radiation of the fuel gas.
- both the measurement of infrared absorption and the measurement of the speed of sound require relatively expensive sensors.
- the invention is therefore based on the object to provide a method for determining a calorific value or a Wobbe index, which can be implemented with less technical effort and thus is particularly suitable for use by the consumer.
- the object is achieved according to the invention by a method of the type mentioned at the outset, which comprises the following steps performed by a determination device:
- the calorific value or the Wobbe index can already be determined with good accuracy from parameter values of two of these gas parameters.
- a clear relationship between the calorific value and the Wobbe index and parameter values of any two of the gas parameters thermal conductivity, thermal diffusivity, thermal capacity and density exist.
- the thermal conductivity is also referred to as thermal conductivity and the thermal conductivity as thermal diffusivity.
- thermal conductivity In a three-dimensional parameter space whose first dimension is assigned to the calorific value or the Wobbe index and whose other dimensions are respectively defined by one of the parameters from the group mentioned, all relevant gases or gas mixtures are thus approximately on a generally curved surface. This area is defined by a corresponding predetermined function. The determination of a corresponding function will be explained in detail later.
- the result parameter can be determined in particular for natural gases or mixtures of natural gases with gases other than gas mixtures.
- the gas mixture may be a natural gas to which hydrogen, higher proportions of at least one hydrocarbon and / or ambient air are added.
- a calorific value determined in accordance with the method according to the invention can be further utilized in order to determine energy consumption from the calorific value and a volume flow of the gas.
- inventive method with Relatively low technical effort to provide gas meters that detect an amount of energy provided or that can provide in addition to a volume associated with the volume consumed calorific value.
- determination device can detect a flow in addition to the parameter values of the gas parameters. This is possible, for example, when using a thermal measuring principle for flow detection, as will be explained in more detail later.
- the function can be specified in the method according to the invention as a function of a training data record which describes parameter values for the two gas parameters and the result parameter for a plurality of gases and / or gas mixtures.
- the training data set may preferably comprise parameter values for more than one hundred, in particular for several hundred gases and / or gas mixtures.
- the function can be determined by fitting a function with a given structure to the parameter values.
- the function can also be determined in the form of an interpolation between a plurality of interpolation points, which are specified by the training data set. Certain scope areas can be defined for the function. For example, the function may be defined as valid only in those areas whose parameter values do not deviate too much from parameter values of a gas or gas mixture defined by the training data set.
- an error signal can be provided. This can be used, for example, to mark certain measurement points in a measurement data store as invalid, to provide information about a malfunction locally or via a data network, or the like.
- the function may, for example, be a polynomial in the parameter values of the two gas parameters as variables, the coefficients of the polynomial being predetermined as a function of the training data set.
- the individual coefficients can be determined, for example, by fitting the polynomial, for example by minimizing a cost function that depends on the deviations of the result parameters specified by the training data set from a respective result parameter calculated for the corresponding gas or gas mixture.
- a polynomial with a total of 16 coefficients can be used, each associated with products of different powers of the two gas parameters.
- coefficients for all combinations of the different powers of the gas parameters can be specified, the powers being integer and have an exponent between 0 and 3.
- a training dataset approximate area was computed that included gas parameter and calorific value parameter values for 370 natural gas, and for nitrogen and air, with the calorific values of nitrogen and air equal to zero.
- the calorific value determined by the function from the values of the gas parameters deviates by a maximum of 6.2% from the calorific value determined by the training data set for the corresponding gas or gas mixture.
- the deviation was greater than 4% for only three gas mixtures and less than 2% for 90% of the gas mixtures.
- the calorific values determined by the function thus agree with the actual calorific values with good accuracy. This is relevant because these two gas parameters can be determined with little technical effort in the context of a flow measurement.
- a maximum error of 2.4% was determined. Apart from a gas mixture, the error is less than 2%. For more than 90% of the gas mixtures even an error of less than 1% was found.
- the training data set may preferably describe parameter values for the two gas parameters and the result parameter for at least one gas or gas mixture that is not exothermic combustible.
- a calorific value of 0 kWh / m 3 can be assumed.
- air as gas mixture and / or nitrogen as gas can be taken into account. Air and nitrogen differ significantly from most natural gases with respect to their gas parameters evaluated in the method according to the invention.
- the method according to the invention is also suitable for determining calorific values or Wobbe indices for complex, ie not only binary, gas mixtures. Therefore, in the method according to the invention, the result parameter for a gas mixture comprising at least three different gases can be determined.
- the gas mixture may comprise methane, ethane, propane, further hydrocarbon-based gases, hydrogen gas, air and / or nitrogen.
- a result parameter for a gas mixture which comprises hydrogen is particularly preferably determined.
- the gas mixture may thus comprise gaseous molecular hydrogen H 2 .
- a determination of calorific values or Wobbe indices for gas mixtures comprising hydrogen is highly relevant.
- Hydrogen is a particularly easy artificially produced gas.
- hydrogen in the context of a power-to-gas process, hydrogen can be produced by electrolysis when excess energy is produced by nonuniformly renewable energy producing devices, such as wind turbines or solar cells. This hydrogen can be fed into a natural gas grid. Due to the distinctly different combustion properties of the hydrogen gas compared to typical natural gas mixtures, this can result in a significantly different calorific value or a significantly different Wobbe index. If the hydrogen content of the supplied gas mixture is varied, it is thus advantageous to record the calorific value or the Wobbe index in order to enable energy consumption-based billing and / or to control a burning process of the gas mixture as a function of the Wobbe index.
- the parameter values for the thermal conductivity and the thermal diffusivity can be detected, the function depending exclusively on these parameter values.
- the parameter values of these two gas parameters are particularly easy to detect by sensors which can also be used for the thermal determination of a flow rate, whereby flowmeters which additionally determine the calorific value or the Wobbe index can be realized particularly easily.
- the parameter values for the two gas parameters are preferably recorded at the same temperature and / or the same pressure. This allows a particularly simple detection of the parameter values.
- the parameter values can be detected by the detection device by a thermal measuring principle.
- a sensor can be used, which comprises a heating element for targeted heating of the gas mixture, and at least two, preferably at least three, temperature sensors.
- a first temperature sensor can be arranged on the heating element or in the region of the heating element. The further temperature sensors may be spaced from the heating element. If the heating element is operated in such a way that a constant heat output is made available, a temperature distribution results in the area around the heating element whose shape depends on the gas parameters of the gas mixture.
- the height of this temperature distribution that is to say in particular the height of the temperature at the first temperature sensor arranged in the region of the heating element, is in this case a measure of the thermal conductivity.
- the gas mixture has a high thermal conductivity, then a large amount of heat can be transported away from the heating element, so that the temperature in the region of the heating element decreases with increasing thermal conductivity.
- the thermal conductivity can be detected for example by a transit time measurement.
- a pulse-like heating can take place. The respective period of time from the heating pulse to the detection of a temperature maximum resulting from the heating pulse at one or more of the temperature sensors spaced apart from the heating element can be detected and from this the thermal conductivity can be determined.
- the heating element is arranged in a flow channel of a flow meter and if temperature sensors spaced from the heating element are used upstream and downstream of the heating element, the asymmetry of the heating element can be used
- Temperature distribution additionally a flow velocity of the gas mixture can be determined.
- the invention relates to a determination device for determining a result parameter which describes a calorific value and / or a Wobbe index of a gas mixture and which is designed to carry out the method according to the invention.
- the detection device can be designed as a flow meter or integrated into such a flow meter.
- a volume flow of the gas mixture can be determined by the flow meter and additionally a calorific value and / or a Wobbe index. This can be used to determine an energy flow through this counter by multiplying the calorific value by the volumetric flow rate.
- Such determined energy consumption and / or the measured volume and / or the calorific values and / or the Wobbe index can be provided to a central device, which can be operated, for example, by a natural gas supplier. If a flow meter is used as the detection device, the detection of the volume as described above can take place according to a thermal measuring principle, but also mechanically, for example by means of a diaphragm gas meter.
- Fig. 1 shows the use of a method for determining a calorific value and a Wobbe index of a gas mixture in the context of determining an energy consumption of a combustion device and the control of this combustion device.
- the procedure is divided into two sections.
- steps S1 to S3 a function is specified, which is used in the subsequent steps in the context of determining the result parameter.
- steps S4 to S11 constitute a measurement and control loop used in the operation of the combustor
- steps S1 to S3 may be independently performed at a previous time.
- these steps can already be carried out prior to the production of a determination device which is used to determine the result parameter, and the resulting function can then be stored in each case in a storage device of the determination device in order to be used by the following steps.
- the function determined in steps S1 to S3 serves to calculate a calorific value or a Wobbe index from parameter values of exactly two gas parameters, in the example shown, from parameter values for the gas parameters thermal conductivity and thermal conductivity.
- both of these result parameters are to be calculated, so that two different functions are predetermined, each of which depends on the thermal conductivity and the thermal diffusivity.
- the function could depend on any two of the gas parameters of thermal conductivity, thermal conductivity, heat capacity, and density.
- step S1 first a structure for these functions is given. This can be done in such a way that initially a respective set of functions is predefined, which additionally depends on a plurality of further parameters in addition to the thermal conductivity and the thermal conductivity. These additional parameters are determined in the following procedure to specify the function.
- a corresponding set of functions can, for example, be specified in the form of a polynomial in the parameter values of the two gas parameters as variables, the coefficients being determined as further parameters in the further course of the process.
- the further parameters are determined as a function of a training data set, which is specified in step S2.
- the training data set describes parameter values for the two gas parameters, ie in the example for the thermal conductivity and the thermal conductivity, and the result parameter, ie the calorific value and / or the Wobbe index.
- the training data set may include this data for more than 100, in particular for several hundred gases and / or gas mixtures. It will be a
- Training data set used which includes the parameter values and the result parameter for both hydrogen and for air and nitrogen, so for two gases that are not exothermic.
- the training data set describes the parameter values and result parameters for a large number of gas mixtures that correspond to available natural gases, ie gas mixtures containing primarily hydrocarbons.
- the resulting function can thus be parameterized so that it can determine calorific values and Wobbe indices with high accuracy for natural gases, to which higher amounts of air, nitrogen and / or hydrogen can be added.
- the further parameters of the set of functions given in step S1 that is to say for example the coefficients of the respective polynomial, are determined as a function of the training data set. This can be done by fitting the function to the training data set, ie by calculating a compensation level as a function. For this purpose, a large number of approaches is known, which is why the corresponding procedure should be presented only roughly.
- an error value can be defined which indicates how much the result parameter determined by applying the function to the two gas parameters deviates from the result parameter specified by the training data set for a specific parameterization of the function.
- a cost function can be composed, for example by calculating an Euclidean norm for these error values, and this cost function can be minimized to determine an optimal approximation area for the training data sets.
- the corresponding parameterization specifies the function to be used.
- the determining function can then be stored on a storage device of a detection device, which is used in the following method steps.
- a corresponding detection device 1 is shown in FIG. The detection device 1 serves to first determine the thermal diffusivity and the thermal conductivity of a gas mixture flowing through the detection device 1.
- a volume flow rate is determined by the detection device 1.
- the detection device 1 comprises a measuring section 2, which is located within a tube 3. Within the measuring section 2, a heating element 4 is arranged centrally, which can be controlled by a controller 5.
- the controller 5 may be formed as a separate controller, but it may also be integrated into a computing device 10.
- the control of the heating element 4 by the controller 5 is typically carried out so that the heating power of the heating element 4 is constant.
- a corresponding detection device 1 can be realized in a particularly simple manner if a heating element 4 with a resistance which is substantially constant in the relevant temperature range is used. In this case, the controller 5 can supply the heating element 4 with constant voltage or current to achieve a constant heating power. However, it is also possible that the controller 5 regulates the heating power to a constant value.
- thermosensor 6 In addition to the heating element 4, two temperature sensors 6, 7 and 8 are arranged in the measuring section 2.
- the temperature sensor 7 is arranged in the region of the heating element 4.
- the two temperature sensors 6, 8 are arranged upstream or downstream of the heating element 4.
- the arrows 9 indicate the flow direction of the gas.
- the measured values of the temperature sensors 6, 7 and 8 are recorded by the calculation device 10. From these measured values, as will be explained in more detail below, the thermal conductivity is determined in step S4, the thermal diffusivity in step S5 and the flow velocity of the gas mixture in step S6.
- step S4 the thermal conductivity of the gas mixture is determined. This exploits that the heating element 4 is operated at a constant heat output. If the thermal conductivity of the gas flowing through the measuring section 2 is large, this means that a large amount of energy is removed from the heating element. Thus, the temperature drops at the heating element, if this is heated with the same heating power. A high temperature at the temperature sensor 7 thus corresponds to a low thermal conductivity, a low temperature of high thermal conductivity. The temperature value at the temperature sensor 7 can thus be used to determine the thermal conductivity. The determination can be made by using a value table with calibration values. It should be noted that the temperature at the temperature sensor 7 obviously also depends on the temperature of the gas mixture flowing through the measuring section 2.
- the detection device 1 is thus used in a gas flow in which the temperature of the inflowing gas mixture can vary greatly, it is advantageous for the temperature of the inflowing gas by another temperature sensor, not shown, which significantly further than the temperature sensors 6, 8 of the Heating element 4 is spaced, to capture and to take into account in the above-described determination of the thermal conductivity.
- the temperature conductivity can be extracted from a transit time measurement in step S5.
- a short heat pulse is applied to the heating element and the time is measured until the temperature reaches the two temperature sensors 6, 8. It is advantageous here if both temperature sensors have mutually different distances from the heating element. If the temperature conductivity of the gas is high, the temperature reaches the two temperature sensors 6, 8 in a shorter time than with a gas mixture with a lower temperature conductivity. The difference between the two transit times can be used to accurately determine the thermal conductivity.
- a value table with calibration values can be used to determine the thermal conductivity from the transit time or the transit time difference or a variable derived therefrom.
- step S6 the flow velocity is determined.
- a flow of the gas mixture through the measuring section 2 leads to an increasing asymmetry of the temperature distribution curve with the flow velocity.
- the flow rate can thus be determined from the temperature difference at the temperature sensors 6, 8.
- step S7 the functions provided in step S3, each depending on the thermal conductivity and the thermal conductivity and calculating the calorific value and the Wobbe index, respectively, are applied to the thermal conductivity determined in step S4 and the thermal conductivity determined in step S5.
- both the Wobbe index of the gas mixture and its calorific value are available.
- the Wobbe index is further processed in step S8 to control a combustion device to which the gas mixture is supplied.
- a gas pressure with which the gas mixture is admitted into a combustion chamber can be adapted in order to react to a change in the supplied gas mixture. In this way, it can be prevented in particular that, when the Wobbe index rises, too high energies are provided in the combustion device which can damage them.
- variations in the combustion process for example temperature changes and / or changes to a provided mechanical energy, can be reduced by controlling the combustion device, in particular the gas pressure, as a function of the Wobbe index.
- the calorific value determined in step S7 is used within the scope of calculating a quantity of energy provided.
- a volume flow is first calculated from the flow velocity of the gas mixture determined in step S6 in step S9. This volume flow is then multiplied by the calorific value in step S10 in order to obtain a quantity of energy provided.
- this determined amount of energy is transmitted via a not separately shown communication device of the detection device 1 to an external device, which may for example be assigned to the energy supplier. Subsequently, the method is repeated from the detection of the parameter values of the two gas parameters and the flow velocity of the gas mixture in steps SA to S6.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016014151.4A DE102016014151A1 (de) | 2016-11-25 | 2016-11-25 | Verfahren zur Ermittlung eines Brennwertes und/oder eines Wobbe-Index eines Gasgemisches |
PCT/EP2017/001347 WO2018095563A1 (de) | 2016-11-25 | 2017-11-16 | Verfahren zur ermittlung eines brennwertes und/oder eines wobbe-index eines gasgemisches |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3545297A1 true EP3545297A1 (de) | 2019-10-02 |
Family
ID=60574513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17808769.8A Pending EP3545297A1 (de) | 2016-11-25 | 2017-11-16 | Verfahren zur ermittlung eines brennwertes und/oder eines wobbe-index eines gasgemisches |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3545297A1 (de) |
CN (1) | CN109964124A (de) |
DE (1) | DE102016014151A1 (de) |
WO (1) | WO2018095563A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112805504B (zh) * | 2018-10-05 | 2024-03-19 | 盛思锐股份公司 | 调节气体混合物的混合比的装置 |
DE102019115973A1 (de) * | 2019-06-12 | 2020-12-17 | Westnetz Gmbh | Messeinrichtung zur bestimmung des brennwerts eines gasstroms in einer gasleitung und gasverteilernetz mit einer solchen messeinrichtung |
KR20220054682A (ko) * | 2019-09-09 | 2022-05-03 | 마이크로 모우션, 인코포레이티드 | 유체 에너지 함량의 라이브 결정을 위한 시스템들 및 방법들 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69014308T3 (de) * | 1989-10-30 | 1998-04-16 | Honeywell Inc | Verbrennungsregelung mit mikromessbrücke. |
AU3055992A (en) * | 1991-10-23 | 1993-05-21 | Niagara Mohawk Power Corporation | On-line combustionless measurement of gaseous fuels fed to gas consumption devices |
DE10122039B4 (de) * | 2001-05-07 | 2010-10-07 | E.On Ruhrgas Ag | Verfahren und Vorrichtung zum Bestimmen des Brennwertes eines Gases |
EP2015056B1 (de) * | 2007-07-07 | 2010-04-07 | Mems Ag | Verfahren und Sensor zur Bestimmung einer brenntechnisch relevanten Größe eines Gasgemisches |
EP3273237B1 (de) * | 2013-05-24 | 2023-11-29 | Mems Ag | Verfahren und messvorrichtung zur bestimmung von physikalischen gaseigenschaften |
DE102014000939A1 (de) * | 2013-06-20 | 2014-12-24 | Hydrometer Gmbh | Verfahren zum Bestimmen wenigstens eines Gasparameters eines strömenden Gases |
ES2926706T3 (es) * | 2013-09-13 | 2022-10-27 | Mems Ag | Procedimiento y sensor para la determinación de características de combustible de mezclas de gases |
CN105606786B (zh) * | 2014-11-14 | 2019-12-24 | Mems股份公司 | 用于确定燃气品质的特定量值的方法和测量装置 |
CN105807027B (zh) * | 2016-03-16 | 2018-11-09 | 新奥科技发展有限公司 | 气体能量计量方法及装置 |
-
2016
- 2016-11-25 DE DE102016014151.4A patent/DE102016014151A1/de not_active Ceased
-
2017
- 2017-11-16 WO PCT/EP2017/001347 patent/WO2018095563A1/de unknown
- 2017-11-16 CN CN201780070754.6A patent/CN109964124A/zh active Pending
- 2017-11-16 EP EP17808769.8A patent/EP3545297A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
CN109964124A (zh) | 2019-07-02 |
WO2018095563A1 (de) | 2018-05-31 |
DE102016014151A1 (de) | 2018-05-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3021117B1 (de) | Verfahren und messvorrichtung zur bestimmung von spezifischen grössen für die gasbeschaffenheit | |
EP3273237B1 (de) | Verfahren und messvorrichtung zur bestimmung von physikalischen gaseigenschaften | |
EP2816328B1 (de) | Verfahren und Durchflussmessgerät zum Bestimmen wenigstens eines Gasparameters eines strömenden Gases | |
EP2015056B1 (de) | Verfahren und Sensor zur Bestimmung einer brenntechnisch relevanten Größe eines Gasgemisches | |
EP0022493B1 (de) | Verfahren und Vorrichtung zur verbrennungslosen Messung und/oder Regelung der Wärmemengenzufuhr zu Gasverbrauchseinrichtungen | |
EP2574918B1 (de) | Mikrothermisches Verfahren und Sensor zur Bestimmung physikalischer Gaseigenschaften | |
EP3545297A1 (de) | Verfahren zur ermittlung eines brennwertes und/oder eines wobbe-index eines gasgemisches | |
DE4326680C1 (de) | Verfahren und Vorrichtung zur Temperaturüberwachung eines elektrischen Generators | |
DE102013105993A1 (de) | Thermische Durchflussmessvorrichtung und Verfahren zur Korrektur eines Durchflusses eines Mediums | |
DE112005002773T5 (de) | Reynolds-Zahl-Korrekturfunktion für einen Massenströmungsraten-Sensor | |
DE102011120899B4 (de) | Verfahren und Verwendung einer Vorrichtung zur Bestimmung des Massenstroms eines Fluids | |
WO2007063114A2 (de) | Vorrichtung zur bestimmung und/oder überwachung des massedurchflusses eines gasförmigen mediums | |
DE112008001378T5 (de) | System zum Abschätzen eines Zustands einer Brennstoffzelle innerhalb einer Ebene und Verfahren zum Abschätzen eines Zustands einer Brennstoffzelle innerhalb einer Ebene | |
EP2378255B1 (de) | Kalibriervorrichtung für Durchflussmessgeräte | |
DE2509344B2 (de) | Verfahren und Anordnung zur automatischen Regelung einer Kessel-Turbinen-Einheit | |
DE10331698B4 (de) | Vorrichtung und Verfahren zur Bestimmung des Durchflusses von dampf- oder gasförmigen Stoffen durch eine Rohrleitung | |
EP2848934B1 (de) | Verfahren und Sensor zur Bestimmung von Brennstoffeigenschaften von Gasgemischen | |
EP3182118B1 (de) | Verfahren und messvorrichtung zur bestimmung von gaseigenschaften mittels korrelation | |
WO2015188808A1 (de) | Verfahren und vorrichtung zur einstellung von konzentrationsverhältnissen von ortho- zu parawasserstoff | |
DE10392699B4 (de) | Hochpräzise Messung und Steuerung von niedrigen Fluiddurchflussraten | |
DE102010054388A1 (de) | Verfahren und Auswertegerät zur bidirektionalen Messung von Strömungsgeschwindigkeiten | |
EP2330347B1 (de) | Verfahren zur Bestimmung des bei der Verbrennung von Brenngas emittierten Kohlenstoffdioxids | |
DE102010018948A1 (de) | Thermischer Massendurchflussmesser mit zusätzlichen Sensormitteln sowie Verfahren zum Betrieb desselben | |
DE2747643A1 (de) | Vorrichtung und verfahren zum messen der brenn- und sauerstoffmenge in einer gasstroemung | |
EP3513178B1 (de) | Gaszähler |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190514 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20220223 |