C %%EOF You also have the option to disable these cookies. 0000002234 00000 n I am trying to model a Gas system in the Flomaster version 9.1. [5], CS1 maint: multiple names: authors list (, Learn how and when to remove this template message, "The Wobbe Index and Natural Gas Interchangeability", http://www.biogasmax.eu/media/d3_3v2biogasmax_iwes_v2f_nov2010__052078600_1109_10022011.pdf, https://en.wikipedia.org/w/index.php?title=Wobbe_index&oldid=961934456, Articles needing additional references from February 2010, All articles needing additional references, Creative Commons Attribution-ShareAlike License, This page was last edited on 11 June 2020, at 05:43. When the Wobbe Index of the replacement fuel is too high the fuel it will deliver too much energy and will likely to require more oxygen for complete combustion. Family 1 covers manufactured gases, family 2 covers natural gases (with high and low ranges) and family 3 covers liquefied petroleum gas (LPG). , Inefficient combustion - Failure to extract the maximum energy from the fuel. \text{MJ}/\text{Sm}^{3}. With its high-value products and intelligent solutions, COSA Xentaur delivers robust, cost effective instrumentation systems exceeding customer measurement requirements. 13.2.5.4 Calorific value. All Rights Reserved. This can result in the following negative effects: Where the Wobble index of the replacement fuel is too low the fuel will not deliver enough energy. {\displaystyle \rho _{air,STP}} Of these cookies, cookies classified as necessary are stored in the browser as they are essential for the functioning of the website's basic functions. These applications will - due to browser restrictions - send data between your browser and our server. It is necessary to bear in mind other criteria while determining the plenty substitution of a fuel by other, different of the one used to adjust the burning system. 5% Modified Wobbe Index limit. es: combustible Ãndice de Wobbe de gases. 0000001333 00000 n We also use cookies. The website cannot function properly without these cookies. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. is the molar mass of the gas and The Wobbe index is expressed in MJ/Nm³ (or sometimes in BTU/scf). The Wobbe Index is defined as WI=CV [divided by] SG[0.5], where CV is the calorific value (higher heating value, HHV) of the fuel and SG is the fuel’s specific gravity. The LHV Wobbe Index Calorimetric System is available for any type of field installation: The standard Scope of Supply of each LHV Wobbe Index Calorimetric System is typically composed by. {\displaystyle \rho _{STP}} {\displaystyle I_{W}} The Wobbe Index (WI) or Wobbe number is an indicator of the interchangeability of fuel gases such as natural gas, liquefied petroleum gas (LPG), and town gas and is frequently defined in the specifications of gas supply and transport utilities. There are several limitations of the Wobbe index that need to be considered separately: The below table gives some approximate Wobbe index for common fuel gases. Some of our calculators and applications let you save application data to your local computer. representativeness of the process gas and fastest analysis time. G V P Glass and porcelain factories (furnaces & ovens control), Mixing and/or blending of gas streams with variable compounds, Sample Probe, fully customized in accordance with Process & Design requirements, Sample line, engineered to guarantee the best, Conditioning System, engineered and made in accordance to any different process plant with different gases and different level of dirtiness, Analysis Section based on stand-alone analyser or integrated system, suitable for Safe Area or Haz Area, Validation Section based on pressurized bottles and pressure reduction system, also with remote control, I/O , HMI interface, RTU….according to customer/project requirements, Our Analysers perform the analysis in 5 seconds, not minutes like GC or fast GC, The Analysis is done exactly by theoretical definition, there is no need to “adjust” or to do “field calibration”, No catalyst at all. Soc. third parties that help us analyze and understand how this website is used. The Wobbe index is the ratio of the specific energy of a gas to its relative flow rate as shown by its constituent components: By determining the ratio of the energy content of the fuel gas along with the relative mass flow we arrive at a number proportional to the energy delivered to a burner or turbine. Google use cookies for serving our ads and handling visitor statistics. All compartments are easily accessible through separate doors on the front side of the enclosure. Since the Wobbe index relates heating characteristics of blended fuel gases it can be used to obtain … The COSA 9610™ has no moving parts and consequently, maintenance requirements are low. M As a reliable partner, COSA Xentaur creates trustful relationships to help its customers in virtually all industries to be more successful in implementing innovative measurement solutions. LHV and specific gravity readings from the gas chro-matograph are used to regulate the amount of It provides the best field instrumentation for vertical solutions, reliable System Integrations for both Emissions and Processes, and has a skilled Service Team always ready for action…and more! Sample Composition. Stoich Air Fuel Ratio (Dry): Stoich Air Fuel Ratio (Dry) 1 Lean burn methane number calculated without diluents. The fuel gases include natural gas, liquefied petroleum gas (LPG) and town gas. trailer An additional CO 2 measurement allows the determination of mean molar mass and specific density of the sample probe. In the case of natural gas (molar mass 17 g/mol), the typical heating value is around 39 MJ/Nm³ (1,050 BTU/scf) and the specific gravity is approximately 0.59, giving a typical Wobbe index of 51 MJ/Nm³ (1,367 BTU/scf). With its high-value products and intelligent solutions, COSA Xentaur delivers robust, cost effective instrumentation systems exceeding customer measurement requirements. The Wobbe Index is a measure of the interchangeability of fuel gases and their relative ability to deliver energy. Wobbe index is an indicator of the interchangeability of fuel gases. Calorimeter Measurement Principle (Residual Oxygen Measurement) The can result in the following negative effects: Plant Engineer's Reference Book, Second Edition. The Modified Wobbe Index is a calculated measurement of volumetric energy content of fuel and is directly related to the fuel temperature and lower heating value (LHV). S 0000356222 00000 n While the fittings, tubing, JBs and miscellaneous devices are purchased in accordance with customer/project approved vendor list, REINEKE GmbH is our specific partner since ’80 for the main item: the analyser itself. With the use of proper sample conditioning, the COSA 9610™ can operate unattended for several months. The cabinet is suitable for wall mounting or rack mounting. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. © 2020 COSA Xentaur. Its portfolio ranges from dew point measurement solutions, analytical laboratory equipment, NMR technology, WOBBE and BTU analyzers. i Only emails and answers are saved in our archive. Reineke has engineered and built 2 different families of analysers, named WI and RBM 2000: © 2017 Tecnova HT srl | Via San Giovanni sul Muro, 18 | 20121 Milano (MI), Italy | P.IVA 11058740157 | Iscritto alla CCIAA di Milano REA MI – 1432271 | Cap. r We don't collect information from our users. Its portfolio ranges from dew point measurement solutions, analytical laboratory equipment, NMR technology, WOBBE and BTU analyzers. The measurement principle of the Hobré Instruments Wobbe Index analyser is based on the measurement of residual oxygen after catalytic combustion of the flare or fuel gas. 0 The COSA 9610™ Wobbe Index Meter's measuring principle is based on the analysis of the oxygen content in the flue gas after combustion of the sample. The analyzer cabinet has three compartments: Maintenance AddThis use cookies for handling links to social media. Reactive Components - The presences of reactive components like nitrogen, carbon monoxide and alkenes may cause problems for fuel system components.
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