© 2018 Elsevier Ltd. All rights reserved. To predict the WI, MN, and component composition, a data set that consists of WI, MN, thermal conductivity and sound velocity of the gaseous fuel mixture as a function of its temperature, pressure and composition, was created.
The specified gas is suitable for Wärtsilä gas and dual fuel engines. This means that you cannot reply to this topic. This study describes a fuel quality prediction strategy that predicts the fuel quality parameter and component composition of Renewable Natural Gas (RNG) containing CH4, C2H6 and CO2. Wobbe number is a combustion index for gases. If a gas mixture has a methane number of 80, its knock resistance is equivalent to that of a gas comprised of 80% methane and 20% hydrogen.
Prediction of composition of a gaseous fuel mixture. Wärtsilä is a global leader in smart technologies and complete lifecycle solutions for the marine and energy markets. The calculation tool is owned by Wärtsilä and is made for customer use and is for guidance only. MN 70 MN 80. Pure methane has a Wobbe number of 1363; natural gas as piped to homes in the United States typically has a Wobbe number between 1310 and 1390.” Equipment is rated to operate over a specified Wob-be Index range and, in some cases, provides an adjustment that corresponds to the Wobbe Index. Methane number vs Wobbe Index (25/0) of LNG from different supplier (based on average composition for 2013 [1] and MWM calculation method [11]). The Wobbe Index (WI) and methane number (MN) are the natural gas quality indicators used. Wärtsilä Single Stage Desalination Systems, Wärtsilä Horizontal inner Tube Evaporators, Wärtsilä Cargo Handling for small LNG Carriers, Wärtsilä Cargo Handling System for Ethylene/Multi Gas Carrier, Wärtsilä Cargo Handling System for Fully Pressurized Gas Carrier, Wärtsilä Cargo Handling System for Fully Refrigerated Gas Carriers, Wärtsilä Cargo Handling System for Semi Refrigerated Gas Carriers, Wärtsilä Inert Gas Generators for Gas Carriers, Wärtsilä Inert Gas Generators for Tankers, LNG Plants – Mini Scale Liquefaction Technology, LNG Plants – Small Scale Liquefaction Technology, Wärtsilä Whessoe LNG & FLNG Tank Gauging System, Communication systems for connectivity solutions, Communication systems for connectivity solution, Wärtsilä NACOS Platinum Solid State S-Band Radar, Wärtsilä GNSS/(D)GNSS R5 Navigation System, Remote Monitoring and Assistance System (RMS), Wärtsilä Coastal and Inland Waterway Propellers, Wärtsilä Underwater Mountable Steerable Thrusters, Wärtsilä water lubricated stern tube seals, Wärtsilä Sternguard In-water serviceable seal, Wärtsilä oil lubricated sterntube bearings, Wärtsilä water lubricated stern tube bearings, Wärtsilä Membrane BioReactor (MBR) Systems, Wärtsilä retrofit RTC series super trident sewage treatment plant, Wärtsilä Liquid Cargo Handling Simulator (LCHS 5000 TechSim), Wärtsilä NTPRO 5000 simulator R&D Applications, Wärtsilä Search and Rescue Operations Simulator, Wärtsilä Tug, Mooring and Inland Operations, Wärtsilä Vessel Traffic Systems simulators, Wärtsilä 34SG grid stability / emergency gas power plant, Wärtsilä 34DF grid stability / emergency multi-fuel power plant, Wärtsilä 32 grid stability / emergency liquid fuel power plant, Gas Turbine for Power Generation: Introduction, Combustion Engine for Power Generation: Introduction, Combined Cycle Plant for Power Generation: Introduction, Combustion Engine vs Gas Turbine: Startup time, Combustion Engine vs. Gas Turbine: Part Load Efficiency and Flexibility, Combustion Engine vs Gas Turbine: Pulse load efficiency and profitability, Combustion Engine vs Gas Turbine: Derating due to ambient temperature, Combustion Engine vs Gas Turbine: Ramp rate, Combustion Engine vs Gas Turbine: Fuel Flexibility, Combustion Engine vs Gas Turbine: Water consumption, Combustion Engine vs Gas Turbine: Advantages of modularity, Tornio Manga LNG Terminal, Tornio, Finland, Eklutna Generation Station Palmer, Alaska, USA, Port Westward Unit 2, Portland, Oregon, USA, Woodland 3 Generation Station, Modesto, California, USA, AGL Energy Limited, Australia Barker Inlet Power Station, Australia, Policy on human rights, equal opportunities and fair employment practices, Cleaner water and lower water consumption. Density 0.6114 0.6211 0.0696 – Higher combustion velocity – Higher flame temperature in stoichiometric combustion To predict the WI, MN, and component composition, a data set that consists of WI, MN, thermal conductivity and sound velocity of the gaseous fuel mixture as a function of its temperature, pressure and composition, was created.
same Wobbe number will deliver the same amount of heat.
This might be of use: I am quite certain you will easily find the answers to your questions by doing a Google search. Methane, which has a high knock resistance, is given an index value of 100. By emphasising sustainable innovation, total efficiency and data analytics, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers. https://doi.org/10.1016/j.fuel.2018.03.074. The results of the study including the data set and the prediction model that can accurately estimate the WI, MN, and gas composition, is presented in this paper. By continuing you agree to the use of cookies.
Transport Phenomena Dimensionless Number & Scale Up, This is not recommended for shared computers.
Through a regression analysis of the data set, a model that estimates the WI, MN and composition of the gaseous fuel mixture from its physical properties (temperature, pressure, thermal conductivity and sound velocity), was developed. Copyright © 2020 Elsevier B.V. or its licensors or contributors.
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.. Methane number vs Wobbe Index of LNG from different countries and amounts ex ported worldwide (based on average composition for 2013 and MWM calculation method for MN).
Onsite measurement of the gas properties in a renewable natural gas (RNG) fuel is necessary to ensure an expected level of quality, which must be maintained for better combustion efficiency. Wärtsilä Methane Number Calculator We have developed this tool for ship owners and operators to calculate the Methane Number of the fuel gas. The calculation result indicates whether or not the given gas quality is suitable for use in Wärtsilä gas and dual fuel engines. We use cookies to help provide and enhance our service and tailor content and ads.
2 replies to this topic Share this topic: | More #1 stu stu. If is the higher heating value, or higher calorific value, and is the specific gravity, the Wobbe Index, , is defined as: Members 72 posts Posted 31 March 2008 - 06:19 AM. Effect on LNG supplies worldwide Figure 4 shows the methane number of most of the LNG supplies worldwide,including the relationship to
It it the calorific value of the gaseous fuel divided by its specific gravity (relative to air).
The Wobbe Index (WI) and methane number (MN) are the natural gas quality indicators used. See for example. Changes in the tool is reserved at any time. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Chemical Engineering Plant Cost Index Cepci Of 2016 And 2017 ? Hydrogen, which burns quickly relative to methane, has a low knock resistance and is given the index value of 0.
Gold Member. Prediction of WI and MN of a gaseous fuel mixture. Predicting Wobbe Index and methane number of a renewable natural gas by the measurement of simple physical properties.
Methane Number & Wobbe Index Started by stu, Mar 31 2008 06:19 AM This topic has been archived. 15 NG / Methane Quality Requirements Parameter Method Min Max Comment Methane Number (high grade) The prediction model coupled with a sensor enables the combustion of gas efficiently. Download : Download high-res image (159KB)Download : Download full-size image. Hydrogen main combustion properties vs natural gas (pipeline/LNG origin): Influence on hydrogen on gas quality Workshop CEN-ENTSOG, Brussels Pipeline NG LNG H 2 Hs (MJ/m3) 39.67 41.26 12.10 WI (MJ/m3) 50.73 52.35 45.88 Rel. Low Flow in Pipes- posted in Ankur's blog. Wobbe index for common fuel gases - propane, butane, methane and more Sponsored Links The Wobbe Index indicates the interchange ability of a fuel gas and is the best indicator of similarity between natural gas and a specific propane-air mixture. Check out the latest downloads available in the File Library.
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