Download or read book Recommended Practice for Compressed Natural Gas Vehicle Fuel written by Fuels and Lubricants TC 7 Fuels Committee and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compressed Natural Gas (CNG) is a practical automotive fuel, with advantages and disadvantages when compared to gasoline. Large quantities of natural gas are available in North America. It has a higher octane number rating, produces low exhaust emissions, no evaporative emissions and can cost less on an equivalent energy basis than other fuels. Natural gas is normally compressed from 20 684 to 24 821 kPa (3000 to 3600 psig) to increase its energy density thereby reducing its on-board vehicle storage volume for a given range and payload. CNG can also be made from liquefied natural gas by elevating its pressure and vaporizing it to a gas. Once converted it is referred to LCNG.The properties of natural gas are influenced by: (1) source of supply i.e. field, composition or impurities; (2) the processing of natural gas by the production and transmission companies; (3) the regional gas supply, storage, and demand balancing done by distribution companies often in concert with pipeline companies to maintain uninterrupted service throughout the year, e.g., peak shaving with propane-air (see U.S. Bureau of Mines Publication 503); and (4) dispensing site maintenance characteristics i.e. filtration and drying.The Coordinating Research Council (CRC) has published the results of a national compressed natural gas vehicle fuel survey. Information on the properties of distribution system natural gas and its variability has been included in Figure 1, 2, and 3, and can be found in CRC Report No. PC-2-12. Composition can vary hourly under certain operating conditions in certain areas of the country. Thus the data should generally be considered representative for the areas mentioned with due consideration for local variation.Natural gases transported throughout the U. S. are not subject to uniform national standards. Under federal government rules covering interstate sales of natural gas, the U. S. Federal Energy Regulatory Commission (FERC) adjudicates tariffs, placing economic and technical requirements upon natural gases entering interstate commerce. In 2006, FERC issued a policy statement advising stakeholders that: 1Only natural gas quality and interchangeability specifications contained in FERC-approved gas tariffs can be enforced; 2Pipeline tariff provisions on gas quality and interchangeability need to be flexible to allow pipelines to balance safety and reliability concerns; 3Pipelines and their customers should develop gas quality and interchangeability specifications based on technical requirements; 4In negotiating technically-based solutions, pipelines and their customers are strongly encouraged to use the Natural Gas Council Plus (NGC+) Interim Guidelinesas a common reference point for resolving gas quality and interchangeability issues; and 5To the extent pipelines and their customers cannot resolve disputes over gas quality and interchangeability, those disputes can be brought before FERC to be resolved on a case-by-case basis1The NGC+ Interim Guidelines call for natural gas specifications that include: 1A range of plus or minus 4% Wobbe number variation from local historical average gas, or alternatively, established adjustment or target gas for the service territory, subject to: aMaximum Wobbe number limit: 1400 bMaximum higher heating value limit: 1110 Btu/scf 2Additional composition maximum limits: aMaximum butanes+: 1.5 mole percent bMaximum total inerts: 4 mole percent 3EXCEPTION: Service territories with demonstrated experience with supplies exceeding these Wobbe, higher heating value and/or compositional limits may continue to use supplies conforming to this experience as long as it does not unduly contribute to safety and utilization problems of end use equipment.2While the Interim Guidelines provide only guidance for the setting of tariff limits on gas quality, experience has shown that in most cases the Wobbe and higher heating value limits are used in interstate tariffs. Since the bulk of U. S. sales of natural gas fall under FERC jurisdiction, this means that the Interim Guideline limits represent, in most cases, the limits that apply to natural gases received by distribution systems. Intrastate natural gas sales, by contrast, are not within FERC jurisdiction, but customers including utilities receiving gases from both intrastate and interstate sources, for practical purposes, generally receive natural gas that meets the Interim Guidelines.The NGC+ Interim Guidelines address combustion issues associated with natural gases. Separately, FERC considered condensable hydrocarbons in response to a second paper from NGC+.3 No specific actions were recommended by FERC in response to the NGC+ recommendations from this report, which basically recommended translation of historical condensable hydrocarbon experience into more general phase diagram-depicted "cricondentherm hydrocarbon dew point" (CHDP) criteria for higher hydrocarbon mixtures. CHDP criteria help ensure that natural gases of various compositions remain in gaseous state at all operating pressures and all reasonable ambient temperatures.Natural gas is comprised chiefly of methane (generally 88 to 96 mole percent) with the balance being a decreasing proportion of proportion of higher hydrocarbon alkanes such as ethane, propane, and butane. It can also contain nitrogen, water, carbon dioxide, oxygen, sulfur compounds and trace amounts of lubricating oil. At the retail outlet a warning agent, or odorant, is likely present in natural gas.Experience with natural gas vehicles has grown considerably. Fleet and ongoing in-use applications provide a foundation for characterizing gas composition factors that will help to understand gas quality effects on vehicle and overall performance and may cause fundamental operational problems for natural gas vehicles (NGVs). Water content and other corrosion precursors, heavier hydrocarbons, which may condense within the fuel container, particulate matter, oil, and energy content all need to be considered. Condensable hydrocarbons (liquid state) are also of concern in NGV equipment degradation. This Recommended Practice sets minimum requirements for compressed natural gas as a surface vehicle fuel for vehicle, engine, and component durability, operating safety, and design performance over the breadth of vehicle applications intended to utilize this fuel.

Download or read book Recommended Practice for Compressed Natural Gas Vehicle Fuel written by Society of Automotive Engineers and published by . This book was released on 1994 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Standard for Compressed Natural Gas Vehicle Fuel written by Fuels and Lubricants TC 7 Fuels Committee and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compressed Natural Gas (CNG) is a practical automotive fuel, with advantages and disadvantages when compared to gasoline. Large quantities of natural gas are available in North America. It has a higher octane number rating, produces low exhaust emissions, no evaporative emissions and can cost less on an equivalent energy basis than other fuels. Natural gas is normally compressed from 20 684 to 24 821 kPa (3000 to 3600 psig) to increase its energy density thereby reducing its on-board vehicle storage volume for a given range and payload. CNG can also be made from liquefied natural gas by elevating its pressure and vaporizing it to a gas. Once converted it is referred to LCNG.The properties of natural gas are influenced by: (1) source of supply i.e. field, composition or impurities; (2) the processing of natural gas by the production and transmission companies; (3) the regional gas supply, storage, and demand balancing done by distribution companies often in concert with pipeline companies to maintain uninterrupted service throughout the year, e.g., peak shaving with propane-air (see U.S. Bureau of Mines Publication 503); and (4) dispensing site maintenance characteristics i.e. filtration and drying.The Coordinating Research Council (CRC) has published the results of a national compressed natural gas vehicle fuel survey. Information on the properties of distribution system natural gas and its variability has been included in Figure 1, 2, and 3, and can be found in CRC Report No. PC-2-12. Composition can vary hourly under certain operating conditions in certain areas of the country. Thus the data should generally be considered representative for the areas mentioned with due consideration for local variation.Natural gases transported throughout the U. S. are not subject to uniform national standards. Under federal government rules covering interstate sales of natural gas, the U. S. Federal Energy Regulatory Commission (FERC) adjudicates tariffs, placing economic and technical requirements upon natural gases entering interstate commerce. In 2006, FERC issued a policy statement advising stakeholders that: 1Only natural gas quality and interchangeability specifications contained in FERC-approved gas tariffs can be enforced; 2Pipeline tariff provisions on gas quality and interchangeability need to be flexible to allow pipelines to balance safety and reliability concerns; 3Pipelines and their customers should develop gas quality and interchangeability specifications based on technical requirements; 4In negotiating technically-based solutions, pipelines and their customers are strongly encouraged to use the Natural Gas Council Plus (NGC+) Interim Guidelinesas a common reference point for resolving gas quality and interchangeability issues; and 5To the extent pipelines and their customers cannot resolve disputes over gas quality and interchangeability, those disputes can be brought before FERC to be resolved on a case-by-case basis1The NGC+ Interim Guidelines call for natural gas specifications that include: 1A range of plus or minus 4% Wobbe number variation from local historical average gas, or alternatively, established adjustment or target gas for the service territory, subject to: aMaximum Wobbe number limit: 1400 bMaximum higher heating value limit: 1110 Btu/scf 2Additional composition maximum limits: aMaximum butanes+: 1.5 mole percent bMaximum total inerts: 4 mole percent 3EXCEPTION: Service territories with demonstrated experience with supplies exceeding these Wobbe, higher heating value and/or compositional limits may continue to use supplies conforming to this experience as long as it does not unduly contribute to safety and utilization problems of end use equipment.2While the Interim Guidelines provide only guidance for the setting of tariff limits on gas quality, experience has shown that in most cases the Wobbe and higher heating value limits are used in interstate tariffs. Since the bulk of U. S. sales of natural gas fall under FERC jurisdiction, this means that the Interim Guideline limits represent, in most cases, the limits that apply to natural gases received by distribution systems. Intrastate natural gas sales, by contrast, are not within FERC jurisdiction, but customers including utilities receiving gases from both intrastate and interstate sources, for practical purposes, generally receive natural gas that meets the Interim Guidelines.The NGC+ Interim Guidelines address combustion issues associated with natural gases. Separately, FERC considered condensable hydrocarbons in response to a second paper from NGC+.3 No specific actions were recommended by FERC in response to the NGC+ recommendations from this report, which basically recommended translation of historical condensable hydrocarbon experience into more general phase diagram-depicted "cricondentherm hydrocarbon dew point" (CHDP) criteria for higher hydrocarbon mixtures. CHDP criteria help ensure that natural gases of various compositions remain in gaseous state at all operating pressures and all reasonable ambient temperatures.Natural gas is comprised chiefly of methane (generally 88 to 96 mole percent) with the balance being a decreasing proportion of proportion of higher hydrocarbon alkanes such as ethane, propane, and butane. It can also contain nitrogen, water, carbon dioxide, oxygen, sulfur compounds and trace amounts of lubricating oil. At the retail outlet a warning agent, or odorant, is likely present in natural gas.Experience with natural gas vehicles has grown considerably. Fleet and ongoing in-use applications provide a foundation for characterizing gas composition factors that will help to understand gas quality effects on vehicle and overall performance and may cause fundamental operational problems for natural gas vehicles (NGVs). Water content and other corrosion precursors, heavier hydrocarbons, which may condense within the fuel container, particulate matter, oil, and energy content all need to be considered. Condensable hydrocarbons (liquid state) are also of concern in NGV equipment degradation. This standard sets minimum requirements for compressed natural gas as a surface vehicle fuel for vehicle, engine, and component durability, operating safety, and design performance over the breadth of vehicle applications intended to utilize this fuel.

Download or read book Compressed Natural Gas Fuel Use Training Manual written by and published by . This book was released on 1992 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Gas Vehicles written by National Alternative Fuels Training Program at West Virginia University and published by . This book was released on 1997 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Road Vehicles Compressed Natural Gas CNG Fuel Systems Safety Requirements written by British Standards Institute Staff and published by . This book was released on 1913-01-31 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas supply, Natural gas, Vehicles, Compressed gases, Pipe fittings, Filters, Automotive fuels, Pressure control, Gas valves

Download or read book Learning from Experiences with Compressed Natural Gas as a Vehicle Fuel written by John Stephenson and published by . This book was released on 1991 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Road Vehicles written by Malaysia. Jabatan Standard and published by . This book was released on 2011 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Compressed Natural Gas CNG as a Vehicle Fuel written by Daniel F. Minkoff and published by . This book was released on 1984 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Compressed Natural Gas Vehicles Impact Upon the Fire Service written by W. Stephen Long and published by . This book was released on 1991 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject was not experimental in nature; therefore, conclusions were drawn by examining the direction the natural gas industry is heading to make compressed natural gas a major vehicle fuel in this country. The findings indicate that compressed natural gas can be a safe fuel for vehicle use. Recommendations included keeping written standards current, enforcement of those standards, storage containment systems of higher integrity, and properly trained firefighters.

Download or read book American National Standard for Compressed Natural Gas Vehicle Fuel Containers written by American National Standards Institute and published by . This book was released on 2007 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidebook for Evaluating Fuel Choices for Post 2010 Transit Bus Procurements written by and published by Transportation Research Board. This book was released on 2011 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's Transit Cooperative Research Program (TCRP) Report 146: Guidebook for Evaluating Fuel Choices for Post-2010 Transit Bus Procurements is designed to help those considering the deployment of, or conversion to, alternative fuel buses.

Download or read book Evaluation of Compressed Natural Gas CNG Fueling Systems written by and published by . This book was released on 1999 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Road Vehicles written by South African Bureau of Standards and published by . This book was released on 2018 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Standard Specification for Compressed Natural Gas CNG and Liquefied Natural Gas LNG Used as a Motor Vehicle Fuel written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Road Vehicles Compressed Natural Gas CNG Fuel System Components Performance and General Test Methods written by British Standards Institute Staff and published by . This book was released on 1912-05-31 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas supply, Natural gas, Vehicles, Compressed gases, Pipe fittings, Filters, Automotive fuels, Pressure control, Gas valves

Download or read book NIST Handbook written by and published by . This book was released on 1989 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: