A Study of the Effects of Natural Gas Composition on Engine Performance PDF Download
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Author: Kevin Jones
Publisher:
ISBN:
Category : Internal combustion engines
Languages : en
Pages : 19
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Book Description
Author: Kevin Jones
Publisher:
ISBN:
Category : Internal combustion engines
Languages : en
Pages : 19
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Book Description
Author: K. Jones
Publisher:
ISBN:
Category :
Languages : en
Pages : 19
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
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Author: Michael S. Graboski
Publisher:
ISBN:
Category : Gas as fuel
Languages : en
Pages : 26
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Book Description
The purpose of this test program was to determine the effect of natural gas composition on regulated emissions and performance of a Cummins B5.9G engine. This engine is a lean-burn, closed loop control, spark ignited, dedicated natural gas engine. Testing was conducted at 5,280 ft above sea level. This engine was thought to represent the state-of-the-art in production lean-burn natural gas engine technology at the time the test program was initiated. Five different natural gas fuels were evaluated. Methane content ranged from 76.9 to 90.3% and inerts content from 3.6 to 17.3%. The engine was found to operate well on all gases and net BTU based fuel economy was not effected by gas composition. CO and PM emissions were unaffected by gas composition. NOX emissions were also unaffected. THC emissions trended downwards with increasing fuel heating value but no such trend was observed for NMHC. Emissions from this engine were below all current or proposed standards for heavy duty engines on all fuels tested.
Author:
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ISBN:
Category :
Languages : en
Pages : 26
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Natural gas is composed primarily of methane with small amounts of higher hydrocarbons and diluents, which vary by region and over time. Compositions of natural gas from domestic and worldwide sources were surveyed with respect to content of higher hydrocarbons and diluents. The survey showed slight compositional variability between most of the gases, with a small fraction of them containing significantly larger contents of higher hydrocarbons than the mean. As gas-fired turbines will be used for power generation all over the world, they will need to tolerate operation with fuels with a wide variety of compositions, particularly with respect to the concentration of higher hydrocarbons and diluents. Subscale catalytic combustion modules typical of those used in gas turbine power generation with ultra low emissions of pollutants were tested in a subscale test system with natural gas alone and with added known levels of hydrocarbon compounds and diluents. The range of compositions tested contained the range observed in the survey. Test results were used to calculate the effect of composition on catalyst performance. The compositional variability is of little consequence to the catalyst for most of the gases in the survey, including nearly all of the gases delivered in the U.S. To accommodate the remaining gases, the catalyst inlet temperature must be lowered to maintain combustor durability. These results support commercial acceptance of catalytic combustion systems for use in natural gas fired turbines in distributed power generation with ultra low NO(subscript x) emissions.
Author:
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ISBN:
Category :
Languages : en
Pages : 20
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Effects of variations in natural gas composition on autoignition of natural gas under direct-injection (DI) diesel engine conditions were studied experimentally in a constant-volume combustion vessel and computationally using a chemical kinetic model. Four fuel blends were investigated: pure methane, a capacity weighted mean natural gas, a high ethane content natural gas, and a natural gas with added propane typical of peak shaving conditions. Experimentally measured ignition delays were longest for pure methane and became progressively shorter as ethane and propane concentrations increased. At conditions characteristic of a DI compression ignition natural gas engine at Top Dead Center (CR=23:1, p = 6.8 MPa, T = 1150K), measured ignition delays for the four fuels varied from 1.8 ms for the peak shaving and high ethane gases to 2.7 ms for pure methane. Numerically predicted variations in ignition delay as a function of natural gas composition agreed with these measurements.
Author: Robert Abader
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Sivasubramanian Thiagarajan
Publisher:
ISBN:
Category : Fuel
Languages : en
Pages : 266
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Author: Kalyan Kumar Srinivasan
Publisher: Springer
ISBN: 9811333076
Category : Technology & Engineering
Languages : en
Pages : 428
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Book Description
This book covers the various advanced reciprocating combustion engine technologies that utilize natural gas and alternative fuels for transportation and power generation applications. It is divided into three major sections consisting of both fundamental and applied technologies to identify (but not limited to) clean, high-efficiency opportunities with natural gas fueling that have been developed through experimental protocols, numerical and high-performance computational simulations, and zero-dimensional, multizone combustion simulations. Particular emphasis is placed on statutes to monitor fine particulate emissions from tailpipe of engines operating on natural gas and alternative fuels.
Author: Byoung Hyouk
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages :
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