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Author: T. K. H. (Tai Kwong Henricus) ChengPublisher: National Library of Canada
ISBN: 9780315299184
Category : Gas as fuel
Languages : en
Pages : 134
Book Description
An Experimental Study of the Rich Flammability Limits of Some Gaseous Fuels and Their Mixtures in Air [microform]
![An Experimental Study of the Rich Flammability Limits of Some Gaseous Fuels and Their Mixtures in Air [microform] PDF](https://books.google.com/books/content/images/frontcover/eP1tAAAACAAJ?fife=w80-h100)
Author: T. K. H. (Tai Kwong Henricus) ChengPublisher: National Library of Canada
ISBN: 9780315299184
Category : Gas as fuel
Languages : en
Pages : 134
Book Description
An Experimental Study of the Lean Flammability Limits of Some Gaseous Fuels and Their Mixtures [microform]
![An Experimental Study of the Lean Flammability Limits of Some Gaseous Fuels and Their Mixtures [microform] PDF](https://books.google.com/books/content/images/frontcover/xWsWywAACAAJ?fife=w80-h100)
Author: Soon Loke BoonPublisher: National Library of Canada
ISBN: 9780315092266
Category : Carbon monoxide
Languages : en
Pages : 102
Book Description
Determination of Lower Flammability Limits of Mixtures of Air and Gaseous Renewable Fuels at Elevated Temperatures and Pressures
Author: Daniel J. JaimesPublisher:
ISBN: 9780355308600
Category :
Languages : en
Pages : 148
Book Description
Experimental studies of lean flammability limits (LFLs) for methane, hydrogen, carbon monoxide, in addition to mixtures of these gases (i.e. CH 4/H2, H2/CO, and CH4/CO2) were performed at temperatures up to 200° C and pressures up to 9 bar. ASTM Standard E918 (1983) provided the framework for tests at these elevated conditions, using a one-liter pressure-rated test cylinder in which the fuel-air mixtures were prepared and then ignited. Flammability is determined using a 7% and 5% pressure rise criterion per the ASTM E918 and European EN 1839 standards, respectively. The LFLs for each gas and gas mixture are found to decrease linearly with increasing temperature in the temperature range tested. The LFLs of hydrogen and mixtures containing hydrogen are observed to increase with an increase in the initial pressure, whereas the LFLs of all other mixtures exhibit a negligible dependence on pressure. For mixtures, predicted LFL values obtained using Le Chatelier's mixing rule are fairly consistent with the experimentally determined values near ambient conditions, however it is not recommended for use at elevated pressure and/or temperature. The purpose for characterizing the flammability limits for these gaseous mixtures is to extend the results to developing appropriate procedures for the safe industrial use of renewable gases, such as bio-derived methane, biogas composed mainly of methane and carbon dioxide, and renewably derived syngas which contains large quantities of hydrogen and carbon monoxide gas.
Limits of Flammability of Gases and Vapors
Author: Hubert Frank CowardPublisher:
ISBN:
Category : Combustion
Languages : en
Pages : 176
Book Description
Flammability Limits of Gaseous Fuel-air Mixtures Under Flow Conditions
Author: George William GurrPublisher:
ISBN:
Category : Air flow
Languages : en
Pages : 152
Book Description
Canadiana
Author: Limits of Inflammability of Gases and Vapors
Author: Hubert Frank CowardPublisher:
ISBN:
Category : Combustion
Languages : en
Pages : 108
Book Description
Rich Flammability Limits in CH3OH/CO/diluent Mixtures
Author: Mary N. Sandia National Labs Bui-Pham (Combustion Research Facility [email protected])Publisher:
ISBN:
Category : Chemical plants
Languages : en
Pages : 12
Book Description
This research, a joint project between Sandia National Laboratories/California and Dow Chemical Company/Midland, is intended to examine existing flame modeling capability developed at Sandia to model experimental data for rich flammability limits. System studied is methanol/carbon monoxide/diluent mixtures, where the diluent is either nitrogen or carbon dioxide at pressures of 1, 11, and 21 atm, respectively. Critical oxygen concentration needed to sustain a flame was measured in a spherical vessel with a central ignition source for several mixtures and pressures. Burning velocities of 1-D, planar, freely propagating premixed flames were calculated to determine minimum oxygen concentration required for these flames to propagate. This minimum O[sub 2] concentration was found to be consistently larger than that observed in experiments; however, effects of pressure and diluent composition agreed well with experimental data. Attempts were made to model the spherical vessel experiment directly, which resultd in qualitative agreement with experimental data and steady flame predictions. In addition, the rich flammability limit was calculate for pure methanol-air flames to be at an equivalence ratio of [approximately] 2.1, and extincton occurs at K[sub ex] =1670 sec[sup [minus]1] for the opposed-flow, strained, stoichiometric methanol-air case.
Rich Flammability Limits in CH3OH/CO/diluent Mixtures
Author: Mary N. Bui-PhamPublisher:
ISBN:
Category : Chemical plants
Languages : en
Pages : 22
Book Description
This research, a joint project between Sandia National Laboratories/California and Dow Chemical Company/Midland, is intended to examine existing flame modeling capability developed at Sandia to model experimental data for rich flammability limits. System studied is methanol/carbon monoxide/diluent mixtures, where the diluent is either nitrogen or carbon dioxide at pressures of 1, 11, and 21 atm, respectively. Critical oxygen concentration needed to sustain a flame was measured in a spherical vessel with a central ignition source for several mixtures and pressures. Burning velocities of 1-D, planar, freely propagating premixed flames were calculated to determine minimum oxygen concentration required for these flames to propagate. This minimum O[sub 2] concentration was found to be consistently larger than that observed in experiments; however, effects of pressure and diluent composition agreed well with experimental data. Attempts were made to model the spherical vessel experiment directly, which resultd in qualitative agreement with experimental data and steady flame predictions. In addition, the rich flammability limit was calculate for pure methanol-air flames to be at an equivalence ratio of [approximately] 2.1, and extincton occurs at K[sub ex] =1670 sec[sup [minus]1] for the opposed-flow, strained, stoichiometric methanol-air case.
Rich Flammability Limits in CH3OH
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
This research, a joint project between Sandia National Laboratories/California and Dow Chemical Company/Midland, is intended to examine existing flame modeling capability developed at Sandia to model experimental data for rich flammability limits. System studied is methanol/carbon monoxide/diluent mixtures, where the diluent is either nitrogen or carbon dioxide at pressures of 1, 11, and 21 atm, respectively. Critical oxygen concentration needed to sustain a flame was measured in a spherical vessel with a central ignition source for several mixtures and pressures. Burning velocities of 1-D, planar, freely propagating premixed flames were calculated to determine minimum oxygen concentration required for these flames to propagate. This minimum O2 concentration was found to be consistently larger than that observed in experiments; however, effects of pressure and diluent composition agreed well with experimental data. Attempts were made to model the spherical vessel experiment directly, which resultd in qualitative agreement with experimental data and steady flame predictions. In addition, the rich flammability limit was calculate for pure methanol-air flames to be at an equivalence ratio of (approximately) 2.1, and extincton occurs at K{sub ex} =1670 sec−1 for the opposed-flow, strained, stoichiometric methanol-air case.