Procedure for the Calculation of Gaseous Emissions From Aircraft Turbine Engines (Supersedes By Air1533) PDF Download
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Author: E31Aircraft Engine Gas and Particulate Emissions Measurement
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Languages : en
Pages : 0
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This is a procedure for calculation of gaseous emissions data, specifically, emission index, fuel-air ratio, and combustion efficiency for aircraft turbine engines based on the measurement of carbon monoxide, carbon dioxide, total hydrocarbons, and the oxides of nitrogen. Reference 2.1.1 gives procedures for the measurement of gaseous emissions from aircraft turbine engines. This document includes instructions for the adjustment of the measured concentrations of the constituents of the exhaust for: a. the humidity of the inlet air, b. the carbon dioxide content of the inlet air, c. the interference of carbon dioxide and water on the measured concentrations of carbon monoxide and the oxides of nitrogen, d. the interference of oxygen on the measured concentration of carbon dioxide, e. the efficiency of the converter for changing other oxides of nitrogen to nitric oxide, and f. the basis of measurement (semidry or wet).
Author: E31Aircraft Engine Gas and Particulate Emissions Measurement
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Languages : en
Pages : 0
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This is a procedure for calculation of gaseous emissions data, specifically, emission index, fuel-air ratio, and combustion efficiency for aircraft turbine engines based on the measurement of carbon monoxide, carbon dioxide, total hydrocarbons, and the oxides of nitrogen. Reference 2.1.1 gives procedures for the measurement of gaseous emissions from aircraft turbine engines. This document includes instructions for the adjustment of the measured concentrations of the constituents of the exhaust for: a. the humidity of the inlet air, b. the carbon dioxide content of the inlet air, c. the interference of carbon dioxide and water on the measured concentrations of carbon monoxide and the oxides of nitrogen, d. the interference of oxygen on the measured concentration of carbon dioxide, e. the efficiency of the converter for changing other oxides of nitrogen to nitric oxide, and f. the basis of measurement (semidry or wet).
Author: E31Aircraft Engine Gas and Particulate Emissions Measurement
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Languages : en
Pages : 0
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Aerospace Recommended Practice (ARP) 1533 is a procedure for the analysis and evaluation of the measured composition of the exhaust gas from aircraft engines. Measurements of carbon monoxide, carbon dioxide, total hydrocarbon, and the oxides of nitrogen are used to deduce emission indices, fuel-air ratio, combustion efficiency, and exhaust gas thermodynamic properties. The emission indices (EI) are the parameters of critical interest to the engine developers and the atmospheric emissions regulatory agencies because they relate engine performance to environmental impact.While this procedure is intended to guide the analysis and evaluation of the emissions from aircraft gas turbine engines, the methodology may be applied to the analysis of the exhaust products of any hydrocarbon / air combustor. Some successful applications include: Aircraft engine combustor development rig tests (aviation kerosene fueled) Stationary source combustor development rig tests (natural gas and diesel fueled) Afterburning military engine tests (JP fueled) Internal combustion aircraft engine diagnostics (AVGAS fueled)Each application may be characterized by very different measured emissions levels (parts per million versus percent by volume) but this common approach solves the same basic combustion chemical equation.This revision of ARP1533 assumes that major advances will occur in gas analysis technology in the near future. New instruments will be accepted by the regulatory agencies such that it will no longer be appropriate to specify the measurement method for each chemical species.The matrix method of solving the combustion chemical equation is recommended because of all the potential variations in exhaust gas measurement requirements. Changes in the fuel type, addition of diluents, addition of measured species, and options for wet or dry basis measurements are most easily handled by revising individual matrix row equations. Matrix solution software is widely available on personal computers. However, derivation of the algebraic solution of the chemical equation is retained for traceability to previous versions of this document. New sections have been added to this document that pertain to data quality checks, measurement uncertainty, and water content calculations.
Author: E31Aircraft Engine Gas and Particulate Emissions Measurement
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ISBN:
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Languages : en
Pages : 0
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Author: E-31G Gaseous Committee
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Category :
Languages : en
Pages : 0
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This SAE Aerospace Recommended Practice (ARP) describes the continuous sampling and analysis of gaseous emissions from aircraft gas turbine engines. The measured gas species include carbon monoxide (CO), carbon dioxide (CO2), nitric oxide (NO), nitrogen dioxide (NO2), hydrocarbons (HC) and water vapor (H2O). This ARP excludes engine operating procedures and test modes, and is not intended for in-flight testing, nor does it apply to engines operating in the afterburning mode.It is recognized that there will probably be major advances in the gas analysis measurement technology. It is not the intent of this ARP to exclude other analysis techniques, but to form the basis of the minimum amount of conventional instruments (those in common industry usage over the last fifteen years) required for the analysis of aircraft engine exhaust. It is the responsibility of the analyst to demonstrate the alternative measurement technology has comparable (or better) performance than the techniques described in this ARP.The measurement of other exhaust gas species is beyond the scope of this ARP.It should be noted the measurement of oxygen (O2) is generally accepted as essential for assessing data quality, but is not covered by this ARP. Sulfur dioxide (SO2) is normally not measured using conventional systems but is calculated from fuel sulfur content. Again this is not covered by this ARP. Define the set point temperature range of the hydrocarbon analyzer.
Author: E-31G Gaseous Committee
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Category :
Languages : en
Pages : 0
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Author: NAVAL AIR REWORK FACILITY NORTH ISLAND CA AIRCRAFT ENVIRONMENTAL SUPPORT OFFI CE.
Publisher:
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Category :
Languages : en
Pages : 311
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For test cells, regional and state air pollution control agencies require that naval air installations obtain first, a permit to construct, and then a permit to operate. To apply for permits, personnel responsible for operating the test cells need to know the amounts of gaseous and particulate emissions formed during engine testing. This handbook shows how to estimate the gaseous emissions of carbon monoxide, oxides of nitrogen and hydro carbons formed during the operation of gas turbine engines. For each power setting of the engine, the estimation of total emissions needs: 1) a ratio of the contaminant formed to the amount of fuel used (the so-called emission index); 2) the duration of the operation; and 3) the fuel flow rate. Of these, the emission index is the most difficult to find. This handbook furnishes summary tables of representative emission indexes, at various power settings, for the gas turbine engines most likely to be operated at naval air installations. These tables also include fuel flow rates. Thus, anyone knowing the duration of the power settings can estimate the total gaseous emissions from various aircraft engines. The discussion of the emission index includes instructions on how to calculate it using both computers and small programmable calculators. (edc).
Author: Society of Automobile Engineers
Publisher:
ISBN:
Category : Aircraft exhaust emissions
Languages : en
Pages : 19
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ISBN: 9789292315931
Category : Aircraft exhaust emissions
Languages : en
Pages : 50
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Author:
Publisher:
ISBN:
Category : Aircraft exhaust emissions
Languages : en
Pages : 23
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Author: E-31G Gaseous Committee
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ISBN:
Category :
Languages : en
Pages : 0
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