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Experimental Investigation of the Effect of the Excess Fuel Coefficient on the Electrical Conductivity of Potassium-Seeded Hydrocarbon Fuel Combustion Products; 042d 041a 0421 041f 0414

Abstract

An experimental study was carried out on the relation between ionization of the potassium seed and the composition of the combustion products of two hydrocarbon fuels, methane and benzine. The composition of the combustion products could be varied by changing the excess fuel coefficient for the combustion mixture. Measurements were carried out at various fixed temperatures in the range 1850-3000 Degree-Sign K (total pressure 1 atm). The temperature was kept constant (by diluting the combustion products with nitrogen). The experimental data obtained for the conductivity correspond to a potassium seed partial pressure of 1%. In the high temperature range (with benzine as fuel) measurements were carried out directly with 1% seeding, while at low temperatures (with methane as fuel) measurements were carried out for 3 x 10{sup -2}% seeding and the results extrapolated to 1% seeding. Resonance circuit and radiowave ({lambda} = 0.8 cm) damping methods were adopted in making the measurements. The temperature of the combustion products was measured by sodium D-line reversal. The measurements showed that the electrical conductivity of the combustion products with potassium seeding decreases as the excess fuel coefficient is reduced. At higher excess fuel coefficients this decrease is only slight. A sharp decrease in  More>>
Authors:
Gol'denberg, S. A.; Zimin, Je. P.; Levlev, V. N.; Popov, V. A. [1] 
  1. Energeticheskij Institut Im. G.M.Krzhizhanovskogo, Moskva, USSR (Russian Federation)
Publication Date:
Nov 15, 1968
Product Type:
Conference
Report Number:
IAEA-SM-107/155
Resource Relation:
Conference: Symposium on Magnetohydrodynamic Electrical Power Generation, Warsaw (Poland), 24-30 Jul 1968; Other Information: 3 refs., 1 fig.; Related Information: In: Electricity from MHD, 1968. Vol. IV. Open-Cycle MHD. Proceedings of a Symposium on Magnetohydrodynamic Electrical Power Generation| 766 p.
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMBUSTION; COMBUSTION PRODUCTS; COMPARATIVE EVALUATIONS; ELECTRIC CONDUCTIVITY; ELECTRONS; FUELS; HYDROXYL RADICALS; LIGROIN; METHANE; MIXTURES; NITROGEN; PARTIAL PRESSURE; POTASSIUM; POTASSIUM HYDROXIDES; RADIOWAVE RADIATION; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0400-1000 K
OSTI ID:
22200086
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
Russian
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13M4375020909
Submitting Site:
INIS
Size:
page(s) 2239-2247
Announcement Date:
Feb 27, 2014

Citation Formats

Gol'denberg, S. A., Zimin, Je. P., Levlev, V. N., and Popov, V. A. Experimental Investigation of the Effect of the Excess Fuel Coefficient on the Electrical Conductivity of Potassium-Seeded Hydrocarbon Fuel Combustion Products; 042d 041a 0421 041f 0414. IAEA: N. p., 1968. Web.
Gol'denberg, S. A., Zimin, Je. P., Levlev, V. N., & Popov, V. A. Experimental Investigation of the Effect of the Excess Fuel Coefficient on the Electrical Conductivity of Potassium-Seeded Hydrocarbon Fuel Combustion Products; 042d 041a 0421 041f 0414. IAEA.
Gol'denberg, S. A., Zimin, Je. P., Levlev, V. N., and Popov, V. A. 1968. "Experimental Investigation of the Effect of the Excess Fuel Coefficient on the Electrical Conductivity of Potassium-Seeded Hydrocarbon Fuel Combustion Products; 042d 041a 0421 041f 0414." IAEA.
@misc{etde_22200086,
title = {Experimental Investigation of the Effect of the Excess Fuel Coefficient on the Electrical Conductivity of Potassium-Seeded Hydrocarbon Fuel Combustion Products; 042d 041a 0421 041f 0414}
author = {Gol'denberg, S. A., Zimin, Je. P., Levlev, V. N., and Popov, V. A.}
abstractNote = {An experimental study was carried out on the relation between ionization of the potassium seed and the composition of the combustion products of two hydrocarbon fuels, methane and benzine. The composition of the combustion products could be varied by changing the excess fuel coefficient for the combustion mixture. Measurements were carried out at various fixed temperatures in the range 1850-3000 Degree-Sign K (total pressure 1 atm). The temperature was kept constant (by diluting the combustion products with nitrogen). The experimental data obtained for the conductivity correspond to a potassium seed partial pressure of 1%. In the high temperature range (with benzine as fuel) measurements were carried out directly with 1% seeding, while at low temperatures (with methane as fuel) measurements were carried out for 3 x 10{sup -2}% seeding and the results extrapolated to 1% seeding. Resonance circuit and radiowave ({lambda} = 0.8 cm) damping methods were adopted in making the measurements. The temperature of the combustion products was measured by sodium D-line reversal. The measurements showed that the electrical conductivity of the combustion products with potassium seeding decreases as the excess fuel coefficient is reduced. At higher excess fuel coefficients this decrease is only slight. A sharp decrease in the electrical conductivity (several times) occurs for excess fuel coefficients in the range 1 to 1.7. In interpreting the experimental data, use was made of the results of a theoretical calculation of the effect of the hydroxyl radical on the ionization of the potassium seed (formation of KOH) and on the conductivity (capture of some free electrons to obtain OH{sup -}). The comparison showed good qualitative agreement between the experimental and calculated data, confirming the applicability of the mechanism proposed for gauging the effect of combustion product composition on seed ionization. (author) [Russian] Provedeno jeksperimental'noe issledovanie zavisimosti mezhdu ionizaciej dobavki kalija i sostavom produktov sgoranija dvuh uglevodorodnyh topliv: benzina i metana. Variacija sostava produktov sgoranija obespechivalas' izmeneniem kojefficienta izbytka topliva v gorjuchej smesi. Izmerenija provodilis' pri neskol'kihfiksirovannyh znachenijah temperatury v diapazone ot 1850 do 3000 Degree-Sign K (polnoe davlenie - 1 at). Temperatura podderzhivalas' postojannoj (putem razbavlenija produktov sgoranija azotom). Poluchennye jeksperimental'nye dannye po provodimosti sootvetstvujut parcial'nomu davleniju dobavki kalija (1%). V oblasti vysokih temperatur (pri ispol'zovanii benzina v kachestve topliva) izmerenija provodilis' neposredstvenno pri dobavke 1%, togda kak v oblasti nizkih temperatur (pri ispol'zovanii metana v kachestve topliva) izmerenija provodilis' pri dobavke 3 x 10{sup -2}% a zatem rezul'taty byli pereschitany na dobavku 1%. Dlja izmerenija provodimosti ispol'zovalis' metod rezonansnogo kontura i metod zatuhanija radiovoln ({lambda} = 0,8 sm). Temperatura produktov sgoranija izmerjalas' po obrashheniju D-linii natrija. Izmerenija pokazali, chto jelektroprovodnost' produktov sgoranija s dobavkoj kalija umen'shaetsja pri umen'shenii kojefficienta izbytka topliva. Pri dostatochno bol'shih kojefficientah izbytka topliva jeto snizhenie projavljaetsja slabo. Rezkoe snizhenie jelektroprovodnosti (v neskol'ko raz) sosredotocheno v oblasti znachenij kojefficienta izbytka topliva, priblizitel'no ot 1 do 1,7. Dlja interpretacii jeksperimental'nyh dannyh ispol'zovalis'-rezul'taty teoreticheskogo rascheta vlijanija gidroksila ON na process ionizacii dobavki kalija cherez obrazovanie gidrookisi KON i zahvat chasti svobodnyh jelektronov s obrazovaniem otricatel'nogo iona ON{sup -}. Takoe sravnenie prodemonstrirovalo horoshee kachestvennoe soglasovanie jeksperimental'nyh i raschetnyh dannyh, chto podtverzhdaet pravil'nost' rassmatrivaemogo mehanizma vlijanija opredelennogo sostava produktov sgoranija na ionizaciju dobavki. (author)}
place = {IAEA}
year = {1968}
month = {Nov}
}