Automatically regulated combustion process

Details Automatically regulated combustion process Automatically regulated combustion process

1984-08-20

1990-09-25

Kamen, Noah P.

Combustion

Process of combustion or burner operation

Controlling or proportioning feed

431 78, 324464, 250283, 55102, F23N 500

Patent

active

049590103

ABSTRACT:
In a combustion process a fuel is mixed with an oxygen-containing gas in an adjustable ratio. This fuel-gas-mixture is burned and thereby an exhaust gas is produced. At least a part of the exhaust gas is collected and exposed to an ultra violet radiation source, thereby generating positive and negative charge carriers in the exhaust gas by means of a photoelectric charge separation process. The kind or amount of the positive and/or negative charge carriers is detected to produce a measurement value which reflects the amount and/or the charge of the carriers. Therefrom a control signal is derived and the mixture-ratio of the oxygen-containing gas and the fuel, the so-called .lambda.-factor, is adjusted in response to said control signal in order to improve the efficiency of the combustion and to reduce the emission of toxic substances.

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"Photoelectron Emission from Small Particles Suspended in Air", Appl. Phys. Lett. 32(11), Jun., 1978.
Photoelectric Charging and Detection of Ultrafine Particles, "Atmospheric Environment", 1983, vol. 17, No. 3, pp. 655-657.
Probing Aerosols by Photoelectric Charging, H. Burtscher, et al., "J. Appl. Phys., " 53(5), May 1982, pp. 3787-3791.
Dynamic Behavior of Aerosols, Charles E. Billings, et al., "Handbook on Aerosols", Technical Information Center, Energy Research and Development Administration, 1976, pp. 40-59.

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