Oxygen Sensor for Control of Wood Combustion: A Review
Keywords:Residential heating, combustion efficiency, flue gasses, air pollution, pellet furnace
AbstractZirconia type oxygen sensors, installed in the exhaust manifold of combustion engines, generate a voltage that drastically changes when the carburetor's air/fuel ratio deviates from the stoichiometric optimum. On this basis such sensors automatically regulate the supply of air and fuel in modern automobiles and in large wood-burning boilers. The literature is reviewed for use of the sensors in residential wood-burning furnaces and stoves, whose fires generally receive either too little or too much air. Unfortunately the sensors' temperature should be above 300 C, a temperature that fire effluents of the residential heating implements reach only near the end of the combustion zone, and then rapidly cool off on their further path to the chimney. Therefore, the sensors are far from ideal for residential heating implements, least of all for small stoves operated batchwise. They are more promising for the combustion control of continuously fueled pellet furnaces.
Badwal, S. P. S., and F. T. Ciacchi. 1986. Performance of zirconia membrane oxygen sensors at low temperatures with nonstoichiometric oxide electrodes. J. Appl. Electrochem. 16:28-40.nBadwal, S. P. S., F. T. Ciacchi., and J. W. Haylock. 1988. Nernstian behavior of zirconia oxygen sensors incorporating composite electrodes. J. Appl. Electrochem. 18:232-239.nBeckley, R. 1980. New combustibles analyzer proves to be reliable. Combustion 52(6):35.nChen, P. Y. S., and E. C. Workman, Jr. 1990. Combustion and emission characteristics of sawdust-coal fine pellets. Wood Fiber Sci. 22(4):377-387.nEddy, D. S. 1974. Physical principles of the zirconia exhaust gas sensor. IEEE Transactions on Vehicular Technology VT-23(4):125-128.nFleming, W. J., D. S. Howarth, and D. S. Eddy. 1973. Sensor for on-vehicle detection of engine exhaust gas composition. SAE Transaction 82, Paper 730 575.nFouletier, J. 1983. Gas analysis with potentiometric sensors. A review. Sensors and Actuators 3:295-314.nHelmer, W. A., K. Caraker, E. C. Workman, Jr., and J. Phelps. 1988. Effect of wood-to-coal fuel and underfire air on sulfur emissions and percent fuel energy loss during cofiring of wood and coal. Forest Prod. J. 38(11/12):49-54.nHetrick, R. E., W. A. Fate, and W. C. Vassell. 1981. Oxygen sensing by electrochemical pumping. Appl. Phys. Lett. 38:390-392.nHickam, W. M., and J. F. Zamaria. 1967. Furnace control by fuel cell. Instrum. Control Syst. 40(8):87-88.nInoue, T., N. Seki, K. Eguchi, and H. Arai. 1990. Low-temperature operation of solid electrolyte oxygen sensors using perovskite-type oxide electrodes and cathodic reaction kinetics. J. Electrochem. Soc. 137:2523-2527.nKubler, H. 1991. Indicators and significance of air supply in the combustion of wood for heat. Wood Fiber Sci. 23(2):153-164.nLamppa, H., and D. H. Lamppa. 1989. Wood-burning stove. U.S. Patent 4,832,000. 9 pp.nMaskell, W. C. 1987. Inorganic solid state chemically sensitive devices: Electrochemical oxygen gas sensors. J. Phys. E, Scientific Instrum. 20:1156-1168.nMaskell, W. C., and B. C. H. Steele. 1986. Solid state potentiometric oxygen gas sensors. J. Appl. Electrochem. 16:475-489.nMiyahara, Y., K. Tsukada, and H. Miyagi. 1988. Field-effect transistor using a solid electrolyte as a new oxygen sensor. J. Appl. Phys. 63:2431-2434.nSaji, K. 1987. Characteristics of limiting current type oxygen sensor. J. Electrochem. Soc. 134:2430-2435.nSaji, K., H. Kondo, T. Takeuchi, and I. Igarashi. 1988a. Voltage step characteristics of oxygen concentration cell sensors for nonequilibrium gas mixtures. J. Electrochem. Soc. 135:1686-1691.nSaji, K., H. Kondo, H. Takahashi, T. Takeuchi, and I. Igarashi. 1988b. Influence of H2O, CO2 and various combustible gases on the characteristics of a limiting current-type oxygen sensor. J. Appl. Electrochem. 18:757-762.nUsui, T., A. Asada, M. Nakazawa, and H. Osanai. 1989. Gas polarographic oxygen sensor using an oxygen/zirconia electrolyte. J. Electrochem. Soc. 136:534-542.nValasco, G., and J.-Ph. Schnell. 1983. Gas sensors and their applications in the automotive industry. J. Phys. E, Scientific Instrum. 16:973-977.nWestbrook, M. H. 1989. Future developments in automotive sensors and their systems. J. Phys. E, Scientific Instrum. 22:693-699.nWhelan, P. T., and W. E. Borbidge. 1988. Interpretation of the output signal from a zirconia oxygen sensor operating under applied current. J. Appl. Electrochem. 18:188-195.nYoung, C. T., and J. D. Bode. 1979. Characteristics of ZrO2-type oxygen sensors for automotive applications. SAE Transactions 88, Paper 790143.n
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