The Efficiency of Glass-Melting Tank Furnaces. Some Calculations of the Quantity
JSGT 1946 V30 T278-T294
By using equations giving values of Cp, the mean specific heat, correct to within 3% of the theoretical values, for the gases involved in the combustion of all fuels, equations have been derived from which the heat availabilities of those fuels at any temperature and any efficiency of return of heat can be calculated. The values for a typical producer gas, oil and town gas when there is no excess air have been tabulated and also the subtrahends from those values in the more usual condition when there is excess of air. The values almost correspond at 1000° and lower temperatures with those derived by using theoretical specific heats. They are not more than 3% low at 1400°, and can be confidently used for all practical purposes. Comparison has been made with W. A. Moorshead's values of heat availability and those derived by using P. O. Rosin's Itcharts
D. Sismey
