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V, ELECTRIC KILNS AND FURNACES
Author(s) -
Gould R. E.,
Toole M. G.,
Nelson M. S.
Publication year - 1939
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1939.tb19458.x
Subject(s) - kiln , electricity , coal , waste management , resistor , electric power , environmental science , engineering , nuclear engineering , electrical engineering , composite material , materials science , power (physics) , physics , voltage , thermodynamics
A bstract An experimental electric tunnel kiln firing to cones 13 to 14 is described. This kiln is different from previous electric‐kiln experiments in the type of heating elements used, their position in the kiln, and the method of heat recuperation. Heating is done by a new graphite resistor operated at low wattage dispersion placed horizontally in the kiln to heat the charge from underneath and on top. The difficulties in putting the kiln into operation are described. The experiment was undertaken to answer three primary questions, viz. , (1) do resistors exist that will heat properly to these temperatures and is their life “commercial” in cost and ease of manipulation; (2) can heating be done evenly over given cross sections; and (3) what are the relative costs of using electricity as a fuel compared with other types, such as gas, oil, or coal? The operation of the electric kiln was successful after it was adjusted mechanically; no grave difficulties were encountered in the heating elements, and the heating over the cross section used was even. From the data obtained, it appears that under certain conditions the use of electricity as a fuel can compete with gas or oil. The power input into the kiln for any given temperature is a constant, and the power consumed per unit weight varies inversely with the weight of the charge per cubic foot and the speed of schedule.