ON THE HEAT EFFICIENCY OF LARGE BATCH TYPE REHEATING FURNACES
1955 Volume 41 Issue 12 Pages 1247-1251
Details
1955 Volume 41 Issue 12 Pages 1247-1251
The authors made a study of the heat efficiency of large batch type reheating furnaces that were possible to heat 6t-120t ingots, and then comprehended following matters.
1. When the weight of charged ingots per unit volume of heating chamber incressed, the heat efficiency increased, but it stopped at some point.
2. When the ratio, of areas of the heated ingots surface and the inside wall of the furnace increased, the heat efficiency increased. But there was a limit, because the ingots must have been heated uniformly.
3. The total quantity of heat that was stored in the furnace wall and was radiated from the outside of the wall, was by more than 50% less in the case insulated than the case not insulated.
4. The weight of charged ingots per unit hearth area and combustion heat per unit volume were determined by the ingots size, because ingots must have been heated uniformly.
5. It was desired that the many ports should be set in the low position, and at the same time checkers should be large and deep.
