Discussion Of "Application Of Electricity To The Annealing Of Glass Bottles And Containers"

The paper gave a history and explanatory data on lehrs for bottle and container annealing (see ceram.abs., 22 5 1943 69). The discussion brought out the following points: Glass annealed per kw.-hr. varied from 31 to 392 lb. in the same lehr, a 26-oz. mineral bottle requiring 300kw-hr. Twenty per cent of the total energy in a glass factory might be used to cool the glass. Strip heaters are preferable to wire windings. Temperature control is easier with electric lehrs than with other fuels. The relative value of fuels was discussed.