Society of Glass Technology · [Sheffield] · leaf 605
burner couldbe removed and the furnace opening closed by a firebrick. Only 14—2 204 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. in small furnaces using low-pressure burners was the outlay lesscostly than when producers were employed. Oil transport, how-ever, was less difficult than that of coal and… … *Matafe£*BiM^F~ Fig. 136. secondary air, of which 10 per cent, was pressure air, were required for 1 kg. of oil. Thus in the above case, n. x 1-4=300 cubic ° 24 metres of air per hour were needed from the compressor. Theair used was at a pressure of 2—3 atmospheres, whilst steam wasemployed at 5—7…
Glass
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