, page 239, for the self-luminous gas:
ILLUMINATING POWER OF INCANDESCENT ACETYLENE.
HALF-FOOT BURNERS.
1 litre = 3.65 candles | 1 candle = 0.274 litre.
1 cubic foot = 103.40 candles. | 1 candle = 0.0097 cubic foot.
A number of tests of the Guentner or Schimek incandescent burners of the
10 and 15 litres-per-hour sizes, made by one of the authors in 1906, gave
the following average results when tested at a pressure of 4 inches:
_________________________________________________________________
| | | | |
| Nominal size | Rate of Consumption per | Light in | Duty |
| of Burner. | Hour | Candles | Candles per |
| | | | Cubic Foot |
|______________|_________________________|__________|_____________|
| | | | | |
| Litres. | Cubic Foot | Litres | | |
| 10 | 0.472 | 13.35 | 46.0 | 97.4 |
| 15 | 0.663 | 18.80 | 70.0 | 105.5 |
|______________|____________|____________|__________|_____________|
These figures indicate that the duty increases slightly with the size of
the burner.
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