| Developed. | per Cubic Foot. |
|______________________|______________|_________________|
| | | |
| 0.5 | 18.0 | 35.9 |
| 0.7 | 27.0 | 38.5 |
| 1.0 | 45.6 | 45.6 |
|______________________|______________|_________________|
In the tabular statement in Chapter I. the 0.7-foot burner was taken as
the standard, because, considering all things, it seems the best, to
adopt for domestic purposes. The 1-foot burner is more economical when in
the best condition, but requires a higher gas pressure, and is rather too
powerful a unit light for good illuminating effect; the 0.5 burner
naturally gives a better illuminating effect, but its economy is
surpassed by the 0.7-foot burner, which is not too powerful for the human
eye.
For convenience of comparison, the illuminating powers and duties of the
0.5- and 0.7-foot acetylene burners may be given in different ways:
ILLUMINATING POWER OF SELF-LUMINOUS ACETYLENE.
_0.7-foot Burner._ | _Half-foot Burner._
|
1 litre = 1.
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