Using Russian fuel oil, which can be obtained in bulk in London at 3d.
per gallon, the proprietors of the Springer plant guarantee 51/2 candle
power per 1,000 cubic feet of gas per gallon used, so that, to produce
a 22 candle gas, 4 gallons would be used. The cost per 1,000 cubic
feet may be roughly tabulated, as the coke used amounts to about 40
lb.
s. d.
Oil.................................... 1 0
Coke................................... 0 3
Labor and purification................. 0 2
Charge on plant........................ 0 1
----
1 6
Twenty five per cent. of 12-candle gas when mixed with 75 per cent. of
the 16-candle gas gives the required 17.5 candle gas, which would
therefore cost 1s. 11/2d., or the enrichment would have cost 11/2d.
By the Lowe process, an increase of 5.3-candle power is guaranteed for
the consumption of a gallon of the same oil, so that the cost would be
a shade higher, all other factors remaining the same, while with the
Van Steenbergh process both grade of oil and consumption of fuel vary
from either of these processes.
Pages:
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144