_Generator A Size_ (producing 1,000 cubic feet per hour):
Anthracite to make gas at the rate of 1,000 s. d.
cubic feet per hour=l2 lb x 9 working
hours=l08 lb., or say, 1 cwt. at 20s. a
ton.................................... 1 0
Allowance for wages of attendant......... 1 0
Repairs and depreciation of generator,
gasholder, etc. (5 per cent. on £l25)=
per working day........................ 0 5
Interest on capital outlay, ditto........ 0 5
______
Total........................... 2 10
cub. ft.
Gas produced............................. 9.000
Less gas used for generating and
superheating steam..................... 1,000
_____
Total effective gas for 2s. 10d. 8,000
Net cost 4¼ d. per 1,000 cubic feet.