Formula.
N5280
c × 4,
where N is the number of miles per hour, c the wheel circumference. (Table 6.)
No. 8.
353. Knowing the hourly consumption of steam, to reduce it to water.
Formula.
B
N,
B being the bulk of steam in cubic feet, and N the relative volume of steam and water. (The values of N are given in table 8.)
No. 9.
354. Knowing the hourly water consumption, to find the grate area and heating surface.