Code of Federal Regulations Title 40. Protection of Environment 40 CFR Pt. 72, App. D—CALCULATION OF POTENTIAL ELECTRIC OUTPUT CAPACITY

The potential electrical output capacity is calculated from the maximum design heat input from the boiler by the following equation:

For example:

(1) Assume a boiler with a maximum design heat input capacity of 340 million Btu/hr.

(2) One-third of the maximum design heat input capacity is 113.3 mmBtu/hr. The one-third factor relates to the thermodynamic efficiency of the boiler.

(3) To express this in MWe, the standards conversion of 3413 Btu to 1 kw-hr is used:  113.3x10⁶ Btu/hrx1 kw-hr / 3413 Btux1 MWe / 1000 kw=33.2 MWe