What is the percent of blowdown for a 10,000#/hr boiler working at 8.6 cycles of boiler water concentration?

%BD = (1 / CC) * 100
                            %BD = (1 / CC) * 100
                            %BD = (1 / 8.6) * 100
                            %BD = 11.6%
Where,
                            %BD percent of blowdown
                            CC    Concentration cycles