What is the cycle of concentration if the chloride content of boiler water is 186 ppm and the feedwater chloride content is 38 ppm?
CYC = Bch/FCh
                            CYC = Bch/FCh
                            CYC = 186 / 38
                            CYC = 4.89
Where,
                            CYC cycles of concentration
                            Bch boiler water chlorides (ppm)
                            FCh feedwater chlorides (ppm)

NOTE – If chlorides level are not known the same formula can be applied using the boiler’s and feedwater conductivity levels