Abstract: Abstract:In Fujan Huadian Kemen Power Generation Company Limited, a bypass flue was added for the booster fan of unit No.3. The relevant test of booster fan bypass operation was carried out. According to the test result, the unit economical efficiency before and after reformation was evaluated, and the evaluation conclusion is that to add the bypass flue is useful for energy conservation and consumption reduction, and the cost of the reformation can be recovered for a short period.

Key words: Keywords:booster fan, bypass flue, economical efficiency, energy conservation and consumption reduction