8Wang C, He B, Sun S, et al. Application of a low pressure economi- zer for waste heat recovery from the exhaust flue gas in a 600 MWpower plant[ J]. Energy ,2012,48 ( 1 ) : 196 -202.
9Espatolero S, Cort6s C, Romeo L M. Optimization of boiler cold- end and integration with the steam cycle in supercritical units [ J ]. Applied Energy, 2010,87 ( 5 ) : 1651 - 1660.