Of course there is "STEAM" from Babcock & Wilcox. Believe they just released the 41st edition. Has mostly full derivations of the heat mass transfer principles for any gas or coal fired boiler. Otherwise a darn good general reference.
I have a book entitled "Combustion: Fossil Power Systems" by Combustion Engineering, Inc. Its copyright is 1981, but it seems pretty relevant. Lots of good performance curves and stuff about fuel in general.
Another book on my shelf is "The Control of Boilers" by Sam G. Dukelow copyright 1991. Haven't had a chance to delve too much into this one, but it looks pretty thorough. This one might be difficult to find.
For heat exchangers, check out "Steam Surface Condensers" by Richard E. Putman copyright 2001. Performance and efficiency study techniques and evaluations. The title says specifically condensers but there is alot that could apply to feedwater heaters and DA's.
Check out Ebay for books as well.
I personally am still looking for a good turbine/generator book.
~Sam