I have seen a drain cooler placed outside the FWH. the FWH transferred heat from the the steam bled from the high pressure turbine I believe to the feed water. The drain cooler exchanged heat from the condensed steam from the FWH (usually a steam and water mixture) to bearing cooling water...
If your parents can't help you out, apply for financial aid. You should get some grants along with your loans. I have a buddy who basically gets paid to attend college just based on his financial needs.
also
you don't want to pay mad money to take calculus, physics and humanities...