A Simple Grahite Heat Exchanger.

Hello eveyone, i'm a final year student of the department of chemical engineering, Federal University of Technology Minna, Niger state, here in Nigeria and would need your assistance in my final year porject.
I plan on constructing a graphite heat exchanger. What i need is simple design diagrams,materials needed, procedure, etc. and i'll do the rest.
I'll be very grateful if this request is granted.
My email address is mekusproj@yahoo.com and my postal address is:
chemical engineering dept.
fedral university of tech.
minna, niger state,
nigeria.
Thanks for your anticipated assistance.

yours,
chukwuemeka ohuche.