I need to find a table, chart, or graph of the change in ammonia's
boiling point as you add water. This chart will be used to find the
optimum mixture which will then be used a the working fluid inside a
experimental condenser and evaporator to generate electricity (sort of
simular to OTEC).

Hi -

I think that the following article has the graphs that you need.  The
percentage ammonia is represented as a mass-fraction, so, you may need
to convert that depending on how you're used to representing the
mixture.  Figures 3-6 show the dependence of the boiling point upon
mass fraction, temperature and pressure.

http://www.boulder.nist.gov/div838/symp13/STORAGE/PDF/CORR3THO.PDF

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Request for Answer Clarification by alakon-ga on 20 Sep 2002 18:10 PDT

Wow... thats pretty good. I'll increase it to 3.50 if you tell me a
little about the search strategy involved. I looked for several hours
and couldn't find a thing!

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Clarification of Answer by synarchy-ga on 21 Sep 2002 09:22 PDT

I searched for "thermodynamics ammonia-water mixture".  You have to
wade through some irrelevant pages, but, it gets you the answer too.

Sorry... I think it is impossible for me to raise the reward since you
have already given me an answer