On Sat, 22 Sep 2007 08:29:57 -0700, Dan Best
wrote:

...the vast bulk of the energy used by the
distiller is not used in heating the water to the boiling point, but in
performing the phase change from liquid to gas. I believe this is a
constant regardless of the surrounding pressure....

- Dan best

As it happens, you believe wrongly.

But you might be surprized if you took a moment to look up enthalpy of
water, or refer to steam tables, or whatever....

Brian Whatcott Altus OK