Re: Colonizing the Galaxy in Eight Easy Steps

From: Albert (alwagner_at_tcac.net)
Date: 06/13/04 

Date: Sat, 12 Jun 2004 21:35:46 -0500

On Sun, 13 Jun 2004 12:35:24 +1000
"michael" <copsR@yourdoor.com> wrote:

> "quibbler" <quibbler247@yahoo.com> says:
>
> > Unfortunately your *reductio ad absurdum* doesn't work. One
> > certainly can produce steam more efficiently by reducing pressure.
>
> But you can't use it to turn a turbine more
> effectively. Lower pressure means the steam
> does less work turning the blades. Duh-oh?

Quibbler is correct. And you are wrong. It is the difference in
pressure between the input and exhaust that allows work to be done. The
greater the difference the more work. Condensing the waste steam at the
exhaust increases the pressure differential and hence increases the
efficiency.

<snip> 

-- 
"Let me give you a definition of ethics: It is good to maintain and
further life; it is bad to damage and destroy life."
	-- Albert Schweitzer

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