[Gasification] sexy steam

[Mark Ludlow]

Hi Richard,

 

I agree with you as long as you are talking heat transfer
applications. But in an  isentropic (constant entropy)
expansion, such as occurs in a steam turbine, a phase change
from vapor to liquid can spell death to the turbine. Often
the steam is reheated  along the way, just to prevent "wet"
steam.

 

I only mention this because probably 95% of grid energy is
the result of a steam turbine driving a generator.

 

Best regards,

Mark

 

From: Gasification
[mailto:gasification-bounces at lists.bioenergylists.org] On
Behalf Of Richard Bockwinkel
Sent: Monday, February 4, 2013 5:25 PM
To: Toby Seiler; Discussion of biomass pyrolysis and
gasification
Subject: Re: [Gasification] sexy steam

 

OK...I have been monitoring this group for quite some
time...and I have to concur with Toby...and add...

 

STEAM...is like Dr. Pepper...paraphrasing...'MIS
UNDERSTOOD"...

 

Phase change is the POWER and VALUE of
"water"...er...vapor...er...ice...er STEAM...

 

 

great illustration of the power of phase change...

 

http://www.youtube.com/watch?v=pOYgdQp4euc

 

Richard Bockwinkel

 

On Feb 4, 2013, at 4:15 PM, Toby Seiler wrote:





"steam is definitely not sexy in the renewable energy
world".

 

Go back to the "Stanley Steamer" and study the boiler.  I
think about 1500 of them were sold and there were no boiler
explosions (that I found).  When checking with Kennedy Tank,
a similar boiler can be made using todays materials.  From
my research, it is the verticle firetube (and a lot of them)
that is key, since the temperature has limits as long as it
has ANY water in it.   

 

My boss at Bryan Steam was the ASME Section 7 Chairman for
many years (in 1978) and they had built a steam car (around
1900) that we often discussed.   He assured me steam would
be back to "sexy" and I still believe this to be true, if
one chooses a design that is inherently safer.  

 

Stanley Steamer held the world land speed record for a very
long time (untill recently).  That boiler was rated at
600psi but my guess is, at the speed record attempt they
were well over 1000-1200f.  There is a lot of stored energy
in water that is not yet steam (due to pressure) and I often
wonder about injecting super heated water into an engine,
taking advantage of the 1600x expansion, liquid to vapor. 

 

 

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