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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Richard,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>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.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I only mention this because probably 95% of grid energy is the result of a steam turbine driving a generator.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Best regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Mark<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> Gasification [mailto:gasification-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Richard Bockwinkel<br><b>Sent:</b> Monday, February 4, 2013 5:25 PM<br><b>To:</b> Toby Seiler; Discussion of biomass pyrolysis and gasification<br><b>Subject:</b> Re: [Gasification] sexy steam<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>OK...I have been monitoring this group for quite some time...and I have to concur with Toby...and add...<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>STEAM...is like Dr. Pepper...paraphrasing...'MIS UNDERSTOOD"...<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Phase change is the POWER and VALUE of "water"...er...vapor...er...ice...er STEAM...<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>great illustration of the power of phase change...<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><a href="http://www.youtube.com/watch?v=pOYgdQp4euc">http://www.youtube.com/watch?v=pOYgdQp4euc</a><o:p></o:p></p></div><div><div><div><div><div><div><div><p class=MsoNormal style='margin-bottom:13.5pt'><span style='font-size:13.5pt;font-family:"Trebuchet MS","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Trebuchet MS","sans-serif";color:black'>Richard Bockwinkel<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Trebuchet MS","sans-serif";color:black'><o:p> </o:p></span></p></div></div></div></div></div></div><div><div><p class=MsoNormal>On Feb 4, 2013, at 4:15 PM, Toby Seiler wrote:<o:p></o:p></p></div><p class=MsoNormal><br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><div><p class=MsoNormal style='background:white'><span style='color:black'>"steam is definitely not sexy in the renewable energy world".<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>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. <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>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. <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>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. <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div></div></div><p class=MsoNormal>_______________________________________________<br>Gasification mailing list<br><br>to Send a Message to the list, use the email address<br><a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a><br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br><a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a><br><br>for more Gasifiers, News and Information see our web site:<br><a href="http://gasifiers.bioenergylists.org/">http://gasifiers.bioenergylists.org/</a><o:p></o:p></p></blockquote></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>