So the short answer is that rather than not thinking to hook up the pressure sensor, the they thought to not do so given the exigencies of their particular situation.
On Fri, Feb 6, 2015 at 3:57 PM, Bob Higgins <rj.bob.higg...@gmail.com> wrote: > I wouldn't call that bizarre, I would call that a sense of > self-preservation kicking in. > > Remember that these fellows have come together for only a limited time to > run these experiments. It could be that the appropriate plumbing was not > readily available to hook up the pressure sensor in a way that did not open > up a large gas volume. The volume inside the Parkhomov alumina tube is > really small. Maintaining that small volume is important to generate the > high pressures as the LiAlH4 decomposes. To use the long tube (so as to > get the compression fitting away from the heat), almost all of the volume > must be filled with alumina rod and then what is connected on the end to > the compression fitting must also be minimum volume. Otherwise, the > pressure measured would not be representative of what it was inside > Parkhomov's reactor. I am working on plumbing to make such measurements > using 1/16" stainless tubing having a 0.006" bore with appropriately small > other fittings to minimize the dead gas volume in the plumbing. > > What I particularly don't like about just using a cap on the end is that > the really high pressure is likely to remain even after the reactor cools > to room temperature. How do you bleed out the gas to open the tube safely? > > My objective is to measure the pressure over the course of the reaction, > have a way to capture the product gas in a sample cylinder for analysis, > and have a way to bleed off any remaining pressure when cool. > > Bob Higgins > > > On Fri, Feb 6, 2015 at 2:41 PM, James Bowery <jabow...@gmail.com> wrote: > >> Bizarre that they would think to hide behind an explosion shield -- which >> is rational given prior pressure excursions -- but would not think to hook >> up the pressure sensor. >> >> On Fri, Feb 6, 2015 at 1:13 PM, Axil Axil <janap...@gmail.com> wrote: >> >>> Bob Greenyer <https://disqus.com/by/bobgreenyer/> Obvious >>> <http://www.e-catworld.com/2015/02/06/live-video-feed-from-mfmp-feb-5th-experiments-planned/#comment-1838945044> >>> • 40 minutes ago >>> <http://www.e-catworld.com/2015/02/06/live-video-feed-from-mfmp-feb-5th-experiments-planned/#comment-1838958558> >>> >>> The pressure sensor was not connected. this can be seen visually. The >>> core was shown in pictures earlier in the evening on Facebook. >>> >>> On Fri, Feb 6, 2015 at 1:58 PM, MarkI-ZeroPoint <zeropo...@charter.net> >>> wrote: >>> >>>> Do you believe the sensor, or your eyes? >>>> >>>> -mi >>>> >>>> >>>> >>>> *From:* James Bowery [mailto:jabow...@gmail.com] >>>> *Sent:* Friday, February 06, 2015 10:42 AM >>>> *To:* vortex-l >>>> *Subject:* Re: [Vo]:Dog Bone Project >>>> >>>> >>>> >>>> The pressure release hypothesis is inconsistent with the "PSI" read out >>>> in the video, which never reaches 1.0. >>>> >>>> >>>> >>>> On Fri, Feb 6, 2015 at 12:39 PM, MarkI-ZeroPoint <zeropo...@charter.net> >>>> wrote: >>>> >>>> At 2:29/2:30 into the short segment posted by Craig, it looks like the >>>> right-side end-plug, or whatever is sticking out that end, blows out. And >>>> I use that term specifically since one also sees some hint of a pressure >>>> release. Whether that release is at an appropriate level is apparently >>>> debatable... >>>> -mark iverson >>>> >>>> >>>> -----Original Message----- >>>> From: Orionworks - Steven Vincent Johnson [mailto: >>>> orionwo...@charter.net] >>>> Sent: Friday, February 06, 2015 9:25 AM >>>> To: vortex-l@eskimo.com >>>> Subject: RE: [Vo]:Dog Bone Project >>>> >>>> Good show, >>>> >>>> Thanks, Craig. >>>> >>>> Regards, >>>> Steven Vincent Johnson >>>> svjart.orionworks.com >>>> zazzle.com/orionworks >>>> >>>> > Short segment showing the explosion. >>>> >>>> > https://www.youtube.com/watch?v=dDfRaDY2R_A&feature=youtu.be >>>> >>>> > Craig >>>> >>>> >>>> >>> >>> >> >
