Dear Jed, Just re peristaltic pumps- I have worked with them in the lab from the 70 years of the last century and Nature uses then for a very long time, including in our digestive systems. Peter
On Tue, Jan 18, 2011 at 6:24 AM, Jed Rothwell <jedrothw...@gmail.com> wrote: > <mix...@bigpond.com> wrote: > > Jed, in your report you quote: >> >> "30 second period" (see #2). >> >> Was that the duration of the test?? >> >> (I had (perhaps mistakenly) gained the impression that it ran for at least >> an >> hour). >> > > That's confusing, isn't it? The Jan. 14 test was about an hour. Not sure > how long it took to reach the terminal temperature and dry steam, but after > that they ran for 30 minutes exactly. I have a graph showing that. It shows > the reaction quenching remarkably quickly. That's almost as good as starting > up quickly. It would be nice to have a cold fusion reaction we can turn off. > > 30 seconds is how they quote the flow rate. It seems the pump setting is > for 30 second intervals; i.e. 146 ml/30 s. > > In the video the pump makes a loud noise and sends a pulse of water every > few seconds. I can understand just enough Italian that I think someone is > saying "that's the pump." A constant displacement pump grabs a precisely > calibrated amount of water and sends it in a pulse, so you vary the flow by > timing the pulses. Peristaltic pumps have a more even flow. > > Peristaltic pumps are an example of technology that by rights should not > work, but they managed to pull it off. They overcame what seemed to be > insurmountable problems with plastics. You have a wheel pressing down and > squeezing the plastic tube thousands of times an hour for weeks or months. > Early plastics quickly became brittle and broke. I don't recall who did > this, but I read about it and I got the impression that person really, > really, REALLY wanted to make peristaltic pumps work, driven by > some inscrutable inner desire. > > - Jed > >
