Subject: Danger of EXPLOSION: possible cathalitic effects even at low temperatures.From: Francesco CelaniDate: Fri, April 12, 2013 11:13 amTo: [omissis]@gmail.com, [omissis]@yahoo.fr, [omissis]@ni.com, [omissis]@chavaenergy.com, [omissis]@missouri.edu, [omissis]@nasa.gov
in these days I am performing very simple experiments at low temperatures, down to 77K.
I am using 2 wires, one with 2 Layers, (called "nanodiamandois") and the other with usual 500 Layers, both of Constantan type ISOTAN 44.
* Under vacuum and/or He (2.5bar), I detected a PTC (Positive Temperature Coefficient) with the 2L Constantan (about 4%).With 500 Layers I detected NTC (about 3.5%).
* When I added H2 (2.5bar), during cooling down, at a temperature of about -50°C,
I E X P E R I E N C E D E X P L O S I O N.
* The bottle, nominally tested at 16 Bar at 50°C, was completly destroyed.No iniury to us, thanks to the open plastic tube used as dewar. Just big noise.
* There is a possibility that such material is cathalitic even at low temperatures, as reported also by a old paper of Hydrogen absorption at low temperatures using Constant tick film.
!!!!PLEASE, SHARE SUCH INFORMATION TO ALL THE PEOPLE INVOLVED in the replication efforts.
Dear [omissis], put such new in the MFMP blog, ASAP!!!
Tanks for your collaboration.
Poco dopo uno dei destinatari dell'email ha risposto in questo modo:
Francesco,Thank you for the warning -- most interesting.
I can also add a warning -- we have had a runaway event with Cuprothal 49 - a constantan alloy from Kanthal (9 meters of 0.7, wire prepared in our own experiments) at a very modest temperature: < 180C. Fortunately the event was contained in a titanium tube reactor although it melted the tube which at least gave as the ability to estimate the temperature and power output at 800-1000C for 30-60min resulting in an estimated power output of around .5-1kwh. This incident occurred during cool down after the completion of several weeks testing and with all electrical inputs disconnected... so it appears that a runaway event is possible with zero input under conditions that are difficult to predict/reproduce.