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The Martin Fleischmann Memorial Project is a group dedicated to researching Low Energy Nuclear Reactions (often referred to as LENR) while sharing all procedures, data, and results openly online. We rely on comments from online contributors to aid us in developing our experiments and contemplating the results. We invite everyone to participate in our discussions, which take place in the comments of our experiment posts. These links can be seen along the right-hand side of this page. Please browse around and give us your feedback. We look forward to seeing you around Quantum Heat.

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TOPIC: Improvements to Cell Design

#485 7 years 4 months ago
Improvements to Cell Design

jeff's Avatar
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In looking at the drawings of the cell design, several improvements come to mind, based on my previous experience in building similar cells that required the ability to withstand both vacuum and pressure at elevated temperatures.

The first recommendation is to use hermetic metal-ceramic seals for all the electrical feedthroughs. This type of feedthrough is widely available in the Conflat flange form factor. In the 1.33" size up to four isolated electrical connections are available. It is relatively easy to machine the ends of the cell to accept a 1.33" CF feedthrough. Just make sure the flange is thick enough that you can drill blind holes for the six mounting bolts. Use the Viton gaskets furnished with the 1.33" CF flanges. The cell I'm designing uses one CF feedthrough on each end.

The second recommendation is to use a radially loaded Viton O-ring against the glass tube rather than relying on an axial seal. A radial seal does require an inner groove be machined, but the advantage is that the O-ring seats against the side of the glass tube rather than the bottom.

Gas/vacuum can be connected by using a 1.33" through CF flange and brazing 1/4" SS tubing into the flange. The other end of the SS tubing can be terminated with a VCR vacuum fitting. VCR fittings use a compressed metal gasket and yield a robust seal at both vacuum and pressure.

Jeff
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#486 7 years 4 months ago
Improvements to Cell Design

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bob
Karma: 14
Thanks Jeff, some good ideas there.

Regards

Bob
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