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  • Users: eng3000
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  1. eng3000

    Simple Air / Air Heat Exchanger

    Can someone please give a basic formula for calculating the practicality of using a concentric tube counterflow heat exchanger for building heat recovery purposes. A customer would like to bring in fresh air and exhaust stale air from a room of around 250m2 size. This is not my area of...
  2. eng3000

    Niobium Electroplating Conditions

    I'm researching the electroplating of Niobium on top of an initial electroplated finish (on a non-conductive base). As a method, I expect to use a molten alkali metal chloride solution. I can find some indicators of required temperature, but so far none on the 'electro' setup, i.e. potential...
  3. eng3000

    Niobium Electroplating Conditions

    I'm researching the elecroplating of Niobium on top of an initial electroplated finish (on a non-conductive base). As a method, I expect to use a molten alkali metal chloride solution. I can find some indicators of required temperature, but so far none on the 'electro' setup, i.e. potential...
  4. eng3000

    Materials for black chip resistant ceramic

    Can anyone help with the following brief? For a jewellery and decoration application I'm trying to find some ideas on a formulation for a black or grey (for aesthetic reasons,) non-toxic/irritant ceramic which is hard, preferably quite chip resistant (through droping,) and does not fail...

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