What are some good materials for retaining heat?

What are some good materials for retaining heat? When i look up heat tape im only getting results for heat resistant tape, but would picrel retain heat instead?
Link: https://www.homedepot.com/p/Frost-King-2-in-x-15-ft-Foam-and-Foil-Pipe-Wrap-Insulation-Tape-FV15H/100174724

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  1. 1 year ago
    Anonymous

    The reason I'm asking is because my 6 year old food dehydrator is on its last leg. It takes a lot longer to dehydrate my veggie chips and my laser thermometer is showing me its not getting as hot as it used to. I know ill have to buy another eventually, but in the meantime I'd like to try and extend the life of it for a bit longer. Alternatively I was wondering if I could just duct tape some foil along the sides of the trays, you think that would refect some heat back into the unit? Like some ghetto kind of insulation

  2. 1 year ago
    Anonymous

    >What are some good materials for retaining heat?
    Wisdom is greater when realizing the best insulator is nothingness.

    • 1 year ago
      Anonymous

      >mfw laozi invented the vacuum flask

  3. 1 year ago
    Anonymous

    Spray Foam

    • 1 year ago
      Anonymous

      >Spray Foam

      https://i.imgur.com/DejMcKA.jpg

      This stuff is the best. It has different brand names, but it's easy to find

      >Ayrfoil

      Which of these two are better? And are there specific brands which are better or worse?

      air the best insulator
      pretty cheap too

      If that were true, then leaving some empty trays on the unit during a dehydrating cycle would increase the heat, but it instead had the opposite effect(I tried it)

      MLI: a sandwich of space blankets and polyethylene mesh (like tulle) in alternating layers. More layers more insulation, with the practical limit being around 100 layers (for space applications, don't know here in the atmosphere). It's the material used for spacecraft thermal management, and is also used for insulating cryogenic equipment.

      Isn't that for deflecting heat, and not retaining it?

      • 1 year ago
        Anonymous

        >If that were true
        It is. User error doesn't change the laws of physics.

  4. 1 year ago
    Anonymous

    Asbestos

    • 1 year ago
      Anonymous

      they may have stopped selling this at home depot. didn't have any last time i went. lowes should still have it though.

  5. 1 year ago
    Anonymous

    This stuff is the best. It has different brand names, but it's easy to find

    • 1 year ago
      Anonymous

      Unfortunately, it's impossible to resist popping it.

  6. 1 year ago
    Anonymous

    air the best insulator
    pretty cheap too

  7. 1 year ago
    Anonymous

    MLI: a sandwich of space blankets and polyethylene mesh (like tulle) in alternating layers. More layers more insulation, with the practical limit being around 100 layers (for space applications, don't know here in the atmosphere). It's the material used for spacecraft thermal management, and is also used for insulating cryogenic equipment.

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