4 ms·

A sealed container? I'm not following the physics on this. I can only assume you're talking about evaporative cooling of some sort. This was not an open cont

• Retric 10y ago
  No, you need to insulate the container from the ground. Then you have conductive and radiative heat gain and loss with the air. Works better on top of a hill, in the middle of a field, under a clear sky. The container has to have minimal thermal mass, and be a food conductor but that's it. PS: An easy demo is a car roof with the windows open at night in a field.
  • samch 10y ago
    They did insulate the container from the ground.
    • Retric 10y ago
      Which is why I am saying this. The important thing at night is not delta from ambient temperate, but the delta with and without their covering.