eli5 will water get colder slower in a YETI

Question

Hi all,

I recently got a YETI and it got me to wondering. When I have ice and water in there, will the ice transfer heat to the water more slowly because it’s so insulated and therefore less impacted by the outside air temperature? I know that things will stay overall colder longer because of the insulation but does that insulation effect items inside?

In: 1

Answer 1

If anything the water would cool down faster.

It insulates between inside the cup and outside the cup.

With an open cup you have 4 temperatures that are trying too equalize, the water, ice, the cup and the air outside.

With an insulated cup there are 3 temperatures trying to equalize, water, ice, cup.

And the cup is really insulated from the outside so that plays less of an effect.