On 7/26/2014 8:26 AM, Frank wrote:

Doubt it.
The heat capacity of anything you put in is bound to be greater than
air. I think water has over 1,000 times the heat capacity of air.
That means putting things in and cooling them down will probably use
more energy than that gained by the air volume loss.

OTOH, things that you normally cool down before using like bottled water
might best be stored in the refrigerator to take advantage of
maintaining cooling during a power failure.

You have a valid point about stuffing for the sake of stuffing, but if
you have a case of juice or beer, better to put it in to fill the space
rather than put a bottle at a time. You'll be using the same amount of
energy to get it down to temperature anyway, but get less air loss each
time the door is opened.