The polystyrene will insulate the area it fills making less room for heat transfer by convection, hence less energy will be used to maintain the temperature.
However I would use plastic containers of drinking water, instead thus making it more economical!
Padraic
By putting it in a freezing environment of 0oC or lower
No, putting cassette tapes in the freezer will not revitalize them. This will damage the tapes. However, putting batteries into the freezer will revitalize the battery charge.
Yes, putting them in a freezer stops the ripening process.
No, just put it in the freezer
If a phone screen is cracked or broken, putting the phone in the freezer will not help the crack. If the display is not working properly, putting the phone in the freezer for a short time might help but it shouldn't be left in the freezer for longer than a few minutes.
Putting it in the freezer should do it.
No.
Turn your freezer off before putting the water inside.
no
Putting ice into them or put them into freezer.
by putting it in the freezer...that makes it freeze and get cold...
The reason that a new freezer has to be switched on for 12 hours before putting any food in it is so that the freezer will have time to get to the proper temperature for food storage. The freezer is too warm when it is first turned on, and food put in would likely spoil.