I’m a fan of having my drinks cold, and have been trying to figure out what is the most energy efficient way to do it. As I see it the options are
Leave the bottle in the fridge
This is a good option because the refrigerator is relatively efficient when compared to the freezer.
The drawback (perhaps) is that you will be keeping a large amount of the liquid (lets say pepsi max… I’m not a coke man) cool for a long time, when you really only need it cool at the time your drinking it.
Use ice cubes
Ice-cubes have the benefit of meaning you have less in the fridge, and so are trying to keep less cool. I mean keeping air cool is less challenging than liquid. Also they give greater flexibility on what drink you may want cooled.
The main drawback is that the freezer is relatively less efficient than fridge (since the bigger the difference between room temperature and the target temperature, the more energy required to achieve it)
At the moment I’m beginning to think leaving the bottle in the fridge is the correct option (which I never do), but I’m interested in getting other suggestions.