Short term, Light weight, Low volume Refrigeration Design

[Bland67]

Hello Guys,

This is my first time posting here - just wondering if anyone has some insight on a project that I am working on. I want to be able to temperature control an insulated shoe box sized volume at ~5 degrees Celsius for about 20 minutes. The main constraints are that I would need the temperature control system to be lightweight (<1kg) and occupy only a small fraction of the shoe box volume.

Any ideas would be welcomed! I would rather not just throw a block of dry ice in the container, though.

Brandon

 

[Bystander]

lightweight (<1kg) and occupy only a small fraction of the shoe box volume.

just throw a block of dry ice in the container

You've about optimized it.