Can someone with some understanding of thermodynamics give some insight into the science behind this thing. I have a strange skepticism of its usefulness and range -- some news outlets going as far as saying 'Throw out your air-conditioner' [1]Geizeer - https://www.indiegogo.com/projects/geizeer-eco-friendly-ice-cooling#/
[1] http://www.techly.com.au/2016/06/01/throw-air-con-wooden-cube-cools-one-cent-per-day/