Peltier A/C + Phase Change Material "Joulebox"

Update: Using a Phase Change Material (PCM) as a heat battery for my Peltier-based air conditioner. Added 2 more liters of PCM, and enclosed in a styrofoam cooler. Ran all day (stopping and starting) reversing polarity on the Peltiers to get the material as cold as possible, then running a cooling test. Read More: bigattichouse.medium.com/diy-solar-powered-window-… I've taken notes and I have some ideas (not just increasing volume), I still think this is plausible. If I work this right, I should be able to cool a room during the day, then blow off the stored heat (outside) in the evening. PCM based on @Nighthawkinlight 's Sodium Sulfate PCM @    • DIY Supermaterial Could Save You From...   Building a DIY airconditioner using commodity CPU cooling tech. Reconfigured so it can sit in a window, and run on 110v mains power. I'll be gathering internal/external temp readings over time today while this runs. Goal is to have to run on solar panels. Github Data: github.com/bigattichouse/solar-peltier-air-conditi… Build process and parts: Part 1: medium.com/@bigattichouse/diy-solar-powered-window… Part 2: medium.com/@bigattichouse/diy-solar-powered-window… Part 3: medium.com/@bigattichouse/diy-solar-powered-window… Part 4: bigattichouse.medium.com/diy-solar-powered-window-… How I plan to power it: (currently running on 110v mains power) medium.com/@bigattichouse/diy-appliance-backup-pow…