Adding Phase Change Materials to Peltier-based Air Conditioner: Experiment #1 - proof of concept.
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- เผยแพร่เมื่อ 24 ก.ย. 2024
- Using a Phase Change Material (PCM) as a heat battery for my Peltier-based air conditioner. Base calculations said I'd need about 1.6 Liters at 150J/g to be able to reduce the air temp in here by 5 degrees C.... but I think I either am not able to get that much cooling (viscosity? lower J/g?), or some other problem. It almost worked, so I think it's more a problem of volume.
Read More: / diy-solar-powered-wind...
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 Coul...
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/big...
Build process and parts:
Part 1:
/ diy-solar-powered-wind...
Part 2:
/ diy-solar-powered-wind...
Part 3:
/ diy-solar-powered-wind...
Part 4:
/ diy-solar-powered-wind...
How I plan to power it: (currently running on 110v mains power)
/ diy-appliance-backup-p...
Nice idea! I never thought about this sort of use. Instead of submerging your heat exchanger directly into the pcm you might put the pcm into bags and then put both the bags and the heat exchanger into water. The water will circulate more easily than the gelled pcm and I think you'll be able to move heat in and out faster. In spite of the gel the pcm can start to get big salt crystals forming over time if it's not agitated every so often, and it's easier to just give it a shake if contained in smaller units. It would be more difficult to dissolve crystals that grow in the radiator fins also. Great project!
Thanks for taking a look. Great idea! I suppose I can get another pump to circulate that water as well. Perhaps I could fill aluminum tubes with the PCM so the circulating water can really move aroud.
@@bigattichouse You might be able to get away with just using the convection from the radiator being on the bottom of the container to circulate things. Otherwise I think you would only need minimal stirring or maybe a fish tank bubbler
@@Nighthawkinlight Thanks. Guess I have my next article/video planned out.