I suggest passive heat pipes below if making a freezer. Ensure they are filled appropriately for low temp. You will transfer more heat into the peltier from conduction around the chamber, instead of collecting heat from only air. This also creates extra cold sink mass, with the fluid in the pipe.
Ahh, lol. You beat me to it! This is the project I'm hoping to build as well, but mine isn't going to be run off solar (at least not directly) I have a lot of hurdles to overcome with what I have in mind as well, like how to handle the moisture inside the cooler. I wanted to get one of the 12 volt DC coolers and see how they work. I'm confident that I can come up with something that would be more cost effective that I could also share with everyone. I hope to be able to utilize my 3d printer as well. I'm excited to see your progress on this build.
@colin8532 I think your project will proceed 10x the pace of mine, as this turtle is proceeding at a very slow pace :) A small fridge is now under construction for research purposes. It will be direct solar and DC 12v. It took well over a week just to get some peltiers installed on a piece of board. And months to finally see freezing temps... PS: I have a Monoprice mini 3D printer collecting dust, really hope to get that thing going again!
Thanks for the update. Keep up the great work! I hope you will not mind me borrowing some of your ideas for a solar powered ice cream maker... Will need to do some redesign of the solar for tropical latitudes.
@christopherd.winnan8701 Hi, thanks for the encouragement, hope I can build a fridge soon. It's harder than it should be :| and feel free to borrow, sharing ideas with free thinking people is what this place is about. Solar powered ice cream sounds fantastic!
Maybe a idea on this? Think walk in cooler at a restaurant, have evaporator units blowing cold air. Couple years ago used a 120MM aluminum water cooling heat sink with 3 60watt peltier modules and rv fluid but it froze up when got to 1OF. Been thinking of different fluid maybe 100 proof vodka?
@Off-gridPA I'm interested in trying evaporation. Running the heat outside and spraying mist over it. Alcohol might work, it's worth a try! Right now I'm testing a larger peltier fridge (not the one shown), and it seemed to work well. Ordered some parts to make a better one. Showing the results and test as soon as possible.
@@solarpoweredge one thing about peltier like compressor is cascade refridgeration drop you colder than ambient air water cooling haven't tried that yet an option one needed to turbo charge peltier cooling. RV antifreeze didn't work well as a refridgeration fluid being froze up in aluminum block said earlier. Peltier can go down to almost cryogenic temps pretty wild where cascade refridgeration come in handy. Definitely need a fan in a cooler move cold air around. Air seems or is a insulator without a fan cooling doesn't do much. Help save battery power direct connect pv peltier fridge. 😉✌️
@Off-gridPA A solar peltier fridge (larger than my portable compressor fridge) is already in testing :) the videos don't keep up with workshop unfortunately....
Awesome! Am very excited and waiting in anticipation to the videoed progression.. and thank you for this video too.
@Victoria-gq8gt Welcome and thank you for your support, hope this thing works on a bigger fridge box
cant wait to see this cooler version
@vrrevolution9183 currently under construction 👍
I suggest passive heat pipes below if making a freezer. Ensure they are filled appropriately for low temp. You will transfer more heat into the peltier from conduction around the chamber, instead of collecting heat from only air. This also creates extra cold sink mass, with the fluid in the pipe.
@kelimike Will certainly be testing heat pipes in the future, they are very good at what they do
Ahh, lol. You beat me to it! This is the project I'm hoping to build as well, but mine isn't going to be run off solar (at least not directly) I have a lot of hurdles to overcome with what I have in mind as well, like how to handle the moisture inside the cooler. I wanted to get one of the 12 volt DC coolers and see how they work. I'm confident that I can come up with something that would be more cost effective that I could also share with everyone. I hope to be able to utilize my 3d printer as well. I'm excited to see your progress on this build.
@colin8532 I think your project will proceed 10x the pace of mine, as this turtle is proceeding at a very slow pace :) A small fridge is now under construction for research purposes. It will be direct solar and DC 12v. It took well over a week just to get some peltiers installed on a piece of board. And months to finally see freezing temps...
PS: I have a Monoprice mini 3D printer collecting dust, really hope to get that thing going again!
Thanks for the update. Keep up the great work!
I hope you will not mind me borrowing some of your ideas for a solar powered ice cream maker...
Will need to do some redesign of the solar for tropical latitudes.
@christopherd.winnan8701 Hi, thanks for the encouragement, hope I can build a fridge soon. It's harder than it should be :| and feel free to borrow, sharing ideas with free thinking people is what this place is about. Solar powered ice cream sounds fantastic!
@@solarpoweredge I was thinking maybe Solar Sorbet as a brand name...
@christopherd.winnan8701 That's a good one!!
"That's cool bro"
@user-nf4qi2pv1r Peltiers very cool :)
Maybe a idea on this? Think walk in cooler at a restaurant, have evaporator units blowing cold air. Couple years ago used a 120MM aluminum water cooling heat sink with 3 60watt peltier modules and rv fluid but it froze up when got to 1OF. Been thinking of different fluid maybe 100 proof vodka?
@Off-gridPA I'm interested in trying evaporation. Running the heat outside and spraying mist over it. Alcohol might work, it's worth a try!
Right now I'm testing a larger peltier fridge (not the one shown), and it seemed to work well. Ordered some parts to make a better one. Showing the results and test as soon as possible.
@@solarpoweredge one thing about peltier like compressor is cascade refridgeration drop you colder than ambient air water cooling haven't tried that yet an option one needed to turbo charge peltier cooling. RV antifreeze didn't work well as a refridgeration fluid being froze up in aluminum block said earlier. Peltier can go down to almost cryogenic temps pretty wild where cascade refridgeration come in handy. Definitely need a fan in a cooler move cold air around. Air seems or is a insulator without a fan cooling doesn't do much. Help save battery power direct connect pv peltier fridge. 😉✌️
@Off-gridPA A solar peltier fridge (larger than my portable compressor fridge) is already in testing :) the videos don't keep up with workshop unfortunately....
Hey for induction cooker from dc, try a bedini energizer since it sends 300v+ pulses dc and hardly uses any power
It might actually cause a cooling effect if it doesn't work as a cooker, because it has negative resistance sort of
@person52person Thanks I should build one of those Bedinis to experiment