Fired up my chiller and this tubing sucks from Lowes going to get more tomorrow and give it a try. I am using a ps from a computer to power pump fan and peltier
#K40PeltierCooler
Wow, nice. Please keep us updated, I’m in the process now of putting a parts list together to make my own peltier cooler.
Nice idea with the thermos and Peltier! Do you think the thermos will hold enough water? to keep it cool?
What is the black stuff around the pipe nipples?
@laurence_champagne new tubing installed no leaks just fired it up and timing now to see how long it takes to drop the temp.
It’s 64oz may need to had one or two more peltier. Testing how efficiently it cools now.
I had to drill into the thermos and sealed the fittings in with JB weld. Will clean up after testing
Is the JB Weld flexible? Just curious how it’s going to handle the rounded shape of the thermos.
It’s an epoxy that you mix and hardens over a couple of hours. I’ve used it for all kinds of stuff it’s like the duct tap of epoxy.
After it cures no it’s extremely hard you can sand it drill it out and even tap it
Good to know that you can tap it as well. I’m just using the good ol bucket of water solution for now but have been thinking of these thermoelectric coolers for sometime. I might give this a go.
What kind of thermal control? On/off, PWM, Voltage reg, Current reg. ???
On off thermostat
@William_Kearns @donkjr Don, here we are with the same issues I have. My first thought was/is the same as Williams… an on /off thermostat…but the more reading I do the more I realize, though it may work this way, there are problems that can occur and we could avoid these by being able the adjust voltage or current within that sweet spot .
William, my research says we need to have available Peltier capacities greater than required and do this efficiently, you need to keep the operating current somewhere within 20 to 60% of the Imax of the Peltier elements . So there is a need to be able to adjust the PS voltage/current down. Take a look at this video. (Don, one of your links turns out to be the source this same video)
At this point for me I need to come up with a way to control the voltage and I think William you may come up against this also.
