Ask HN: DIY ice bath equation for water cooling

I am making an DIY ice bath at home. I have about 40 gallons of water in a tub and a chest freezer. Prior to cooling, the water is typically around 70 degrees F. I am thinking about getting a coil and running water lines through the chest freezer to circulate the water, but I don’t want to waste money and cut holes in the freezer if it’s not going to work. I would like to cool the water to as close to 40 degrees F as possible. This 25’ coil would easily fit in the freezer. https://www.northernbrewer.com/products/copperhead-immersion-wort-chiller?variant=30232177049644&gclid=CjwKCAjw3ueiBhBmEiwA4BhspOWqTsk7pH3VvEQq6-HeDgUodqlCS51VMeE3TM28-Ak07fVyHvHotxoCmb4QAvD_BwE I would appreciate any advice the HN community has to offer!
Story Published at: May 9, 2023 at 12:55PM