Recent content by Dave Burch

The holding box only fits in one spot. It is 500 mm long X 220 mm wide in a slight L shape, it is 165 mm deep. It is insulated. The Stainless tank will sit inside the holding box The stainless tank will be 499 X 219 L shape X 75 mm deep with sides continuing up to 165 mmm. So the stainless box...

Thanks everyone. Will stay away from glycol. Tank fits inside another insulated box. Size can not be varied. Ice packs wear thru. Tank will be fully sealed via welding after filling with liquid, no vents. Have trialled a few plastic containers with ice and blue ice and find that expansion...

Thanks for the info. I found a liquid density chart but all the liquids denser than water sounded dangerous ie acids. Glucose looked ok but it expands more than water. Glycol is denser, can't find anything on expansion though and not sure of cost as I require 7 litres. Will keep searching

The Blue Ice stuff expands when frozen, so it's not suitable for what I want

Not suitable, must be a frozen tank

Would frozen Olive oil stay as cold for as long as frozen water. I am making a small Stainless Steel tank that I will put in freezer and freeze to aprox -10 c . I don’t want to use water because it expands when frozen and will push my tank out of shape. I read that vegetable oil doesn’t expand...