cooling box isolation?

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kaidepuu
Posts: 12
Joined: Wed Apr 27, 2016 1:47 pm

cooling box isolation?

Post by kaidepuu » Sat Sep 09, 2017 6:06 pm

I want to install a compressor to refrigerate the original pentry cooling box. Is there some isolation originally or must I rebuild it?

Bob McGovern
Posts: 283
Joined: Fri Oct 26, 2012 3:08 am
Location: Wyoming, USA

Re: cooling box isolation?

Post by Bob McGovern » Sun Sep 10, 2017 5:22 pm

Our Ballad's ice box was quite large -- over 2cuft (57 liters) -- but had almost no insulation (2mm Ensolite foam on outside) and a drain in the bottom, letting the cold escape. That is fine for a daysail, or maybe overnight in a cold climate. I rebuilt it using a combination of polystyrene foam board on the inside and foil-faced polyiso on the outside. The drain went away; we will remove meltwater with a hand pump. Interior volume is now only about 1cuft (28l), but that is still enuf for a big block of ice and all the food we want to keep chilled.
Imageicebox by Robert Mcgovern, on Flickr

Edit: I put scrap Formica (High Pressure Laminate) on the outside facing the engine compartment, because polyiso foam will burn if exposed to a flame source.

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