What causes ice to build up on the bottom of the top shelf of a stand up ice cream freezer with glass doors
Just wondering, because ice is building up on the bottom of my top shelves
in my ice cream freezer. l work in the frozen food department
of a grocery store.
First of all, the ice is coming from moisture. The real
question is 'where is the moisture coming from?'. Understand that the
reason the ice is forming on the bottom of the top shelf is because since
the moisture entering the area is warmer than the ice cream freezer
(remember, hot air rises), the moisture will thus rise & stop when it hits
the bottom of the top shelf. Check the seals on the glass doors. Also check
to make sure insulation has not been removed around any exhaust or circulating fans. Lastly, make sure the doors are simply not left open. Note: the term 'hot air rises' does not necessarily mean it is 150 degrees, it just means it is warmer than the surrounding air.
I believe it is moisture that floats to the top, collects &
freezes. When people open the freezer doors & the cold air in the freezer
meets the warmer air on the other side. You get moisture in a teeny tiny
droplet form that rises.
Do you ever notice when you open & close the doors you see mist in & out
swirling around? It floats to the top freezes, & everytime someone opens the door, this process repeats. And then the thin film of ice at the top just keeps collecting & building up til you have a layer. You can get rid of it with warm water & a wash cloth.
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