I had this discussion with a couple friends last week. The general consensus
was that ice from a good commercial ice plant seems to contain less trapped
air, resulting in denser ice that lasts longer.
Don
----- Original Message -----
From: "David Beierl" <dbeierl@ATTGLOBAL.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, August 25, 2012 3:10 PM
Subject: Re: Fridge Burner box

> At 05:29 PM 8/25/2012, Dave Mcneely wrote:
>>  The worst is if the only ice available is from convenience stores
>> that freeze their own.  That ice is not cold enough.
>
> Howzat?  Do they use special water?
>
> The block of ice would have to be at about -256F (-160C) in order to
> double its cooling capacity.  Ice stored at 0F (~-18C) gains about
> nine per cent.
>
> Yours,
> David