Article 1049019 of alt.home.repair: Path: news.misty.com!not-for-mail From: nicksanspam@ece.villanova.edu Newsgroups: alt.home.repair Subject: Re: Garage heater kit for fridge? Date: 30 Sep 2008 12:17:47 -0400 Organization: Villanova University Lines: 37 Message-ID: References: NNTP-Posting-Host: acadia.ece.villanova.edu X-Trace: max.inside.misty.com 1222791469 28587 153.104.44.130 (30 Sep 2008 16:17:49 GMT) X-Complaints-To: abuse@misty.com NNTP-Posting-Date: Tue, 30 Sep 2008 16:17:49 +0000 (UTC) Xref: news.misty.com alt.home.repair:1049019 Wayne Boatwright wrote: >>>>>How cold do you plan on keeping the kitchen? >>>> >>>> I kept it 36 F one year. >>> >>>That's beyond my comprehension. >> >> It's easy to do with the kitchen off the back of my house. With 2' stone >> walls (C ~ 50 Btu/F-ft^2) inside R10 insulation and RC = 500 hours, >> the kitchen temp changes slowly. >> >> Starting at 36 F, it would cool to 30+(36-30)e^-(24h/500h) = 35.7 over >> an average 30 F January day. Leaving the kitchen door to the rest of >> the house open for a few minutes a day makes up for that cooling. With the door to the rest of the house closed, it would cool from 36 to 32 in -500ln((32-30)/(36-30)) = 549 hours, ie 23 days. >Being able to do it is not beyond my comprehension. Why anyone would >really want to do it is beyond my comprehension. Pity. >You are not saving siginficant energy, since to be able to use the kitchen >you're robbing other parts of the house of its heat which has to be >compensated for each time you do it. Au contraire, the fridge uses less energy in a cool room, and the room itself needs less heat if it's cooler on average. >As to where to find what you're looking for, I have no idea. Danfoss sells $24 freezer stats... Nick