Dave, 137Whrs/day is less than 3Ah/day on a 48V battery. Not really that large a hit if the battery bank is not too small, even if you have 10 cloudy days in a row.
Adding more PV will give you more charging power even on a cloudy day. Even if you only get 20W out of a 250W module, which would be something like 100 Whrs over the course of a cloudy day (most of the insolation is from diffuse light on a cloudy day, so you would see that 20W over more hours). Adding a 250W module (if you can add just one) would be cheaper than getting a SunFrost. Brian Teitelbaum AEE Solar -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Dave Palumbo Sent: Wednesday, January 09, 2013 12:23 PM To: [email protected]; 'RE-wrenches' Subject: Re: [RE-wrenches] Fridge recommendations? Howie, I usually agree to the Kenmore/Sears recommendation but the closest Sears is coming in with is with 18 cu' units that are listed as using 385kWH/yr. Higher than I'd like. This is for an off grid home and the extra 50 kWh/yr translates to 137 Watt hours per day. For this particular home it will mean an average of 2.5 hours per day of generator run time during our cloudy snowy winter. This is for a small rental house on my property and I want to keep the gen run time down as low as possible. Non-winter times will not be a problem as the solar array will carry the RF as well as all the other loads in the home. Dave -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Howie Michaelson Sent: Wednesday, January 09, 2013 3:01 PM To: RE-wrenches Subject: Re: [RE-wrenches] Fridge recommendations? Dave, I've always recommended Kenmore (Sears) which we have - they are reliable, quiet, and a good price point typically (especially if you get it on sale which them seem to have every other week). If you look for the right model, you should be able to get one that comes close to that usage, especially in the smaller models. Sears' website lists the kWh yearly usage last time I looked. Howie -- Howie Michaelson NABCEP Certified Solar PV InstallerT Catamount Solar, LLC Renewable Energy Systems Sales and Service VT Solar Electric & Hot Water Incentive Partner http://www.CatamountSolar.com 802-272-0004 On Wed, January 9, 2013 2:44 pm, Dave Palumbo wrote: > I'm having difficulty finding a RF in the 16 to 20 cu ft range that > uses less than 350kWh/yr. All of the GE units listed by Energy Star as > 300 to 311kWh/yr are no longer being manufactured according to my > local appliance dealers. > > > > I see a Fridgidaire 18.2 cu ft that uses 335kWh/yr (reviews that I see > on this unit complained of loud clunky noises). > > > > Sun Frost units are too pricey for this application. > > > > Any recommendations? > > > > Thanks, > > Dave > > > > David Palumbo > > Independent Power LLC > > 462 Solar Way Drive > > Hyde Park, VT 05655 > > www.independentpowerllc.com > > Vermont Solar Partner > > 25 Years Experience, (802) 888-7194 > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
