efficient 20 cu' Refrigerator/Freezer [RE-wrenches]

[Joel Davidson]

Wrenches,
I wrote a simple 1-page "Calculate Energy Payback and Lifecycle Savings" info
sheet to encourage customers to buy energy efficient lights and refrigerators.
Email me off-list for a copy.
Happy Holidays,
Joel Davidson

matthew tritt wrote:

> James,
>
> This is also a subject around our house lately. We have a 1950 GE, 12 cu ft
> "Combination", with a tiny freezer, which needs de-frosting 2X per year. I
> love the thing for it's looks and because it uses about 1.2 (less in a cool
> year) kWh a day, and it's QUIET. Most new reefers seem to run all the time,
> the old ones don't. But, because the freezer's so small, there are forces at
> work to get a new one. Oh well.
>
> We found an 18.2 cu ft Kenmore that uses 479 kWhrs/yr, comes with an ice
> maker, and costs $450.00. Not as efficient as the 20 cu ft one you found,
> but also not as expensive. We were going to get a RF 16 Sunfrost, but, if
> you really think about it, would take years and years to make up such a huge
> initial price differential; I figure well over 20 years @ $.12 per kWhr.
> Hardly worth it!
>
> Matt
> ----- Original Message -----
> From: "James Lamb, Middle Fork Engineering" <j.lamb at pecorp.com>
> To: <RE-wrenches at topica.com>
> Sent: Monday, December 02, 2002 8:52 AM
> Subject: RE: efficient 20 cu' Refrigerator/Freezer [RE-wrenches]
>
> > Todd
> > In 1992 I bought a Brand New cycle defrost 13.4 cubic foot General
> Electric
> > refrigerator for $ 285.00 one day sale 8 years ago. Its design energy
> usage
> > is 2 KWH/Day
> > Its still running using less that a Kilowatt a day. Since the running time
> > is less that half the time it should last twice as long.
> > I did this 10 years ago. I guess the manufactures getting there? Why does
> it
> > take so long?
> >
> > The cycle defrost refrigerator requires you to defrost the freezer section
> > only about 3-4 times a year. The freezer has its separate door and is on
> > top. The refrigerator section is on the bottom with its separate door and
> > has an evaporator (cooling) coil in it.  When the compressor is off, the
> > temp in the refrigerator section (38 degrees) melts the ice on the coil.
> > There is a small heater on that coil that turns on automatically when the
> > compressor is not running. This coil is designed to keep the refrigerator
> > section defrosted in the worst of conditions. I disconnected it and there
> > was  no frost build up even on hot summer days. If the house is cold the
> > refrigerator would not work as much and the freezer would still be below
> > freezing but the ice cream would be soft.
> >
> > I insulated the inside the freezer section on the non coil surface area
> > (right and left side of freezer). I also insulated around the outside of
> the
> > freezer and refrigerator.  I carefully tilted the evaporator coil  on the
> > back of the refrigerator to increase air flow around it. I also raised the
> > refrigerator a few inches off the floor for more air flow around it. By
> > having the freezer on top, cold travels down, so this helps to use the
> cold
> > better. That's why the old wooded refrigerator requires  the ice to be
> > placed on top.
> >
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: Todd Cory, Mt. Shasta Energy Services
> > [mailto:toddcory at finestplanet.com]
> > Sent: Monday, December 02, 2002 10:31 AM
> > To: RE-wrenches at topica.com
> > Subject: Re: efficient 20 cu' Refrigerator/Freezer [RE-wrenches]
> >
> >
> > These are still pretty dismal numbers considering our sunfrost uses only
> 140
> > kWh
> > a year. It is hare to understand why manufacturers are unable to make a
> > standard
> > refrigerator more efficient. Yes ours is an RF12, so not as large, but
> even
> > running 2 would still use about 1/2 the energy use.
> >
> > Todd
> >
> >
> > "David Palumbo, Independent Power & Light" wrote:
> >
> > > Shopping for efficient RF, 20 to 22 cubic feet.
> > >
> > > Have seen: Kenmore 20.5 cu' #622424 retails for $644 and uses 458
> kwhr/yr.
> > >
> > > Kenmore 21.6 cu' #72202 retails for $899, add $ 200 for stainless
> exterior
> > > finish, uses 457 kwhr/yr.
> > >
> > > What were the numbers on the efficient Maytag that people were talking
> > about
> > > a year or so ago?
> > >
> > > Thanks,
> > >
> > > Dave
> >
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