FRUGAL LIVING 24
UTILITIES
REFRIGERATION
As touched on before, you
can relatively cheaply provide conventional refrigeration by buying the plug in
commercial unit ( around $50 ) that is built specifically to turn a chest
freezer ( under $200 ) into a fridge.
Running around ten hours a day you can probably assume 400 watts-about a
third of a conventional unit. If you
were paranoid about your solar exposure and bought extra panels to take into
account cloudy weather, call it $500 for 300 watts. You’ll need a few extra batteries to get you
through a week, so just call it an even thousand bucks. Not much more than a regular household fridge
and probably cheaper than a propane unit ( which are energy pigs-two tanks a
month ). If you kept the unit in a root
cellar or at least on the north side of your home you should enjoy a fridge
with minimal cost. Of course, there are
those times when the sun just refuses to come out. I have enough issues with minimal energy
draw, so I’d hate to chance it. I think
an actual old fashion ice box is a much better bet. That only takes 90 watts for an hour or two
and that is only during the non freezing season when you get all that sunshine
anyway ( “sunshine to dollars”
book. Worth every penny, the source of
most of my solar experiments. I’ve also
been told it is free online, so do a search ).
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Now, an ice box is good
enough for most of our needs- dairy and condiments and keeping meat for half a
day until cooking. I never cook
leftovers, and if you do that is just a lazy habit that cost you $1,000 for a
fridge. Dairy you can actually keep
without a fridge, as well as all condiments except mayonnaise ( in the summer,
I don’t trust it at all, but the rest of the year I can safely keep it a week
without worry, down underground ). A
fridge is really not strictly necessary although nice to have to assure food
safety. For dairy, cheese keeps just
fine for the hard variety if you wrap it in a slightly vinegar wetted
cheesecloth. Butter is kept a week,
easily, if you place it in a butter crock which is an upside down butter dish
in a water filled larger dish. The water
keeps the air out ( clean the butter dish after each week when you add
butter. And, no need to buy a crock,
just use a thin glass for the butter placed upside down in a larger glass with
some water in it ). I don’t need either
method, as my underground hovel stays cool enough- in fact, the butter only
softens in the hottest summer months in which case I only bring home one stick
at a time ( I freeze meat at work, one of the perks of having walk-in freezers,
and bring home a bit at a time, and keep the butter there during the summer ). Eggs keep if you place them in a large enough
container so water covers all of them- same principle as the butter. As for not having a freezer, I used to buy
that nights dinner meat each evening after work. Once that got too expensive I started using
works freezer. If you have to, can your
meat rather than freeze it. That will be
my next step if I’m ever unemployed ( if I even can afford to do so-it might be
seven days a week lacto-vegetarian rather than my current two ). To duplicate living underground, when you actually
don’t, just dig as deep a hole as you can manage and have an insulated cover
for it. Lower a five gallon poly bucket
on a rope, with a twist off top, with your dairy inside. That should stay pretty cool.
END
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A good summary of off-grid refrigeration options here, including what I think is the overrated "zeer pot":
ReplyDeletehttp://www.notechmagazine.com/category/refrigeration
For myself, I built a variation of the "California cooler". I live on the Washington coast and summer days here seldom exceed 75F and night temperatures are generally between 20 and 45F year round.
I built an insulated (4" foam) pantry inside the north side of my garage and plumbed a thin 6" aluminum duct outside the building where it is always in the shade. The duct runs from near the floor inside the panty, through the wall, up outside the garage, then back inside at to the top of the pantry. It pumps naturally. The heat in the air radiates through the duct wall, cooling as if falls, pulling more warm air in from the top and dumping the cooled air back into the bottom of the panty. A closed cycle California cooler. I wanted closed cycle to avoid pulling in humidity always present here on the coast. Temperature inside the panty has never exceeded 44F over the last two years. I put a thin plastic film flapper over the bottom exit to prevent reverse flow when the temperature outside is higher than inside. Basically it gather the cold night temperatures and stores them during the day. During the winter when days are below 40 and nights are below freezing, I seal it off to prevent bulk freezing of everything in the pantry.
Damn, that's cool. I mean groovy.
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