Posts regarding ‘Components’

Efficient Cooking

June 1st, 2009 by Seldom

From Wikipedia:

There are three places in the cooking process where fuel can be conserved; the fuel, the stove, and the cooking pot. The greatest gains come not from the stove itself, but from how the heat the stove produces is used; paying attention to the pot rather than the stove results in the greatest fuel savings. In fact, fuel efficiency in a stove is usually much more affected by heat transfer to the pot than it is by improving combustion efficiency.

* The first way to reduce the amount of fuel a family consumes is simply to use a cooking lid while cooking, which by itself reduces fuel consumption by 40%. This simple change will normally save more fuel by itself than switching to an improved stove.

* The second strategy is similar to the first; use a larger cooking pot. Larger pots are more energy efficient than smaller ones and wide shallow pots are more efficient than tall narrow ones.

* Last, when cooking for a family, switching from a stove that has room for only one pot to cook at a time, to a stove where two or more pots can cook at once will often raise efficiencies by up to 40%.

Also, see this earlier entry about more efficient pots and pans.

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Efficient Pots and Pans

April 13th, 2009 by Seldom

At first I thought this looked like an infomercial gimmick, but I was pleasantly surprised to discover that the Turbo Pot is a legitimate great idea.

eneron-pic1

Eneron makes pots and pans with heat exchanging fins on the bottom to increase the efficiency of a gas range.  They work just like cooling fins on a computer chip heat sink, but in reverse.  That simple change raises the cooking efficiency from 25-30% to 40-60%.

Because the heat transfer is more efficient, the time required to boil water or cook food is reduced.  The test results shown here are for heating 20 pounds of water from 70 to 200 deg F:

eneron-graph1

For more detailed test results see:  Fisher-Nickel | Prototype Commercial Stock Pot Testing

Eneron offers these usage tips on their site:

  • You can lower the burner to save energy while keeping your normal pace in the kitchen.
  • When the burner is on high, you need to bear in mind the cooking time will be shortened.
  • Keep it clean like a standard pot.
  • If soup, sauce, etc. spills out, typically it will go to the tip of the fins and won’t get between the fins. A brush usually cleans up the spill.
  • Treat the pot with normal respect you would have your personal belongings— don’t bang the fins on anything. Even though bent fins at the edge of the pot won’t affect the performance of the pot, a well maintained pot will save you money in two ways in the long run.

I didn’t see any info about where to buy one or how much they cost, but I’m sure Eneron will be happy to help:  Eneron.us

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A Very Efficient Refrigerator

March 8th, 2009 by Seldom

Tom Chalko | A Fridge That Takes Only 0.1 kWh?

This article is about converting a chest freezer into a refrigerator by adding a thermostat to cut off power to the freezer when it reaches the desired temperature, but before it can satisfy it’s own thermostat which is still set below freezing.

We just bought a small chest freezer for $220 at Lowes and I added a $60 thermostat to turn it into a refrigerator. It’s not the most efficient freezer out there, but we needed it in a hurry so we went for convenience. The Energy Star label says will use 280 kWh/year (as a freezer). An efficient refrigerator uses more like 400 kWh/year. A typical refrigerator uses 800-1100 kWh/year.

Today it was sitting on the front porch in the shade with a high temperature of about 80 degrees outside. According to my Kill-A-Watt meter, in 10 hours the new fridge used 0.10 kWh. That would be 0.24 kWh/day or 88 kWh/year. The results aren’t as good as the article, but still really good.

Update: I bought a line voltage remote bulb thermostat from Grainger. Then I cut an old powerstrip cord in half and wired the thermostat into it like a switch. That worked fine, but this thermostat looks like it does the same thing without having do anything but plug it in.

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A Cool Way to Show Window Details

February 16th, 2009 by Seldom

It won’t replace real window details, but a series like this looks like a good way to show a contractor what we want them to do.

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What, Thermal Window Shades Again?

February 7th, 2009 by admin

We’ve been around about this a bunch of times, but never really settled on a decision. The question is whether or not these insulated shades perform as advertised. In the last go round, I think we just finally said, “These things are 1/4″ thick, they can’t possibly be adding R-6 in performance” and left it at that. The other thing that always turned me off was that there seemed to be no one really making them. This company seemed to go out of business for a while, but now seems to have retooled and was featured in Building Green. I’m posting this just to have a record in case we want to review these again.

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Celestine and Harry

January 14th, 2009 by Seldom

I never considered putting the washer next to the oven.

More of Celestine and Harry’s place:  Link

Or visit The Selby main page to view other interesting folk and their surroundings.

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Maytag Sucks

January 5th, 2009 by Seldom

The Maytag repairman must be busy lately. This is from Consumer Reports:

The graph shows the percentage of the following brands of refrigerators bought between 2003 and 2007 that have ever been repaired or had a serious problem. Differences of less than 4 points are not meaningful. Maytag has been the most repair-prone top-freezer brand. General Electric has been among the more repair-prone brands of bottom-freezers. We did not have enough historical data to include either Samsung side-by-sides or Sub-Zero built-in models in the chart. Nevertheless, we do have sufficient data to conclude that, while Samsung has been a reliable brand, Sub-Zero has been repair prone.

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Energy Star Rating BS

January 4th, 2009 by Seldom

Refrigerators are a lot more efficient than they used to be. I knew that, but the last time I was at Lowes I looked at refrigerators, and I was pleasantly shocked by how efficient the new french door models were. They’re not SunFrost, but they’re a lot better than I expected. I think the last time I bought a fridge (15 years ago) it used about 1000 kWh per year. The Energy Star stickers in the new ones were around 500 kWh. And those doors look really convenient.

Turns out it was too good to be true. Consumer Reports published this in October:

If you need a new refrigerator, you might be drawn to the Samsung RF267ABRS. This sharp-looking bottom-freezer is equipped with French doors, through-the-door ice and water dispensers, and many other inviting features.

This refrigerator might also appeal because it carries the Energy Star badge of honor, thanks to its claimed 540-kilowatt-hour annual consumption… But in our comparative energy tests, which are tougher than the Department of Energy’s and better resemble how you use a refrigerator, it used 890 kWh per year.

There’s an even larger difference between company claims and our measurements for the LG LMX25981ST French-door fridge. LG says it uses an Energy Star compliant 547 kWh per year. We found through our tests that real-life energy use would be more than double.

Why the energy-use gap? DOE procedures call for a refrigerator’s icemaker to be off during testing. On the LG, turning off the icemaker also shuts off cooling to the ice-making compartment, located on the refrigerator door.

Consumer Reports also points out that companies test their own products rather than third parties, so it’s questionable how much they can be trusted even when the tests are better designed than this one. However, the DOE just reached a settlement with LG over it’s inflated refrigerator efficiency claims, and it seems to be more than a slap on the wrist for a change:

LG promised to replace a circuit board in each of the several hundred thousand refrigerators covered by the agreement. The circuit board will (presumably) result in lower energy use though it’s not clear from the statement how this will be accomplished. Replacing the circuit boards will require an LG representative to visit every home with a refrigerator. In addition, LG will reimburse owners for the additional electricity used caused by this design for the average lifetime of the refrigerators (but paid in advance).

The settlement should include LG paying to sequester the carbon released, too.

Home Energy

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Ipod / Iphone Entertainment Center

December 14th, 2008 by admin

This is a stereo system that uses either and IPod or IPhone as the music source. It’s by Bose. If you’ve never heard one of their systems, they are pretty amazing and are famous for creating full bass response in small packages. The cost is $300, which seems pretty good to me and will go down quickly since this is a new product. (The older version for IPod but not IPhone is selling for $220.)

I’m thinking that this unit in combination with a flat screen monitor with built-in DVD player would cover the “entertainment center” needs of a Nauhaus. I imagine a bay for this stereo, one for the monitor, and one for a laptop with a connection to the monitor. With a laptop remote like the one picture below, you could play web videos and internet radio from the lazi-ass comfort of your sofa. I’m not promoting a couch-potato lifestyle here, but am interested in equipment that will allow us to access web information as a replacement for corporate media info-tainment. You know, sitting down to watch Democracy Now! with your salad picked 15 feet away in the kitchen garden. That kind of thing.

– Clarke

Bose SoundDock

Laptop remote

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Drying Cabinets

December 1st, 2008 by Seldom
Asko Drying Cabinet
Asko Drying Cabinet

From Wikipedia’s article about drying cabinets:

Since the 1980s, drying cabinets have been common in European laundromats, especially in the Swedish Tvättstuga – a laundry room in Swedish housing cooperatives. With the large size of the drying cabinets and relatively small size of European homes, drying cabinets have been almost exclusively found in self-service laundry facilities.

With the steadily increasing size of American homes over the past decades, the laundry room has increased in size and functionality as well. To meet the increasing demand for luxury appliances in the US residential market, a handful of appliance manufacturers (including Asko and Staber) have begun to supply drying cabinets for the home within the last few years. A typical residential drying cabinet is approximately the size of a narrow refrigerator, and is used to supplement traditional tumble dryers.

Here’s a picture of a Swedish drying cupboard: Link

Also, look at urbanclotheslines.com

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