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Dale.Elson
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re: When a worthy design priority has unpleasant consequences
Dale.Elson   4/22/2011 6:48:49 PM
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I would like a dishwasher that actually washes my dishes. The newer water-efficient model that I have is fairly worthless unless I first scrape and rinse off the dishes. Which of course uses more total water than just throwing the dishes into the old dishwasher. Fail. Now, perhaps if I added some ultrasonics to break up the chunks....

agk
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re: When a worthy design priority has unpleasant consequences
agk   4/22/2011 8:30:05 AM
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We needed a low cost electronic ballast with a good power factor 0.95 and above.Also the ballast need to be energy efficient to 95% and above.The light output to remain within 10% over a 10% plus minus change in the power supply voltage.And many more design requirements like CE mark,EMC specs,THD.This was crucial and probably when we go for higher and higher degree of perfection the cost accordingly raises and this to be compensated by large volume manufacturing.

old account Frank Eory
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re: When a worthy design priority has unpleasant consequences
old account Frank Eory   4/22/2011 12:09:04 AM
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Here's another example: the low-flow toilet that began being mandated in the U.S. starting in the 1990s. They use far less water than the older designs -- a very worthy goal -- but they have also created numerous problems for some municipal sewage and water treatment systems.

DarkMatter0
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re: When a worthy design priority has unpleasant consequences
DarkMatter0   4/21/2011 7:53:51 PM
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Nonsense? So I guess you always travel by foot, generate electricity by burning methane from compost and use an outhouse rather than indoor plumbing. Human Factors Engineering (HFE) is always an important consideration in the trade space. An elegant solution is not lopsided.

seaEE
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re: When a worthy design priority has unpleasant consequences
seaEE   4/21/2011 5:54:41 PM
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I spoke on the subject of appliances with an expert of many decades, yep, Mom. Mom likes quality more than energy efficiency, and is concerned that while energy efficiency has been heavily promoted, quality has meanwhile suffered. Mom has consulted with other moms of many decades of experience and all agree the new stoves are worse quality-wise than the stoves of yester-year, that would last 40+years. The new stove surfaces are harder to clean. And you open the oven door and your face is hit with a blast of scalding humidity. But...they are energy efficient. They meet spec, but not quality. The new refridgerators have all sorts of fancy shelving and dohickeys...that are more difficult to clean. An old Frigidare could last 40+ years. Can the new appliances even come close? If we are building more efficient products, but they fail in service after 7-10 years, are we not just filling our landfills with a bunch of junk--like four times as much junk? How much energy is saved if you have to manufacture four times as many appliances? Today's appliance industry needs to consult with yesterday's moms to find out what "quality" really means. They've got the efficiency down pat, but need to now focus on the whole product. p.s. word has it that Speed Queen makes a good washing machine. I heard it from a 70-something expert, who washed clothes for a hubby and five kides, and who had been through two previous machines in short order. ;)

mranderson
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re: When a worthy design priority has unpleasant consequences
mranderson   4/21/2011 5:40:19 AM
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I would say frankly that your argument is nonsense. The economic and environmental costs associated power hungry electronics (oil, coal, national power grid) far outweigh the inconvenience of having to wait longer for your chores to complete. Energy efficiency is an example of good management. The real engineering issue tends to be the opposite. "Poor management choices/lack of strategic thinking" lead to bad designs.

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