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Re: Water: Where will it come from in 2050?
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Originally Posted by charles brough
The idea of a means of extracting moisture from the air seems highly suspect to me---even in a humid climate. Sure, it can be done, but how much energy does it take? That is the crucial question, and it was not even raised!
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Quote:
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Dehumidifiers can consume more than $150 a year in energy, so look for models that are Energy Star-qualified (they'll carry the Energy Star seal), which are 10 to 20 percent more efficient than non-Energy Star units.
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ConsumerReports.org - Dehumidifiers can control humidity levels and keep your home free of mold and mildew
Of course they don't say how long they are kept running, but let's assume constant usage.
Let's use an average size of 30 pints per day.
Dehumidifier Basics : ENERGY STAR
That's 10950 pints per year which equates to about $0.014 per pint. That's about 11 cents per gallon. That's pretty cheap.
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Hypography Science Forums Moderator
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"There are no passengers on Spaceship Earth. We are all crew." - Marshall McLuhan
"We must not forget that when radium was discovered no one knew that it would prove useful in hospitals. The work was one of pure science. And this is a proof that scientific work must not be considered from the point of view of the direct usefulness of it." - Marie Curie
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