Posts Tagged: ‘air conditioning’

There are dozens of new things that we have learned from the BP disaster in the Gulf of Mexico. We have learned about blowout preventers, methane hydrates, oil booms, etc.

Two facts have been especially intriguing if you are interested in green technologies. First, the deep water in the Gulf is very cold. This page provides a nice graph that shows how temperature decreases with increasing depth in the ocean. The second thing we have learned is that it is pretty easy to put pipelines in the Gulf – there are already hundreds of them.

What could we do with all of this cold water? There are two technologies that could take advantage of it. The first is air conditioning, as described in this video…

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If you take a look at How Air Conditioners Work you can see that a typical air conditioner is a very simple thing. It has an electric motor that runs a compressor, and everything else in the system is passive – tube on the hot side and cold side, plus an expansion valve.

The only problem with the existing system is that the electric motor needs a lot of electricity to spin the compressor. In the summertime, a sizable portion of the power grid is dedicated to feeding the electricity needs of air conditioners.

Now there may be an alternative that uses a lot less electricity…

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Louis Braille wasn’t born blind, but when he lost his sight at the age of 3 his life radically changed. He didn’t let this blindness prevent him from succeeding — in fact, it led directly to his Stuff of Genius. Learn more about Braille in this podcast.

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I’ve caved to the summer heat. For a while, I was determined to fight the good fight by turning on fans, wearing shorts and sandals exclusively and leaving doors ajar to let the fresh breezes blow in. But when I trudged inside after mowing the lawn and was greeted by a blanket of warm, stale air, I hit my breaking point. Finally, reluctantly, I’ve turned on my air conditioner. And in exchange, the prospect of skyrocketing energy bills haunts me.

If you’ve noticed your power bill creeping up in recent weeks, you aren’t crazy. The kilowatt per hour rate, the pricing unit for electricity, is going up as summer energy rates set in. Moreover, Energy Star states that the average household shells out $1,000 per year on home heating and cooling, which sends shivers down my spine.

But there are ways to stay comfortably cool indoors without going broke. You can’t live in arctic conditions, but you won’t have to swelter through the night, either. Start out by setting the thermostat to 78 degrees, which most energy experts advsie as the optimal summer temperature. Then, follow the five tips below to shave off more kilowatt hours from your next power bill.

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