ie8 fix

Water, water everywhere

By | December 23, 2009, 6:24am PST

Summary: Water worries becoming more central to the questions of electricity production.

Yes, there’s plenty of water on the earth. But most of it is in oceans, or clouds. Less than 5% of the earth’s water is potable at any one time. And modern, industrial-scale energy is often derived from a process that uses enormous amounts of water. Take coal…or nuclear…or natural gas. All boil lots of water to turn turbines to make electricity. You may hate dammed rivers, but at least that water is only drained of its kinetic energy and then passed on in pretty much its original state. Dams essentially tap into gravity as a source of energy. So far, not a single geologist has warned us of global gravity depletion caused by human activity. Whew.

Here’s an interesting look at…ready for this…your water footprint. Sorta like the one you leave as you walk away from the swimming pool toward the cabana.

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Topics

Disclosure

Harry Fuller

http://blogs.zdnet.com/green/?page_id=2

Biography

Harry Fuller

Harry Fuller is a media veteran, having spent decades in TV news in the San Francisco Bay Area. As GeneralManager of KPIX-TV (CBS) he founded one of the nation's first TV station websites in early 1995. He was News Direcor at TechTV when it was founded in 1998. In 2001 he moved to London to become Executive Producer for CNBC Europe. Four years later he returned to San Francisco as Executive Editor for CNET's news.com.

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Waste?
sys_engineer 24th Dec 2009
This article should have had a bit more research prior to
posting.

As many other folks have commented, nuclear and coal
power systems use closed water systems.

What a waste of time. Now I'm going to read about
computer stuff.
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steam generation in a nuclear plant...
jtiner Updated - 23rd Dec 2009
Steam generation in a nuclear plant is a closed system. That means there is very little loss of the water.

This is why you never take the word of a blogger when science is concerned. Most, if not all of his arguments are political idealism and not scientific fact.

Mr. Fuller, I realize you came into your own during the 60's. I also realize that your probably a real hippie. That, in and of itself, is not a bad thing but the socialist leanings of those times are not a good thing for the people of this planet nor are they good for the planet itself. I know you are doing it to be a good person and to feel good about yourself but if you're going to continue to post, maybe you should get the facts right and not make statements intended to denigrate certain technologies just because you don't like them.

Ok, I'll give you the point that there may be more loss due to the cooling water that is used. In my city (the city owns the company that generates the power), we have some man made lakes that are used for cooling of the coal power plants. They are dual purpose in that they are also used for recreational activities. They have a lot of surface area and that may lead to more evaporation. How much more evaporation than if they hadn't been created? I couldn't guess but if the streams and creeks that fill it would have had the bulk of the water run into the Gulf of Mexico if not for the reservoir and therefore wouldn't have been potable anyway.

Just keep in mind that whether you use NG, Nuke, or coal to make steam, that steam is generally made in closed system that means the water is regularly recycled with little loss.
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Learn to spell, jtiner - looking ignorant
BonMot Updated - 23rd Dec 2009
undermines your message. You may also want to read the article cited in the blog before shooting from the hip with erroneous misstatements. Water waste in energy production is a real thing - so your (not you're) attacks are way out of line. Ignorant rants don't further intelligent discourse.
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Looking Ignorant
thinking about consequences 23rd Dec 2009
Before you spend the rest of your life applauding Harry's less than rigorous arguments, study the real issues.

Water waste comes predominately from chemical processes in industrial production and agricultural waste. The small amount of water lost in closed-system electrical power production is trivial in comparison. And ultimately, that "waste" water enters back into the earth water cycle.

OTOH, take a look at a paper mill, and see how it sucks a decent stream dry - in addition to the deforestation and transportation pollution needed to get the pulp.

Post-mine processing of ore is another gross consumer of otherwise could-be potable water.

But ranting about water usage of power plants is all well and good - propose a viable alternative that people are willing to buy into.
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Ignorant???
jtiner 23rd Dec 2009
I am not a professional writer and wrote that reply "shooting from the hip" so give me a break. Glad you're the spelling king though. I'm sure I can find many mistakes just by looking into your previous posts and those of Harry Fuller's writings and I don't see you attacking him or calling him ignorant...

Now, as for the substance, tell me where you noticed the high levels of water waste in energy consumption? My argument stands and you are the fool.
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Jtiner and Tinker: Both of you are
ITLeader 23rd Dec 2009
talking without any proof. Just saying "My argument stands" or "Water waste in energy production is a real thing" without any kind of proof is not valuable.
Leave spelling out of it and provide some links. I'm interested in whatever resources either of you can provide, as this is not an area I am very conversant with.
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links
jtiner Updated - 23rd Dec 2009
Try this for a very basic idea of how it works.

http://www.explainthatstuff.com/powerplants.html

Also notice that the article that HF links to says "Photovoltaic solar panels - the kind found on roofs, schools, office buildings and hotels and at wineries and farms - create electricity, not heat." and also says that power generation not performed by solar panels uses lots of water. He doesn't say if the water is reused like many hydro-electric plants and thus water loss is minimal nor does he actually say how much is lost at all.

What else would he say when he says this about himself: "Tom Rooney, of Novato, Calif., is the chief executive officer of a solar power company"

Sounds more like a sales pitch than fact.
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Thanks!
ITLeader 23rd Dec 2009
I appreciate the link!
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RE: Water, water everywhere
BonMot 23rd Dec 2009
A very significant blog, albeit delivered tongue somewhat in cheek. The water situation on this planet is dire. Google this and you'll find more links than can practically be included here. Energy of the future needs to be generated without harming or diminishing what precious potable water this planet still has. Thanks Fuller for another timely and with-it post.
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Absolutely.
frgough 23rd Dec 2009
Because, of course, we all know that when you boil water it migrates to
an alternate dimension, never to be seen again.
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By the way, the phrase is "tongue in cheek" so you probably meant to say "somewhat tongue in cheek" instead of "tongue somewhat in cheek". This kind of wording makes you look ignorant and devalues your opinion.
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Speaking in tongues
Agnostic_OS 23rd Dec 2009
Thankfully the English language is very flexible, and in a forum such as this the strictures of university grade English language usage should, and thankfully is, not required.

But then again this maybe tongue-in-cheek.
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fact checking
Linux Geek Updated - 23rd Dec 2009
Dams essentially tap into gravity as a source of energy. So far, not a single geologist has warned us of global gravity depletion caused by human activity. Whew.
It's actually the heat mostly from the sun that causes the water to evaporate, rain and flow downstream that produces electricity.
Gravity is merely a catalyst not the source of energy.
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Or, another version..
snberk341 23rd Dec 2009
Heat provides the energy to evaporate the water and
lift it up into the clouds (also solar energy to create the
winds that move it around and up). This energy is
enough to overcome the gravity that wants to pull it
down. However, once its "up" it is gravity that gives
water the momentum to move down that a dam taps
into.

While solar energy may have lifted it up, hence making
it usable - it is still the dropping bit that we are taking
advantage of. So, Harry is still correct.... if not
necessarily accurate.
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Harry, after your spectacular failure to make a dent into the critical thinking skills of ZDNet readers with your alarmist enviro-stories based on fake date, it's now 'water'?

Is there anything in your life that doesn't scare you and make you want to hide under your bed?

Just start living man. Stop wasting ZDNet space - or just bring us some IT information.
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Yes it's water
ITLeader 23rd Dec 2009
Pull your head out of the sand and look around.
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The world's water problems
frgough 23rd Dec 2009
can be solved with cheap, abundant energy. In fact, nearly all of the
world's resource problems can be solved with cheap abundant energy.
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I hope we find that energy soon!
ITLeader 23rd Dec 2009
Fusion maybe?
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No, fission.
frgough 23rd Dec 2009
It's a mature technology that produces minimal waste. The reason we
aren't using it is because the anti-nuke zealots have so effectively
propagandized the population into thinking radiation is the deadliest
substance in the universe.
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RE: Water, water everywhere
proton_z 23rd Dec 2009
Who really cares....
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RE: Water, water everywhere
jtiner 23rd Dec 2009
I never meant for my previous post to be anything except a commentary on Tinker's grammar after he tried to avoid my comments and instead ding me on one incorrectly spelled word.

Just trying to show high-and-mighty Tinker how throwing stones when living in a glass house is bad.
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Who is this guy???
linux_kernel 23rd Dec 2009
Why is this article on a 'tech site'?
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Why linuks in tech site?
meusterer 23rd Dec 2009
It should be in crap dump site!
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Waste?
sys_engineer 24th Dec 2009
This article should have had a bit more research prior to
posting.

As many other folks have commented, nuclear and coal
power systems use closed water systems.

What a waste of time. Now I'm going to read about
computer stuff.

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