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PostPosted: Dec 16th, '08, 22:46 
Bordering on Legend
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That should have been #91 and #128?


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PostPosted: Dec 17th, '08, 04:34 
Bordering on Legend
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One issue with power plants is that new power plants have to work within current environmental constraints. Old plants are grandfathered into the environmental constraints placed on them at the time of construction (40 years ago, that wasn't much).

If an old, dirty plant has to pay 3cents per Kilowatt hour for pollution, but it would take 5 cents per kilowatt hour to finance a new plant, the power companies will keep the old plants alive, until it is no longer viable to do so.

The other constraint is trying to build new plants. Here in the US, it is extremely difficult (and costly) to build new plants, but keeping old garbage alive is cheap.

People are usually sanguine about new power plants, as long as they're "Not In My Back Yard". Unfortunately, everywhere is someone's back yard, and therefore, it becomes nearly impossible to build new power plants. Refineries are the same way. In the US, we're running refineries that are 40 years old, (despite the fact that the technology has improved over the last 40 years), but it's almost impossible to build a new one.

Even the green technologies (wind, solar, etc.) are suffering from the same issue - trying to build something new is nearly impossible, if anyone is around to see, hear or smell it, (or in the case of wind, if there's a bird around to fly into it). So we're stuck with the same old way things have been done, because we can't wipe the slate and build it right.

If you want a new, clean(er) power plant, just try to get it put in your neighborhood....


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PostPosted: Dec 17th, '08, 04:46 
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Dufflight wrote:
The power industry. I've gotten some large power bills over the years. Asked the power guy that was fixing a meter in the power box why the earth wire was wired into the neutral terminal. Power is like water the current comes into your house and then flows back out and back into the grid. But most peoples power does not go that way and flows into your house and then through the earth wire to the ground. How much does that cost people and resources if we are paying for power that goes into the ground. Power guy didn't know. Any one understand how that works.

Still think on the emissions front that until we all walk around in smog wearing masks everyday of our lives that even then there will be little change. Because there are parts of the world that already do this and nothing changes.



I can explain it if you really really want to know
Im proud to be an Australian but embarrassed at our policies
So means testing the solar rebate and the 5% that was released yesterday, seems like all of a sudden the environment has taken a back seat
Im so angry

Bree


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PostPosted: Dec 17th, '08, 06:09 
Bordering on Legend
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One good reason that power companies haven't invested in clean coal - there isn't enough Kool-ade to wash it down with.

Duff,
You're only metered on net power delivered, not any leakage currents (which, one would hope, would be minimal). The neutral connection is basically a way to derive a local earth without running the extra wire in to do so. A true one-wire, earth system would be so profligate with noise and floating voltages it would never be done. Having said that, I believe that there is an undersea power cable to Tasmania using such a system, but fish don't live near where the cable lands.


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PostPosted: Dec 17th, '08, 07:51 
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Does anyone really think clean coal is achievable, there will always be a by product

Bree


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PostPosted: Dec 17th, '08, 11:40 
Seriously, this cant be healthy.
Seriously, this cant be healthy.
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Not much is efficent with being able to use the byproduct :wink:


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PostPosted: Dec 22nd, '08, 10:09 
Not everyone is unhappy with the announcement of a 5% target.... :wink:

Let the government know how you feel ... https://www.getup.org.au/campaign/Clima ... Now&id=488


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PostPosted: Dec 22nd, '08, 20:12 
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heard a guy on the radio the other day saying that china is one of the worlds biggest purhcaser of solar and wind power gear, so even they the worlds bigget emiiters are trying to do something

Cheers
pete


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PostPosted: Dec 24th, '08, 12:18 
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Uncle Yarra wrote:
One good reason that power companies haven't invested in clean coal - there isn't enough Kool-ade to wash it down with.

Duff,
You're only metered on net power delivered, not any leakage currents (which, one would hope, would be minimal). The neutral connection is basically a way to derive a local earth without running the extra wire in to do so. A true one-wire, earth system would be so profligate with noise and floating voltages it would never be done. Having said that, I believe that there is an undersea power cable to Tasmania using such a system, but fish don't live near where the cable lands.


Still works out the same in the end. Power goes through the meter then back to the neutral and then to earth. Still have to pay for all the power that goes through the meter. Must be a better way of delivering power.


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