Realstone
Lord of Fire
No. Like Semipro stated above, it is all about balance.I feel it is safer than gasoline and if spilled doesn't cause massive pollution problems however it is as flammable as gas. There is no perfect solution.
Ray
No. Like Semipro stated above, it is all about balance.I feel it is safer than gasoline and if spilled doesn't cause massive pollution problems however it is as flammable as gas. There is no perfect solution.
Ray
I would hope that contingent is shrinking.Realstone said: ↑
Gary, there is a growing contingent that believes that CO2 is not a pollutant, but essential to life.
Gary
A fivefold increase in the amount of CO2 in the atmosphere would not be toxic to anything, yet would be very beneficial to plant life and would benefit us. Source: The Engineering ToolboxAlthough oxygen is essential for most life its highly dangerous as a toxin or oxidant at higher concentrations.
Like many things, its all about balance.
A fivefold increase in the amount of CO2 in the atmosphere would not be toxic to anything, yet would be very beneficial to plant life and would benefit us. Source: The Engineering Toolbox
A fivefold increase in a greenhouse might be a good idea....on a planetwide scale, um, thanks but no.
A fivefold increase in a greenhouse might be a good idea....on a planetwide scale, um, thanks but no.
I feel the same way about gambling untold billions and even trillions of dollars on something we don't even have a grasp on.I don't get it either.
Why are so many willing to roll the dice on something that we may not be able to correct if we get it wrong?
Don't get me wrong, I love gambling/playing poker however when I take a seat & lay my money down I am well aware of the odds in virtually every situation. After all there are only 52 cards in the deck to begin each hand with. Pretty simple.
Not so with a vastly more complex system like the environment. Also I never place more money on the table than I can afford to lose. When we gamble with our environment can we afford to lose?
What the heck are our options to breathing air & drinking water? Seems like an all in blind bet to me. That's bad poker folks. Time to recalculate the odds. The stakes may be a lot higher than many of us imagine.
I feel the same way about gambling untold billions and even trillions of dollars on something we don't even have a grasp on.
I feel the same way about gambling untold billions and even trillions of dollars on something we don't even have a grasp on.
I feel the same way about gambling untold billions and even trillions of dollars on something we don't even have a grasp on.
PS see story about how Germany produced 50% of the entire country electricty from solar and wind in May 2012
This with no "battery backup:!
http://www.reuters.com/article/2012/05/26/us-climate-germany-solar-idUSBRE84P0FI20120526
No more PTC in 2013=no new wind turbines in US.
Solar is the new wind.
There is no free lunch Tom. Even if the government pays you money to stick a solar panel on your roof, you still pay for it.I too like looking at the spinning windmills as I see FUTURE technology besting old combustion technology.
In the end, Math wins:
Fossil Fuels are finite therefore will increase in price , yes even nat gas over time. Supply demand will always apply.
Renewables prices are falling like a leaf, Solar is really falling and wind is now cheaper than Nat gas or Coal to make new plants.
In fact more renewable energy was put up in the last 2 years than dirty Fossil Fuels, just like Flat screen TV took over Cathode Ray tube TV, noone noticed when the
new technololgy crossed over, as one always assumed the "incumbent" ( cathode ray tubes, typwriters, mainframe computers, desktop computers, blackberries) would always dominate.
When the crossover comes and renewables are much cheaper than FF (with or without subsidies) guess what consumers are going to pick?
Right now Sungevity and Solarcity in California offer NO money down solar rooftop leases.
Suppose your bill is $200 a month for "grid" electricity.
You pay $100 a month lease, $50 to electric company , you pocket $50 a month
Also in addition to saving us money, and creating jobs, renewables will decrease CO2 production which will help slow down melting the ice caps.
Win, win win!
PS see story about how Germany produced 50% of the entire country electricty from solar and wind in May 2012
This with no "battery backup:!
http://www.reuters.com/article/2012/05/26/us-climate-germany-solar-idUSBRE84P0FI20120526
Tom
When Germany’s power grid operator announced the exact amount of next year’s green energy levy on Monday, it came as a shock to the country. The cost burden for consumers and industry have reached a “barely tolerable level that threatens the de-industrialization of Germany”, outraged business organisations said. Since then politicians, business representatives and green energy supporters have been arguing about who is to blame for the “electricity price hammer”. After all, did not Chancellor Angela Merkel (CDU) promise that green energy subsidies would not be more than 3.6 cents per kilowatt hour? Now, however, German citizens have to support renewable energy by more than EUR 20 billion – instead of 14 billion Euros. How could Merkel be so wrong? --Daniel Wentzel, Die Welt, 20 October 2012
As a resident of Ontario, Canada, I think we would be better off farming out our solar to Arizona and our wind farms to Newfoundland. If you're going to do it, do it right. Most of what we see are virtual political photo ops.Indeed. Solar is still a little dear in locations with a poor resource (i.e. cloudy). Most of the lower 48 has a better solar resource than Germany, the Southwest almost 2x as good.
There is no free lunch Tom. Even if the government pays you money to stick a solar panel on your roof, you still pay for it.
That is one way to do it and we may need that , indeed Proposal today to run a DC line from our friendly northern neighbor in New Brunswick and Quebec through Maine toAs a resident of Ontario, Canada, I think we would be better off farming out our solar to Arizona and our wind farms to Newfoundland. If you're going to do it, do it right. Most of what we see are virtual political photo ops.
Love the message, but you misread the article....it was 50% when the sun was shining, prob more like 5% of electricity on
a yearly average basis, which is still DAMNED impressive for the new kid on the block.
On another note, here is proof of my concern about going 'all in' on green initiatives:
They do it in Europe. High voltage DC current can actually be cheaper to build with lower losses if you're going point-to-point (large dam in the middle of nowhere directly to an urban location). There are trade-offs, but depending on how far you go and what your grid looks like it can be a better choice.MacMaine it's impractical to send DC great distances because it can't be transformed like AC this is why the transmission lines are AC. Edison thought DC was the way to go and why he failed and Tesla proved him wrong. The idea is you crank up the voltageto the transmission lines and this reduces the current so you can run small diameter wire. When this high voltage gets to a substation it is transformed to a various voltages and sent to the street to be used by home and industry.
Ray
That's news to me! The problem with generating DC is you use a commutator which is a high maintenance wear item whereas with AC you use slip rings this is in turn rectified with a full-wave bridge rectifier which is a low wear low maintenance item. This is why your car has an alternator as the old cars used a generator which were unreliable and required much more repair..They do it in Europe. High voltage DC current can actually be cheaper to build with lower losses if you're going point-to-point (large dam in the middle of nowhere directly to an urban location). There are trade-offs, but depending on how far you go and what your grid looks like it can be a better choice.
I am an industrial electrician and despise DC motors as they are trouble prone and require regular maintenance. They also tend to be dirty due to the build up of carbon dust which also is a health hazard. AC motors by contrast require no maintenance and last much longer with bearings being the limiting factor provided the overloads are properly sized and work as advertized.. Modern AC drives work as well as DC drives and actually cheaper than DC drives in most cases. Add to this reduced wire size to the motors for 3 phase motors VS DC motors plus servos are more common and also very precise and reliable.There are some HV DC lines in the US, only on very large operations though and when its sent a good distance, yea it was news to me when I heard it, AC is much better for most applications.
It's true that DC has a higher maintenance and lower reliability(per se) than AC, but we're talking BIG BIG BIG current.That's news to me! The problem with generating DC is you use a commutator which is a high maintenance wear item whereas with AC you use slip rings this is in turn rectified with a full-wave bridge rectifier which is a low wear low maintenance item. This is why your car has an alternator as the old cars used a generator which were unreliable and required much more repair..
Ray
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