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MIT Proposes Partial CCS - Capture Less CO2 At Lower Cost



Let’s get one thing straight off the bat: carbon capture and just try! cheapest generic levitra storage (CCS) technology has a ways to go before it convinces anyone that it is a real long term solution. Personally, I think there’s a greater chance of seeing the hydrogen economy develop before we see CCS achieve any real success, and we all know that the hydrogen economy is always ten years away…

Nonetheless, there is the best site discount cialis reality to contend with. The reality is that there is an ever-increasing demand for more power that is available all the time. For now, at least, we can’t meet all of that demand without resorting, at least a little bit, to things like coal. That being said, let’s take a look at a proposal being made by the MIT Energy Initiative regarding what they call “partial capture” CCS.

The basic idea is that states are starting to regulate CO2 levels. No one knows what to do. No one wants to levitra buying invest in the CCS solutions that are on the table, since they increase capital costs by 30-60% and they make the power plant less efficient, so the price of electricity per kwh goes up. But, says the MIT team, that all depends on how much carbon you actually capture.

Full carbon capture has been defined as capturing 90% or more of buy cialis soft online the CO2. The working assumption has been that CCS follows economies of scale. For example, when you build a plant that can manufacture a lot of something, the cost per thing goes down. Similarly, the expectation is that if a CCS plant captures a lot of carbon, the cost-per-ton-captured will go down.

What the MIT folks did was build a model to see how the generic viagra china cost changes as more CO2 is captured by the device, taking into account the technological reality. One key aspect of that technological reality is that at a certain point between 0% and 90% CO2 captured you need to add another CCS device. Thus, the study found that it is optimal to design a "partial capture" system. Instead of capturing 90% of the CO2, only capture 60%. This will still reduce emissions to acceptable state levels (comparable to those of a natural gas plant), and is cheap enough for the power providers to actually consider.

Does this mean we should try to levitra cialis wean ourselves off of coal? Absolutely not! But this is still a good thing. It gives coal power plants a chance to at least move in a green direction. It may even give CCS a chance to prove itself. More than anything, it gives credence to the notion that the green revolution can be achieved through a process of discount viagra canada discrete, realistic steps.

Via MIT

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Comments (5)Add Comment
0
what is cialis angioplasty this article trying to say?
written by SolarDaveC, November 20, 2008
I'm confused about what this article is reporting... that if we try less and only do viagra viagra 60% CCS instead of 90%, it's going to be cheaper? Not to say that I'm smarter than the collective minds of MIT, but I thought this was pretty obvious.

Also:

> Does this mean we should try to wean
> ourselves off of coal? Absolutely not!

Wait, why aren't we trying to wean ourselves off of coal?
0
Price coal with CCS technology assumptio
written by Biotecchie, November 29, 2008
Certainly fossil fuels will continue to viagra 10 mg be used, but until there is a level playing field with respect to price, green energy technologies will not be able to compete - nor will clean coal technologies compete with old fashioned dirty coal.

What is needed is a clear policy that charges coal-burning power plants for the CO2 they emit. That cost should be equivalent to a significant fraction of what it would cost to capture and sequester the CO2. These charges (i.e. taxes) should then be used to underwrite the capital costs of green technologies.

What is implicit but not stated in this article is that it is necessary to burn 1/3 more coal to www.jubileecampaign.nl generate the http://www.breinweb.nl/buying-viagra-in-the-us energy required to capture CO2 from coal-fired power plants. The carbon capture technology likewise adds to the capital cost. If these costs are taken into account, wind and photovoltaic energy are far more competitive.

Also: SolarDaveC is not alone in being confused. I think the author meant to sat is "Does this mean we should NOT try to wean ourselves off of coal?" and was undone by an overzealous editor.
0
Slippage
written by Frank Campi, November 29, 2008
If one looks at Carbon Capture Systems, the 80/20 rule typically applies. That is, it is as expensive to capture the last 20% as the first 80%. This study suggests that a really inexpensive system with minimum impact on the plant economics or capacity would can capture only 60% of the emissions. Make sense to me.
0
...
written by Jeff Green, November 30, 2008
Coal is one of the main culprits of GW. In my mind 60% is just not good enough. The plants last 50 to 60 years and the utilities will dry until they get their way about keeping them. Its a problem I want to get rid of very good site viagra dose and scrapped forever.
0
if carbon is the killer then eliminate i
written by RonSmith, December 03, 2008
I does not matter the efficiencies if the GW kills us. We must eliminate emitting carbon into the atmosphere. Only 90 plus % will save us from us.
I believe that the money people will, if prodded properly, find the viagra prescription medication ultimate solution.
When the survival of the planet can be expressed in terms of money, then we will survive.

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