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Post by huon on Dec 21, 2019 14:40:54 GMT 9.5
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Post by David B. Benson on Jan 4, 2020 11:24:12 GMT 9.5
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Post by David B. Benson on Jan 4, 2020 12:35:26 GMT 9.5
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Post by David B. Benson on Jan 7, 2020 10:54:29 GMT 9.5
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Post by David B. Benson on Jan 7, 2020 11:54:24 GMT 9.5
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Post by David B. Benson on Jan 9, 2020 13:22:54 GMT 9.5
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Post by David B. Benson on Jan 10, 2020 7:24:31 GMT 9.5
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Post by David B. Benson on Jan 11, 2020 12:19:02 GMT 9.5
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Post by David B. Benson on Jan 16, 2020 15:12:00 GMT 9.5
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Post by huon on Jan 18, 2020 16:23:19 GMT 9.5
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Post by David B. Benson on Jan 19, 2020 13:00:56 GMT 9.5
... All the revenue from the tax could be returned to the public ... Except that some source of funding is required to remove the excess carbon dioxide from the atmosphere.
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Post by David B. Benson on Jan 23, 2020 9:43:38 GMT 9.5
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Post by David B. Benson on Jan 27, 2020 13:06:40 GMT 9.5
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Post by David B. Benson on Feb 10, 2020 14:36:26 GMT 9.5
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Post by David B. Benson on Feb 22, 2020 15:37:58 GMT 9.5
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Post by David B. Benson on Feb 25, 2020 12:55:30 GMT 9.5
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Post by David B. Benson on Feb 26, 2020 15:01:26 GMT 9.5
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Post by David B. Benson on Feb 26, 2020 16:40:37 GMT 9.5
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Post by David B. Benson on Feb 27, 2020 20:20:40 GMT 9.5
I had hoped that the thread title would provoke discussion. So far that is a failure.
Transportation and space heating seem the more serious issues. Transportation because the energy density needs to be high. Space heating, also cooling, because of the massive energy required.
Oh, more serious than the usual topic of powering the grid, where solutions are coming forth.
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Post by engineerpoet on Feb 28, 2020 2:04:31 GMT 9.5
I had hoped that the thread title would provoke discussion. So far that is a failure. I've been slightly busy and forgot to throw this over here: world-nuclear-news.org/Articles/Project-launched-to-develop-Finnish-SMR-for-distriAs I calculated over at Atomic Insights, it would take about 35 NuScales to completely power Helsinki. This isn't a solution which can power the world because we don't have enough fissiles to do the job with LWRs, but it shows what is possible if we use breeders. If the Finns set an example, I would not be surprised if the resistance to the inevitable finally collapses in the likes of Germany, Austria and Italy.
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Post by David B. Benson on Feb 28, 2020 14:09:59 GMT 9.5
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Post by David B. Benson on Mar 1, 2020 20:49:30 GMT 9.5
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Post by David B. Benson on Mar 1, 2020 22:06:58 GMT 9.5
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Post by Roger Clifton on Mar 3, 2020 11:34:15 GMT 9.5
I had hoped that the thread title would provoke discussion... Transportation and space heating seem the more serious issues. Space heating: Buildings within a reasonable radius of a steam-driven generator (aka "thermal power station") are often supplied with heated water cycled from the condenser. Heat pumps (as the reverse cycle of refrigeration) warm their working vapour with the passing water, then pump the heat into the building by compressing the vapour. As the reticulated warm water cools down with distance, the more remote buildings' heat pumps have to work harder. But the water only needs to be warmer than the outside air to serve the purpose. As far as I know, the "coefficient of performance" of the heat pumps is only about four (i.e. four units of heat pumped in for one unit of electricity), so heat pumping would seem to be a technology due for R&D. District heating seems to be a good reason to install single SMRs scattered throughout a cold city, rather than a big one on its outskirts. Similarly small regional cities of say, 50,000 people would have that extra justification to install their own SMR, for heat-and-power. (Synthetic fuel for transport is discussed on a neighbouring thread)
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Post by David B. Benson on Mar 4, 2020 20:38:48 GMT 9.5
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Post by David B. Benson on Mar 5, 2020 16:42:38 GMT 9.5
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Post by engineerpoet on Mar 6, 2020 5:01:17 GMT 9.5
The new ecosystem: Where will winners come from in energy future Dr. Tim Lieuwen Money quote from the article: Been saying this for some time, and I hope that it gets repeated more.
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Post by David B. Benson on Mar 8, 2020 14:35:26 GMT 9.5
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Post by engineerpoet on Mar 8, 2020 22:33:44 GMT 9.5
In a range making it likely that it will soon be possible. In a range which requires a revolution in technologies to make it possible, you mean. FTA: This isn't far off my own estimate of $7/kWh. As the article states later: If you have 180 hours of storage cycled 1/year at $20/kWh, with a lifespan of 10 years, this energy costs $2/kWh for amortization plus interest costs. This is a long, long way from "cheap". ... In other words, we've had the lithium-ion revolution in electricity storage... but that's not enough. We need another one in order to hit the cost figures required to run the US grid on 100% "renewables" (meaning mostly unreliables). And this is just "power". This is not transportation energy, it's not space heat, it's not industrial process heat. It requires a complete technological revolution and it STILL leaves 60% of the job un-done. These people have to know they're lying. No way these glaring omissions can have gone outside their awareness.
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Post by David B. Benson on Mar 8, 2020 23:01:12 GMT 9.5
engineerpoet --- As pointed out in bravenewclimate.proboards.com/thread/386/utility-scale-batteries?page=4Vanadium flow batteries offer the prospect of soon providing $100/kWh storage. So in units with indefinite life, although the pumps will require replacing when the bearings wear out, 30 years. There are other flow battery technologies in case the sources of vanadium become expensive. And is often mentioned, worn down Li-ion batteries no longer suitable for transportation use have a secondary life as utility batteries. You can check Oliver Schmidt's storage lab site via bravenewclimate.proboards.com/thread/705/lcoe-lace
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