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Costs given as way too high

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As for avoided CO2 costs, most of the literature that I come up with, eg http://www.gasification.org/Docs/2002_Papers/GTC02030.pdf (slide 25), http://www.climatevision.gov/pdfs/coal_roundtable/dalton.pdf (slide 23) http://www.netl.doe.gov/publications/proceedings/01/carbon_seq_wksp/David-Herzog.pdf (page 3, last line of table), IPCC special (report http://www.ipcc.ch/activity/srccs/SRCCS_Chapter8.pdf) page 38; the MIT coal study, talks of avoided costs in the $18-27 range for CO2 (will be 3.66 times higher for C). These are all without EOR, depending on local situations. also, these are mostly costs avoided, not captured, though a couple of resources do not mention the difference. The IGCC report says upto $14-$53 but that is the outer limit.

I don’t know who wrote this or when but if nobody replies to me I guess it will be archived eventually. Is this still relevent? Chidgk1 (talk) 06:29, 5 October 2024 (UTC)[reply]

Combined Cycle Combustion Engine

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This article is supposed to be information about Combined Cycle Systems, however it focuses almost exclusively on Gas Turbine units. Many small modular systems distributed outside the USA/EU use Combined Cycle Combustion Engines CCCE usually with a large Diesel internal combustion engine as the primary cycle and a steam plant running off of the exhaust heat as the secondary cycle. These systems are also very energy efficient rating just a few percentage points below CCGT (54%) with CCCE rating 51%. CCCE have advantages and disadvantages compared to CCGT the primary advantage being they can run on a much broader spectrum of fuel inputs without excessive wear or higher maintenance cycle rates being required.

See http://www.wartsila.com/media/news/29-09-2006-wartsila-bio-engines-drive-italian-green-power for a biofuel modular plant in Italy.

See http://powerplants.man.eu/solutions/combined-cycle for MAN diesel combined cycle power plant examples in multiple countries.

See http://www.wartsila.com/energy/references/europe/aliaga-turkey For a Wartsila Diesel Combined Cycle power plant burning Natural Gas fuel.

Tanada (talk) 12:13, 8 May 2016 (UTC) Tanada May 08, 2016[reply]

It would be good to get some sources that are independent of the manufacturers. Kendall-K1 (talk) 12:23, 8 May 2016 (UTC)[reply]

Mitsubishi-Hitachi efficiency

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Don't know enough about this to say if it is true, but Mitsubishi is claiming >63% LHV for the M501JAC certain others of their J-series turbines.. should this trigger an article update? 98.117.67.55 (talk) 04:32, 16 January 2017 (UTC)[reply]

see http://www.mpshq.com/j-series.html

I stuck this in. We might want to remove some of the older efficiency claims, as this section is getting crowded. Kendall-K1 (talk) 05:11, 16 January 2017 (UTC)[reply]
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math error

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The error is in the introduction that states as quoted below that the efficiency increases fifty percent. The actual increase, again as quoted, is 100% (meaning doubled). A fifty percent increase from 34% would be 34+17=51%. Either the fifty should become 100 or the 62.22 should be reduced.

Secondly, the precision "62.22%" seems quite overly detailed and mathematically in error, and should be reduced to only sixty-two percent.

By combining these multiple streams of work upon a single mechanical shaft turning an electric generator, the overall net efficiency of the system may be increased by 50–60%. That is, from an overall efficiency of say 34% (in a single cycle) to possibly an overall efficiency of 62.22% (in a mechanical combination of two cycles) in net Carnot thermodynamic efficiency. — Preceding unsigned comment added by 23.249.100.250 (talk) 19:21, 21 September 2018 (UTC)[reply]

That sentence in the article needs to be rewritten. I don't know anything about the subject so I can't really help. It now says "[...] to possibly an overall efficiency of 62% (combined cycle), 84% Theoretical efficiency (Carnot cycle)" and ends like that. I'm not even sure what it's supposed to mean. Aeluwas (talk) 15:33, 15 June 2019 (UTC)[reply]
Somebody fixed it I guess as I cannot find this - if not suggest you tag “clarify” Chidgk1 (talk) 07:18, 5 October 2024 (UTC)[reply]

Comparison to Carnot efficiency

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The article includes a comparison to the Carnot cycle efficiency: "This is more than 84% of the theoretical efficiency of a Carnot cycle." This statement requires context of the hot/cold reservoir temperature that is assumed to calculate the Carnot cycle efficiency otherwise it is meaningless. Ideally whichever specific power plant achieves this efficiency should be linked. 212.114.178.106 (talk) 15:50, 29 December 2023 (UTC)[reply]

Feel free to improve the article but be sure to cite reliable sources Chidgk1 (talk) 06:32, 5 October 2024 (UTC)[reply]
The following discussion is closed. Please do not modify it. Subsequent comments should be made in a new section. A summary of the conclusions reached follows.
The result of this discussion was to merge. Chidgk1 (talk) 18:41, 2 October 2024 (UTC)[reply]

Ref 3 is not working for me but as far as I can tell it is not worth a separate article Chidgk1 (talk) 17:37, 27 February 2024 (UTC)[reply]

@Jusdafax@Clayoquot Thanks for commenting on another hydrogen merger proposal - if you have an opinion on this one please comment Chidgk1 (talk) 07:26, 25 March 2024 (UTC)[reply]
The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.