Chinese Marine Propulsion

[tphuang]

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CGT-50
View attachment 168322

nice, I hadn't even paid attention to that. I was wondering how it kept saying 3-50MW & that didn't make sense if CGT40 is the largest in the family. Looks like there is also H-25 (32 and 42mw version). But a 50MW marine version would be quite something.

 

[ACuriousPLAFan]

nice, I hadn't even paid attention to that. I was wondering how it kept saying 3-50MW & that didn't make sense if CGT40 is the largest in the family. Looks like there is also H-25 (32 and 42mw version). But a 50MW marine version would be quite something.

In addition, some time ago SOYO also noted a 60MW-class CGT-XX is in the works, though it's still quite a while away before we can see it in operation.

 

[ACuriousPLAFan]

Excerpt from an academic paper depicting the 50MW-class CGT50 engine, which was described as "massive". Posted by SOYO on Weibo.

 

[ACuriousPLAFan]

Excerpt from an academic paper depicting the 50MW-class CGT50 engine, which was described as "massive". Posted by SOYO on Weibo.

View attachment 168488

Slightly more from the same academic paper. Dimension listed as 10.5 meters long x 3 meters wide x 3 meters tall, and the gas turbine engine (CGT-50) is clearly listed as ship-use. Posted by SOYO on Weibo.

For comparison, the aeroderivative 40MW-class MT30 is 8.7 meters long x 2.7 meters wide x 3.5 meters tall.

 

[tphuang]

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interesting stuff from 爱若丰狂SOYO历

“最新型号” 依然是个很模糊的表述

保守估计，包头舰换装的应该是19年前后开始逐步落地的GT25000进一步改进型

但 “更新换代” 这四个字，GT25000是配不上的

CGT30大约在2022年开始推出工业型号

大约在2024年启动对俄出口，出口对象之前曾引进过CGT-25D

按照703公开的研制路线，再结合工业型号的推出时间，估计30最早的型号——船用型差不多是在22-23年完成研制工作

而且703-广瀚着重强调过30可以和25原位替换

所以，包头舰确实可能换装了第一批次的30，倘若如此，最新建造的这批52D应该都会换上30

即使是限制功率运行的30，也远比25要强大，这一点明天会找时间讲讲

今天没时间讲了，因为我要去看辉夜姬了（

包头舰 is No. 133 and entered service at end of 2021. It says that it got gas turbine change in 2024 if we assume the term 前年 is correct here.

So the question is just what turbine 052D are getting changed to.

He is speculating CGT-30 is more likely as the marine version work was likely completed by 2022-2023. CGT-30 had started exporting to Russia by 2024.

 

[ACuriousPLAFan]

In conjunction with SOYO's latest posting on the CGT-30M in the 052C/D thread, here's an (over)simplified comparison table between the gas turbine engines of the CGT and LM families in the 20MW and 30MW categories:

	CGT-25M​	CGT-30M​	LM2500​	LM2500+​	LM2500+G4​
Max Power Output (ISO)	28.7 MW​	32-33.5 MW​	25.06 MW​	30.2 MW​	36.98 MW​
Max Power Output (USN NSD)	20 MW​	27.5 MW​	22.07 MW​	26.63 MW​	30.46 MW​
Thermal Efficiency	36 %​	39.3 %​	37 %​	39 %​	39.3 %​

TL; DR - The CGT-30M is comparable to the LM2500+. As for the LM2500+G4 - There's the CGT-40M.

(Edit: Correction of mistakes.)

 

[Aspide]

包头舰 is No. 133 and entered service at end of 2021. It says that it got gas turbine change in 2024 if we assume the term 前年 is correct here.

So the question is just what turbine 052D are getting changed to.

He is speculating CGT-30 is more likely as the marine version work was likely completed by 2022-2023. CGT-30 had started exporting to Russia by 2024.

I understand that Russia has been importing industrial, not marine, version of CGT-25 and CGT-30?

 

[ACuriousPLAFan]

I understand that Russia has been importing industrial, not marine, version of CGT-25 and CGT-30?

Yes. Apparently they initially ordered CGT-25D before switching over to CGT-30D.

 

[tphuang]

In conjunction with SOYO's latest posting on the CGT-30M in the 052C/D thread, here's an (over)simplified comparison table between the gas turbine engines of the CGT and LM families in the 20MW and 30MW categories:

	CGT-25M​	CGT-30M​	LM2500​	LM2500+​	LM2500+G4​
Max Power Output (ISO)	28.7 MW​	32-33.5 MW​	25.06 MW​	30.2 MW​	36.98 MW​
Max Power Output (USN NSD)	20 MW​	27.5 MW​	22.07 MW​	26.63 MW​	30.46 MW​
Thermal Efficiency	36 %​	39.3 %​	37 %​	39 %​	39.3 %​

TL; DR - The CGT-30M is comparable to the LM2500+. As for the LM2500+G4 - There's the CGT-40M.

(Edit: Correction of mistakes.)

yes, it's very interesting. I do find it still a little strange to replace Baotou's propulsion so soon after commissioning, but having newer 052DLs using CGT-30M makes a lot of sense.

 

[Tomboy]

CGT-30 costs approximately 39.2 million yuan per package for the generator configuration. That's ~5.6 million USD, comparing that to a comparable LM2500+G4 set which is estimated to costs 11-12 million in 2010 USD or more than 16 million adjusted for inflation.