Chinese Marine Propulsion

ACuriousPLAFan said:

Seems like the CCG will be the first to use CODAG propulsion system on their cutters instead of the PLAN on their warships?

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More to the related subject. The 2nd picture is from another academic paper from 大工院.

Summing up @勤劳朴实罗素历's article on the subject - If the two papers are referring to the same thing, we could actually be looking at a brand new marine gas turbine engine with an output of 18-20MW, a thermal efficiency of nearly 40%, and with an architecture that is quite close to the LM2500.

However, the probability of the academic papers using LM2500's stats straight away shouldn't be discarded either.

Just a look back from a 2017 academic paper with a simplified view of the QC400 intercooled marine gas turbine engine and its performance under ISO conditions. Posted by @勤劳朴实罗素历 on Weibo.

Isn't 42% efficiency higher than the LM2500?

broadsword said:

Isn't 42% efficiency higher than the LM2500?

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Those parameters (including the 42% thermal efficiency) is from 2017. I believe (at least some of) the parameters got changed through the development process, since per @勤劳朴实罗素历's recent indications, the QC400 now has electrical power generation output of around 50MW.

Cross-posted from the Chinese Aircraft Engine thread.



New gas turbine engine (QC500) in the works confirmed, though unsure of whether said engine will have a ship-based variant in the future like the QC400.

As for the WS35 - Please refer the Chinese Aircraft Engine thread.

What should be QC500's power? 50MW?

broadsword said:

What should be QC500's power? 50MW?

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Yes.

And my previous mention of the QC400 needs to be corrected:

ACuriousPLAFan said:

... since per @勤劳朴实罗素历's recent indications, the QC400 now has electrical power generation output of around 50MW.

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He also clarified that the QC400 is actually 40MW-class, not 50MW-class.

largest ever LNG dual fuel VLCC by Dalian Shipyard also using largest ever LNG fuel tank. enough for 19000nm range.

China has basically a full LNG dual fuel supply chain now