Chinese Marine Propulsion
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by78
General
An update: the AGT-25 at the demonstration plant has recently surpassed 20,000 hours of safe and stable operation and generated 320,000 MWh of electricity.
Cross-posted from the 00X/004 future nuclear CATOBAR carrier thread.
Potential configuration of nuclear propulsion system from an academic paper, with probable user platforms being CVNs and/or 095 SSNs/096 SSBNs.
Potential configuration of nuclear propulsion system from an academic paper, with probable user platforms being CVNs and/or 095 SSNs/096 SSBNs.
@爱若丰狂SOYO历 attended the 2025 Turbine Expo at Ningbo earlier today. Apparently, the expo prohibits any sorts of photo and video media inside the venue to be shared outside.
Here are some of the key points from the expo presentation which are relevant to this thread:
4. CSSC 703rd Institute’s independently developed gas turbine system primarily targets “marine and industrial gas turbines.” During the presentation, the speaker made a clear distinction between “marine and industrial gas turbines” (船舶及工业燃机) and “heavy-duty industrial gas turbines” (重型工业燃机), implying a clear message where the CGT series currently lacks dedicated industrial gas turbines, let alone heavy-duty ones.
5. At least so far, the development path of the CGT series has been one of synergy between ship-based and industrial-based applications. The two fields mutually benefit from each other by incorporating advanced experience and design improvements gained through testing and real-world use, indicating that marine and industrial engines share the same lineage and core technology.
6. The overhaul life of the GT25000 engine is now roughly equivalent to that of the LM2500, with both engines reaching around the 30000-hour level.
7. The CGT30 has nearly caught up with the performance of the LM2500+G4, at least under ISO* conditions (almost 37MW), where it is extremely close in performance metrics.
8. It seems the design phase for the 50 MW-class gas turbine may have already concluded (though this part wasn’t clearly heard), but the appearance of the first prototype still needs some waiting. This could indirectly indicate that CSSC now possesses the capability to independently design and manufacture various advanced hot-section components, including an entirely new generation of engine core.
9. Currently, is the 703th Institute shifting focus towards developing advanced small-to-medium power gas turbines? This was mentioned during the presentation. However, this has long been a strong area for the aviation engine sector - AVIC - Which already has advanced turboshaft and turboprop engines such as the AES100, AEP400/500, covering the 1–6 MW range. In the 7–16 MW range, there are already relatively mature models like the QC70, AGT10, and QC185. Although AVIC’s pace in promoting aero-derivative gas turbines and their market application has not been particularly fast, now the CSSC is attempting to enter what has traditionally been AVIC’s domain. I remain skeptical about this shift.
(*ISO conditions = 15°C temperature, sea level atmospheric pressure, 0% relative humidity, no inlet/exhaust loses.)
Here are some of the key points from the expo presentation which are relevant to this thread:
4. CSSC 703rd Institute’s independently developed gas turbine system primarily targets “marine and industrial gas turbines.” During the presentation, the speaker made a clear distinction between “marine and industrial gas turbines” (船舶及工业燃机) and “heavy-duty industrial gas turbines” (重型工业燃机), implying a clear message where the CGT series currently lacks dedicated industrial gas turbines, let alone heavy-duty ones.
5. At least so far, the development path of the CGT series has been one of synergy between ship-based and industrial-based applications. The two fields mutually benefit from each other by incorporating advanced experience and design improvements gained through testing and real-world use, indicating that marine and industrial engines share the same lineage and core technology.
6. The overhaul life of the GT25000 engine is now roughly equivalent to that of the LM2500, with both engines reaching around the 30000-hour level.
7. The CGT30 has nearly caught up with the performance of the LM2500+G4, at least under ISO* conditions (almost 37MW), where it is extremely close in performance metrics.
8. It seems the design phase for the 50 MW-class gas turbine may have already concluded (though this part wasn’t clearly heard), but the appearance of the first prototype still needs some waiting. This could indirectly indicate that CSSC now possesses the capability to independently design and manufacture various advanced hot-section components, including an entirely new generation of engine core.
9. Currently, is the 703th Institute shifting focus towards developing advanced small-to-medium power gas turbines? This was mentioned during the presentation. However, this has long been a strong area for the aviation engine sector - AVIC - Which already has advanced turboshaft and turboprop engines such as the AES100, AEP400/500, covering the 1–6 MW range. In the 7–16 MW range, there are already relatively mature models like the QC70, AGT10, and QC185. Although AVIC’s pace in promoting aero-derivative gas turbines and their market application has not been particularly fast, now the CSSC is attempting to enter what has traditionally been AVIC’s domain. I remain skeptical about this shift.
(*ISO conditions = 15°C temperature, sea level atmospheric pressure, 0% relative humidity, no inlet/exhaust loses.)
In addition, there are several photos of the expo which were posted by @爱若丰狂SOYO历 on Weibo. I only managed to take a good look at one of them before he removed those photos due to the aforementioned photo/video restriction.
During the CSSC 703rd Institute's presentation segment, there is one presentation screen with the following short paragraph:
Translated:
Besides the short paragraph, there is a lineup of gas turbine engine products by CSSC's 703rd Institute listed on the presentation screen. From smallest to largest:
- CGT3
- CGT6
- CGT8
- CGT12
- CGT16
- CGT25
- CGT28
- CGT30
- CGT40
- CGT50
With a partially photographed chart of the names of the gas turbines and their respective power outputs. The digits in the names corresponds to their listed power outputs.
Based on the information on the CGT30 in my previous post, is it assumed/expected that the listed power outputs for each of the engines are based on ISO standards (15°C temperature, sea level atmospheric pressure, 0% relative humidity, no inlet/exhaust loses).
Moreover, the only thing I could recall regarding two other slides is that China is already utilizing 3D printing technology in the manufacturing of turbine blades. (Though this most probably isn't news anymore by this point).
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by78
General
The first batch of two AGT-7B turbine generators . They were installed on a CNOOC offshore oil platform.
The AGT-7 gas turbine is a 7MW-class gas turbine derived from WS-10 Taihang. Suitable for marine propulsion. Civilian applications include power generation for offshore oil and gas platforms, backup power generation, etc.
Some specs:
– Power: 6850kW
– Generator efficiency: 32.1%
– Exhaust flow rate: 27.6kg/s
– Exhaust temperature: 560°C
– Output rotational speed: 8300rpm
An update on the AGT-7. They have accumulated more than 20,000 hours of operation on an offshore platform, demonstrating its reliability in salty environments.
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last week 2025 Turbine Expo held at Ningbo..
remarks from CSSC 703rd Institute.
1. The overhaul life of the GT25000 engine is now roughly equivalent to that of the LM2500, with both engines reaching around the 30000-hour level.
2. The CGT30 has nearly caught up with the performance of the LM2500+G4, at least under ISO* conditions (almost 37MW), where it is extremely close in performance metrics.
LM2500 Latest models have 50,000 hours overhaul life as you mentioned. but GT25000 series surpassed 30,000 in TBO. which is roughly equivalent to LM2500 older models.
the complete summary posted by @ACuriousPLAFan just above..
that seems to be the marine model, whereas AGT series seems to just be the power generation model.
I'm not sure GT25000 is a good comparison point, since AGT series is newer and should do better than that.