Gas TurbinesH-25 Series
Standalone Gas Turbine Output
40 MW class
Combined Cycle Output
60 MW / 120 MW class
More than 80%
Cumulative total operating time exceeding 6.3 million hours
High reliability gas turbines for industrial customers
The H-25 Series gas turbines were developed for utility customers and industrial customers in both 50 Hz and 60 Hz regions. Its first unit came into commercial operation in 1988.
Then Mitsubishi Hitachi Power Systems (MHPS) continued its efforts to improve the design of the H-25 Series gas turbines. While incorporating advanced elemental technologies and material technologies verified with the H Series gas turbines, we are continuously working to improve performance.
The H-25 Series gas turbines are a heavy duty type that attains high efficiency on the basis of ample experience in manufacturing gas turbines.
They achieve high efficiency with heat recovery steam generators, as co-generation systems or combined cycle power plants.
The H-25 Series features simple cycle gas turbine output of 41 MW and a combined cycle output of around 60 MW for a 1 on 1 configuration and around 120 MW for a 2 on 1 configuration. When applying cogeneration, they supply a maximum of around 70 metric tons of steam per hour.
- Heavy duty structure: A highly reliable structure in consideration of ease of maintenance and long continuous operation
- High efficiency: High performance in various power generation cycles (simple, combined and co-generation)
- Fuel flexibility: Natural gas, off gas, light oil, kerosene, bio-ethanol, etc.
- Package type: Easy to transport and install
|Compressor||Number of Stages||17|
|Combustor||Number of Cans||10|
|Cooling Method||Air Cooled|
|Turbine||Number of Stages||3|
|Rotor||Number of Rotors||1|
|Output Shaft||Cold End|
|Rated Speed||7,280 rpm|
|Gas Turbine||Approx. L × W × H||7.9 × 3.8 × 3.9m|
|Approx. Weight||55 ton|
Simple Cycle Performance
|ISO Base Rating||41.0 MW|
|Efficiency||36.2 % LHV|
|LHV Heat Rate||9,949 kJ/kWh|
|Exhaust Flow||114 kg/s|
|Exhaust Temp||569 °C|
|Turn Down Load||50 %|
|Ramp Rate||3.4 MW/min|
|Starting Time||22 minutes|
Combined Cycle Performance
|1 on 1||Plant Output||60.1 MW|
|Plant Efficiency||54.0% LHV|
|2 on 1||Plant Output||121.4 MW|
|Plant Efficiency||54.5% LHV|
|Starting Time||55 minutes|
Performance Correction Curves
Effects of Compressor Inlet Temperature on Gas Turbine Performance (Typical)
Effects of Barometric Pressure on Gas Turbine Performance (Typical)
The package design of the H-25 Series has the following advantages.
- Minimize on-site installation work and time
- Flexible layout
- Short delivery period
|1||Gas Turbine||55 ton|
|2||Lube Oil Tank, Reduction Gear and Auxiliaries||63 ton|
|4||Air Intake System||36 ton|
|5||Exhaust System (excluding silencer duct, stack)||8 ton|
Typical Plant Layout: Simple Cycle
Typical Plant Layout: Co-generation
Typical Plant Layout: 1 on 1 Combined Cycle
Typical Plant Layout: 2 on 1 Combined Cycle
A co-generation plant with the H-25 Series gas turbine produces the highest steam supply volume in the turbine class and high thermal efficiency.
We offer system engineering in response to a request for a combination of electric power and steam.
|Power Output||39.6 MW|
|Heat Output (6 MPa / 300 deg C)||79 ton/h|
|Overall Efficiency (LHV)||More than 80 % LHV|
- The figures specified above represent gross performance figures for gas fuel under ISO conditions (atmospheric pressure of 1,013 hPa, atmospheric temperature of 15°C and relative humidity of 60%).
Steam Flow without HRSG Supplementary Firing
Steam Flow with HRSG Supplementary Firing
Main Delivery Records
|Qty||Year of starting operation||Plant specifications|
|Niigata thermal Power Station, Tohoku Electric Power Co., Ltd. (Japan)||2||2011||Combined cycle|
|Niigata thermal Power Station, Tohoku Electric Power Co., Ltd. (Japan)||1||2012||Simple cycle|
|Anji, Amber Energy (China)||1||2012||Combined cycle|
|Tatarstan AMMONI Fertilizer, AMMONI (Russia)||1||2015||Co-generation|
|Keramasan Power Plant Extension, PLN (Indonesia)||2||2013||Combined cycle|
|Gas Turbine Units 1 and 2, Himeji No. 1 Power Station, Kansai Electric Power Co., Inc. (Japan)||2||2012||Simple cycle|
|Queen Elizabeth, SaskPower (Canada)||3||2015||Combined cycle|
|Blue Hills Power Station, Bahamas Electricity (Bahama)||1||2013||Simple cycle|
|Yosu, LG Chem (Korea)||1||2014||Co-generation|
|Yoshinoura Thermal Power Plant, The Okinawa Electric Power Co., Inc. (Japan)||1||2015||Simple cycle|
|Daesan, LG Chem (Korea)||1||2015||Co-generation|
|Ningbo, Kefeng Thermal Power (China)||1||2015||Combined cycle|
|Korea Petrochemical Ind. Co., Ltd. (Korea)||1||2017||Co-generation|
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