Adoption of Supercritical Technology - An Affirmative Step by NTPC Limited Targeting Both Energy Security and a Clean

1. Adoption of Supercritical Technology- An Affirmative Step by NTPC Limited Targeting Both Energy Security and a Clean Energy Efficient Economy

2. Presentation Outline Energy Scenario. Efficiency Improvement of Coal-Based Plants - Best opportunity to Mitigate CO2 emission and Combat Climate Change while Ensuring Energy Security for India. Strategies to improve efficiency - Supercritical power plants. - Ultra Supercritical power plants.

3. Promoting Cleaner Power Generation

4. World Electricity Generation:  Dominated by Fossil Fuels

5. Efficiency Improvement through Higher Parameters It is known that the increase in Pressure & Temperature increases the thermal Efficiency. In a thermodynamic Rankine Cycle, steam pressure above 224 ksc and temperature above 374 C are referred as supercritical parameters. The effect of Pressure & Temperature on thermal efficiency of rankine cycle is shown in the slide. Units with Pressure above 300 ksc are called ULTRA SUPERCRITICAL From this it can be concluded that the due to improved efficiencies, Supercritical & Ultra supercritical technologies reduce the environment impact by way of reduced coal consumption. It is known that the increase in Pressure & Temperature increases the thermal Efficiency. In a thermodynamic Rankine Cycle, steam pressure above 224 ksc and temperature above 374 C are referred as supercritical parameters. The effect of Pressure & Temperature on thermal efficiency of rankine cycle is shown in the slide. Units with Pressure above 300 ksc are called ULTRA SUPERCRITICAL From this it can be concluded that the due to improved efficiencies, Supercritical & Ultra supercritical technologies reduce the environment impact by way of reduced coal consumption.

6. Advantages of SC

7. CO2 Reduction by Increasing Efficiency

10. TECHNOLOGY OPTIONS-SUPERCRITICAL TURBINE HEATRATE IMPROVEMENT (Kcal/Kwhr)

11. Efficiency Improvement/ CO2 Mitigation Efforts in NTPC

12. What is NTPC doing? NTPC has already adopted 247/ 565/593 steam parameters for Barh-II Super-critical units under construction : 8 Super-critical units under bulk tendering : 11 Out of 11, S/C units for NTPC: 9 Future planning for S/C units: 7 NTPC is also going for bulk tendering of 11 units of 660 MW with the above advanced super critical steam parameters. Study is underway to zero in on optimum USC steam parameters for upcoming 800 MW to 1000 MW unit size steam power plants.

13. Super Critical Technology in NTPC

14. USC UNITS UNDER BULK TENDERING Sholapur:2x660 MW Meja: 2x660 MW New Nabi Nagar:3x660 MW Mauda-II: 2x660 MW Raghunathpur(DVC):2x660 MW

16. Ultra Super Critical Plants- Efficiency Gains

17. Conclusion Coal has been and shall remain the main fuel for power generation. Improvement of efficiency and clean power generation by adoption of Supercritical / Ultra Supercritical and other advanced technologies etc.

20. Advantages of USC parameters