Advanced Supercritical Boiler Technologies - Doosan Power Systems
Advanced Supercritical Boiler Technologies - Doosan Power Systems
Advanced Supercritical Boiler Technologies - Doosan Power Systems
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WHY ADVANCED SUPERCRITICAL?<br />
CO 2<br />
Reduction<br />
- 95%<br />
Baseline<br />
TRACK 2: Carbon Capture<br />
and Storage (CCS)<br />
TRACK 1: Increased Efficiency<br />
• Both tracks are required to mitigate CO 2 emissions from coal fired generation<br />
• Primary means to increase efficiency is to increase the steam conditions we use in our power plant cycle<br />
WHY ADVANCED SUPERCRITICAL?<br />
• Efficiency of the Rankine Cycle<br />
increases with increasing Turbine inlet<br />
Temperature and Pressure<br />
• Cycle efficiency of typical sub-critical<br />
plant is 38% whereas today’s<br />
supercritical technology increases this<br />
to around 45-47%<br />
<strong>Advanced</strong> Ultra<br />
Sub-Critical Super-Critical Super-Critical Super-Critical<br />
220.89 250 290<br />
Main Steam Pressure (bar)<br />
540 570 610<br />
Main Steam Temperature (°C)<br />
Time<br />
• <strong>Supercritical</strong> means above the “critical”<br />
point for water / steam (220.89 bar) after<br />
which there is no phase change between<br />
water and steam<br />
Page 2<br />
• Other terms “<strong>Advanced</strong> <strong>Supercritical</strong>” and<br />
“Ultra <strong>Supercritical</strong>” are loose definitions to<br />
indicate steps in technology as opposed to<br />
any distinction in thermodynamic<br />
properties<br />
Page 3<br />
2
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