Heat Rate Optimisation Methods
This intensive training program is designed to equip professionals with the knowledge and skills needed to optimize heat rates in thermal power plants. By focusing on advanced strategies and practical applications, participants will learn how to improve efficiency, reduce fuel consumption, and enhance overall plant performance.
1. Plant efficiency as measured by heat rate methods covered
a. Input /Output – Btu (Kcal)/Kilowatt
b. Turbine Heat Rate /Boiler Efficiency
c. Corrected Design
d. Stack CO2 flow /kW
2. Coal Balance – Tracking
a. Stockpile inventories
b. Weighing accuracy
c. CV change – Loss
3. Input /Output Method
a. Heat Input – not as accurate as output, kW
i. Weight
1. Accuracy Handbook 44
2. Material Testing
3. Consistent vs Accurate
ii. Coal Sample
1. Mechanical is best
2. Hard work
3. High ash or moisture impacts accuracy
b. Output is accurate – kW(hr)
c. Does not Identify individual issues
d. Most common, some use mine analyses
4. Turbine Heat rate /Boiler Efficiency
a. Turbine heat rate adjusted from design
i. Input – SH/RH flow, temp, and pressure
ii. SH/RH attemperation flows
iii. Feedwater heater performance
iv. Output – Condenser conditions
v. Helps identify issues
b. Boiler Efficiency
i. Output /Input
1. Steam flow and conditions
2. Coal flow and sample
ii. Heat loss method
1. Need air heater leakage
2. Excess air
3. Coal sample for ultimate analysis
4. Exit gas conditions – Temps
5. Ash sample for LOI – carbon loss
6. Helps identify issues
7. Might be more accurate, less sensitive to flow measurement
5. CO2 method for Heat Input
a. Must measure CO2 and gas flow
b. Might not be as accurate as method (4.)
6. Heat rate cheating – what heat rate do you want
7. Questions and Answers