Heat Rate Optimization

The objective of this videotape is to present the basic power plant cycle and the energy conversions that take place throughout the cycle. The effect that various parameters have on the cycle efficiency are also discussed.

Upon completion of this videotape and the workbook exercises, the operator should be able to understand:

• Where energy is lost and gained in the power plant cycle.
• The use of enthalpy as a measure of energy.
• The meaning of steam quality (wetness) at the turbine exhaust.
• How to convert units of heat energy into units of electrical energy.
• How to determine turbine cycle efficiency.
• The effect of changing main steam temperature on turbine cycle efficiency.
• The effect of changing condenser back pressure on turbine cycle efficiency.
• How to determine boiler efficiency.
• How boiler efficiency and turbine cycle efficiency can be used to determine overall plant efficiency.
• The difference between gross plant heat rate and net plant heat rate.
• What factors determine boiler efficiency.
• The effect of changing main steam pressure on turbine cycle efficiency.