Delivered in a PDF format, this guidebook exclusively features guidance and strategies on feedwater. Articles were previously featured in POWER magazine.
- How to Avoid Feedwater Heater Drain Design Pitfalls
- Coordinated Feedwater Heater Energy Control
The increased use of intermittent renewable energy sources and the shift to gasfired combustion turbines places new burdens on the dispatch of many coal-fired units. Steam units must now operate at very low minimum load while maintaining the ability to ramp up and down quickly. High-pressure feedwater heater energy control can improve the system response of such coal-fired units.
- Improve Plant Heat Rate with Feedwater Heater Control
- Feedwater Chemistry Meets Stainless Steel, Copper, and Iron
Developing a feedwater chemistry program that will minimize corrosion across a variety of metallurgies doesn’t have to be difficult. This article reviews the requirements for three common metallurgies in condensate and feedwater piping and the chemistry options that operators have to minimize corrosion in this critical area of the plant.
- Coal-Fired Power Plant Heat Rate Improvement Options, Part 1
Even without regulatory considerations, there are good reasons for virtually every coal-fired power plant to improve its heat rate. The Electric Power Research Institute (EPRI) has looked at dozens of methods for improving heat rates and evaluated their applicability and costs. Part 1 of this two part series explains the basics of heat rate improvements and the range of possible options explored in recent EPRI reports.
- Establishing Proper Pressure Drop for Feedwater Flow Control Valves
Feedwater control valves play a critical role in boiler operation. One important parameter of their design is the pressure drop at the rated condition as well as off-design conditions. However, conventional methods used for establishing control valve pressure drop cannot be used at face value without reviewing all plant operating scenarios.
- Fully Automating HRSG Feedwater Pumps
Modern distributed control system platforms can provide many tools to capture best operating practices and automate them. This case study shows the steps taken to automate a hypothetical simplified feedwater pump system for a combined-cycle power plant. It describes a combination of controls automation strategies and human-machine interface techniques designed to increase the overall level of automation while improving ease of use.
- Power 101: Improving the Performance of Boiler Auxiliaries, Part III
- More Strategies for Inspecting HRSGs in Two-Shift and Low-Load Service
- Selecting a Combined Cycle Water Chemistry Program
The lifeblood of the combined cycle plant is its water chemistry program. This is particularly true for plants designed for high pressures and temperatures as well as fast starts and cycling. Even though such plants are increasingly common, no universal chemistry program can be used for all of them.