A classic resource that helps reduce boiler operating costs through a detailed, comprehensive, and applicable explanation of all aspects of boiler processes. It presents the basics of boiler control, the interrelationships of the process characteristics, and the dynamics involved, with a signifcant emphasis on start-up, shut down, flame monitoring, and safety interlock measures. Designed for professionals with a good understanding of boiler jargon, thermodynamics, and math fundamentals.
Describes control systems for boilers and heat-recovery steam generators (HRSGs) in a variety of applications, from waste-to-energy plants to combined-cycle gas-turbine power stations. Basics such as methods of connecting instruments are explained, and more advanced discussions of design features of distributed control systems are also included. At every stage, emphasis is given to the interactive nature of plants and to troubleshooting and problem solving. Includes chapter summaries. The author is Fellow of the Institution of Electrical Engineers, and the Institute of Marine Engineers, and is a Senior Member of the Instrument Society of America. Annotation copyrighted by Book News, Inc., Portland, OR
Introductory technical guidance for mechanical engineers and construction managers interested in boiler controls. Here is what is discussed: 1. GENERAL 2. CONTROL LOOP TYPES 3 AIR TO FUEL-RATIO 4. BOILER DRUM LEVEL 5. MULTIPLE BOILERS 6. REFERENCES.
Boiler Control Systems provides definitive information on the design, implementation, maintenance, & operation of large-scale control systems for boilers. It forms a bridge between the disciplines of the electronics engineer & the plant engineer to enable each to understand the issues involved. The book deals first with plant engineering issues, then moves on to consider control systems themselves, & finally a wide range of practical considerations such as commercial aspects, measurements & site considerations. Boiler Control Systems will be of immense use to boiler designers, systems engineers in process control, plant owners, operators, & maintenance staff.
Introductory technical guidance for mechanical and electrical engineers interested in control systems for steam and hot water boilers. Here is what is discussed: 1. TYPES OF CONTROLS 2. GENERAL REQUIREMENTS 3. PANEL INSTRUMENTS 4. LOCAL DEVICES AND INSTRUMENTATION 5. RECOMMENDED BOILER INSTRUMENTATION 6. CONTROL LOOPS.
This book is for anyone who works with boilers: utilities managers, power plant managers, control systems engineers, maintenance technicians or operators. The information deals primarily with water tube boilers with Induced Draft (ID) and Forced Draft (FD) fan(s) or boilers containing only FD fans. It can also apply to any fuel-fired steam generator. Other books on boiler control have been published; however, they do not cover engineering details on control systems and the setup of the various control functions. Boiler Control Systems Engineering provides specific examples of boiler control including configuration and tuning, valve sizing, and transmitter specifications. This expanded and updated second edition includes drum level compensation equations, additional P&ID drawings and examples of permissive startup and tripping logic for gas, oil, and coal fired boilers. It also covers different control schemes for furnace draft control. NFPA 85 Code 2007 control system requirements are included, with illustrated examples of coal fired boilers, as well as information on the latest ISA-77 series of standards.
This book examines key issues in improving the efficiency of small and medium power boiler units by adding control systems for the fuel combustion process. The original models, algorithms, software and hardware of the system developed for controlling the fuel combustion process are presented. In turn, the book presents a methodology for assessing the influence of climatic factors on the combustion process, and proposes new methods for measuring the thermophysical characteristics, which require taking into account the concentration of oxygen in the air. The system developed here was implemented on a boiler of the NIISTU-5 type, which is widely used for heat power engineering in Ukraine and other Eastern European countries. Given its scope, the book offers a valuable asset for researchers and engineers, as well as lecturers and graduate students at higher education institutions dealing with heat engineering equipment.
Boiler Dynamics and Control Course Notes Now Available By Cyrus W. Taft, P.E. Early in my career (late 1970s) at Southern Company Services I had the opportunity to attend two one-week training courses at Power Technologies, Inc. in Schenectady NY. One course was on Power Plant Performance taught by John Westcott and the other was on Boiler Dynamics and Controls taught by Paul de Mello. Both of these courses were excellent and made a significant impression on me from the standpoint of how much there was to learn and the direction I wanted my career to go. My work at Southern and later EPRI involved both plant performance and plant control but I was more involved with control systems as time went on. Consequently, I have remained in contact with Paul de Mello over the years. I have also kept my copy of the notes from both courses as a reference. Recently Paul approached me with an offer I could not refuse. He wanted to contribute his course notes to the industry and asked if ISA POWID would like to distribute them as a service to its members. I thought it was a great idea and pursued it with the POWID Board and with ISA staff. After getting a thumbs-up from both groups I scanned the course notes into pdf files which are now available for download from the ISA POWID web site (http://www.isa.org/MSTemplate.cfm?MicrositeID=538). You can download either a single large file (~18 MB) with all the chapters included or you can download individual chapters. From the Table of Contents below it is clear that the notes cover all aspects of boiler dynamics and control. You may be thinking that these notes are pretty old so they probably are not that useful today but I beg to differ. While control hardware has certainly changed drastically in the past 30 years, boiler dynamics have not. These notes provide considerable insight into boiler dynamics including physics, modeling, analysis and actual test results. They also provide a great historical perspective on the development of modern control and simulation methods When you download the notes, please look at the Front Matter which includes Paul's biography and his thoughtful Acknowledgements to colleagues. Paul is a Fellow in both ISA and IEEE and has published over 100 technical papers on power plant and power system dynamics. ISA and POWID appreciate this generous contribution to the industry by one of the true pioneers in the area of power plant dynamics and control. Text Chapters Front Matter Table of Contents, Author Bio, Acknowledgements I. Boiler Process Dynamics and Control Overview II. General Principles and Structures in Boiler Controls III. Drum Boiler Pressure Effects IV. Drum Boiler Feedwater Controls V. Fuel and Air Controls for Drum Boilers VI. Furnace Draft Controls VII. Steam Temperature Controls VIII. Miscellaneous Control Loops IX. Controls for Once-Through Boilers X. Analog Control Hardware XI. Direct Digital Control XII. Modeling from First Principles Appendix Material A. Dynamic Systems Differential Equations Transient and Steady State Solutions Operational Impedance B. La Place Transforms C. Transfer Functions Block Diagrams D. Analog Computation State Space Numerical Methods of Differential Equation Solutions E. Feedback Control Concepts Frequency Response F. Notes on Process Control and Controller Tuning
