This paper proposes a cascade model predictive control scheme for boiler drum level control. By employing generalized predictive control structures for both inner and outer loops, measured and unmeasured disturbances can be boiler drum level control pdf rejected, and drum level at constant load is maintained. In addition, nonminimum phase characteristic and system constraints in both loops can be handled effectively by generalized predictive control algorithms.
Simulation results are provided to show that cascade generalized predictive control results in better performance than that of well tuned cascade proportional integral differential controllers. The algorithm has also been implemented to control a 75-MW boiler plant, and the results show an improvement over conventional control schemes. Check if you have access through your login credentials or your institution. 2005 ISA – The Instrumentation, Systems, and Automation Society.
European “Pressure Equipment Directive” for production of steam for sterilizers and disinfectors. Wrought iron boilers corrode far slower than their modern-day steel counterparts, and are less susceptible to localized pitting and stress-corrosion. This makes the longevity of older wrought-iron boilers far superior to those of welded steel boilers. Although such heaters are usually termed “boilers” in some countries, their purpose is usually to produce hot water, not steam, and so they run at low pressure and try to avoid boiling.