This paper deals with the state and unmeasured disturbance estimation within the nonlinear model predictive control of the superheated steam temperature in a once-trough boiler of a fossil fuelled power plant. The nonlinear model of the once-trough boiler has very high order, it is significantly nonlinear and load dependent. Model is excited by several disturbances, but not all of them are meas...

The Superheated steam has been shown to be more effective than hot air for drying corn. Modeling studies have carried out in fluidized bed dryers determine the moisture and heat transfer characteristics of corn, but there are no modeling a single corn kernel. Knowledge mass kernel would produce better understanding needed specific rates. study sought influence temperature velocity on rate It us...

It has been recorded in literature that superheated steam the ability to combine parboiling operation (steaming and drying) of paddy (Oryza sativa - UPL1) rice into a single unit. According literature, this process not fully explored implemented processing. In research work, dryer was used parboil (steam dry) rice. Soaking time temperature 12hours at 60°C, with steaming ranging from 10 24mins, ...

Abstract Superheated steam acts as both a heat source and drying medium. The study sought to predict the evolution of moisture transport behaviour corn kernel at various axial distances varying instantaneous time. equations describing phases were solved using numerical solutions with Eulerian technique in ANSYS software. Cone geometry was used simulate initial content 20% w.b. Steam conditions ...

Proposed the PID controller parameters tuning method based-on New Luus-Jaakola (NLJ) algorithm and satisfaction idea. According to the different requirements of each performance index, designed the satisfaction function with fuzzy constraint attributes, and then determined the comprehensive satisfaction function for PID tuning by NLJ algorithm. Provided the steps of PID controller parameters tu...

It is very important in the design of a drying system is to evaluate sticking behaviour of the materials goes under drying. A new approach to the sticking issue is applied in this study by carrying out a sticking test for the liquid associated with the materials under study. It was found that the liquid bridge is responsible of the initial sticking of the materials to the contact surface and th...