A boiler drum BDT921 that is installed in the Control Laboratory, Department of Mechatronics and Robotics Engineering, Faculty of Electric and Electronic Engineering, Universiti Tun Hussein Onn Malaysia （UTHM） is be...A boiler drum BDT921 that is installed in the Control Laboratory, Department of Mechatronics and Robotics Engineering, Faculty of Electric and Electronic Engineering, Universiti Tun Hussein Onn Malaysia （UTHM） is being used as a model plant to achieve the digital control system since its analog. Implementing a digital system to boiler quite a though work. This paper covers analysis from the experiment done to match with digital design that will be implemented to the real system. The digital control design will come up with the mathematical model and will be analyzed with MATLAB and SIMULINK software named as ＂Discrete Analysis ofBDT921 Simulation＂. A proportional integral and derivative （PID） controller is being chosen as the control element in discrete form as the real system is using the same control element. The output responses behave as the second order system with a bit difference in rise times and peak times compared with data obtained from experiment. With regarding to the analysis done, the digital control can be implemented and for further viewing, to be controlled digitally with computer in the control room.展开更多
This study presents the concept of a cyclone furnace for coal dust oxy-fuel combustion and gasification. The results of numerical calculations for the combustion and gasification processes were also presented.
A mathematical model for atmospheric staged circulating fluidized bed combustion, which takes fluiddynamics, combustion, heat transfer, pollutants formation and retention, into account was developedin the Institute of...A mathematical model for atmospheric staged circulating fluidized bed combustion, which takes fluiddynamics, combustion, heat transfer, pollutants formation and retention, into account was developedin the Institute of Engineering Thermophysics (IET) recently. The model of gas solid flow at the bot-tom of the combustor was treated by the tworphase theory of fluidized bed and in the upper regionas a core-sannulus flow structure. The chemical species CO, CO2, H2, H2O, CH4, O2 and N2 wereconsidered in the reaction process. The mathematical model consisted of sub-models of fluid namics,coal heterogeneous and gas homogeneous chemical reactions, heat transfer, particle fragmentation andattrition, mass and energy balance etc. The developed code was applied to simulate an operating stagedcirculating fluidized bed combustion boiler of early design and the results were in good agreement withthe operating data. The main submodels and simulation results are given in this paper.展开更多
文摘A boiler drum BDT921 that is installed in the Control Laboratory, Department of Mechatronics and Robotics Engineering, Faculty of Electric and Electronic Engineering, Universiti Tun Hussein Onn Malaysia （UTHM） is being used as a model plant to achieve the digital control system since its analog. Implementing a digital system to boiler quite a though work. This paper covers analysis from the experiment done to match with digital design that will be implemented to the real system. The digital control design will come up with the mathematical model and will be analyzed with MATLAB and SIMULINK software named as ＂Discrete Analysis ofBDT921 Simulation＂. A proportional integral and derivative （PID） controller is being chosen as the control element in discrete form as the real system is using the same control element. The output responses behave as the second order system with a bit difference in rise times and peak times compared with data obtained from experiment. With regarding to the analysis done, the digital control can be implemented and for further viewing, to be controlled digitally with computer in the control room.
文摘This study presents the concept of a cyclone furnace for coal dust oxy-fuel combustion and gasification. The results of numerical calculations for the combustion and gasification processes were also presented.
文摘A mathematical model for atmospheric staged circulating fluidized bed combustion, which takes fluiddynamics, combustion, heat transfer, pollutants formation and retention, into account was developedin the Institute of Engineering Thermophysics (IET) recently. The model of gas solid flow at the bot-tom of the combustor was treated by the tworphase theory of fluidized bed and in the upper regionas a core-sannulus flow structure. The chemical species CO, CO2, H2, H2O, CH4, O2 and N2 wereconsidered in the reaction process. The mathematical model consisted of sub-models of fluid namics,coal heterogeneous and gas homogeneous chemical reactions, heat transfer, particle fragmentation andattrition, mass and energy balance etc. The developed code was applied to simulate an operating stagedcirculating fluidized bed combustion boiler of early design and the results were in good agreement withthe operating data. The main submodels and simulation results are given in this paper.
