based on equations of unstable thermal conductance in the ware and the lining of the kiln car and equations of gas continuity,thermal equilbrium and material balance,this paper has advanced a dynamic mathematical model for constant-temperature and constant-oxygen computer control of the tunnel furnace.The experimental study of numerical modelling on the NCR-8570 computer by using FORTRAN has revealed various relationhips among fuel consumption,primary air blow-in,cold air blow-in and exhaust discharge.And...

based on equations of unstable thermal conductance in the ware and the lining of the kiln car and equations of gas continuity,thermal equilbrium and material balance,this paper has advanced a dynamic mathematical model for constant-temperature and constant-oxygen computer control of the tunnel furnace.The experimental study of numerical modelling on the NCR-8570 computer by using FORTRAN has revealed various relationhips among fuel consumption,primary air blow-in,cold air blow-in and exhaust discharge.And the relationship between atmosphere regulation in the clinkering zone and fuel consumption as well as the stability of atmosphere regulation has also been studied. As the author believes,the dynamic mathematical model presented in this paper,along with a mathematical model for practical control expected to be advanced,will make it possible to use computer mathematical models in the on-line control of the funnel furnace.

A mathematical model for computer control of tunnel kiln was developed accor- ding to the transient heat conduction equation for products and lining bricks of tunnel kiln car,the gas continuity equation,and the heat and material balance equations.Further on,numerical simulation experiments were conducted on a NCR-8570 computer concerning a tunnel kiln for firing fireclay bricks. The relationships of fuel consumption,flow rates of primary air,cooling air and exhaust gas,to the time are obtained.The relation...

A mathematical model for computer control of tunnel kiln was developed accor- ding to the transient heat conduction equation for products and lining bricks of tunnel kiln car,the gas continuity equation,and the heat and material balance equations.Further on,numerical simulation experiments were conducted on a NCR-8570 computer concerning a tunnel kiln for firing fireclay bricks. The relationships of fuel consumption,flow rates of primary air,cooling air and exhaust gas,to the time are obtained.The relation between the atmosphere schedule and fuel consumption in firing zone as well as the stability in the atmo- sphere schedule and temperature program of tunnel kiln were also studied. The results of numerical experiments show that the proposed model makes the computer control of tunnel kilns possible.

In this paper, the author has proposed a mathematical model for thermal equilibrium in the numerically controlled tunnel kiln and also developedits computation method: The computing practice has been carried out on the NCR-8570 computer with FORTRAN used as a language for developing the source program. It has been shown that the mathematical model and its computation introduced here is valid and viable.