Basic Theoretical Backgrounds of the Engineering Design Procedure of a Drying Plant

Abstract

Problem statement: This study was made to reduce energy consumption and increase productivity of drying process in many industries, to achieve the required aim, design arithmetic methods and choose the parameters of the drying machine and computing additional factors including characteristics of materials and air flow effect. Approach: The design of these types of dryers did not include the addressed factors during the design; the study of these new factors will provide better understanding of the process and increase the abilities for improvement. study made to define the engineering design procedure of a material drying plant which include the size (length, width, height) of the operating member, amplitude and vibration frequency that provide necessary productivity, efficient parameters of material and air movement, necessary drying time and to specify quantity and condition of material subjected to drying. Results: The improvement included the conveyer design which consisted of shutters; the shutter design includes size, angle of inclination and gab size. After applying primary data and the standard thermo computation, the dynamic parameters are set and then the geometric parameters. According to the mathematical computation the design was made and then the verifying of the elements of speed of material motion, air current and the wetness of material was built accordingly. The result of this study was mathematical method for defining the dimensions of drying machine to obtain optimum productivity with lowest energy consumption. These mathematical equations can solve the problem of low productivity and high power consumption if implemented correctly and taking into consideration the dynamic and geometric elements of each case. Conclusion: The results of this study can be implemented in many fields of the industry where dryers were used, the application of the mathematical relations can improve the revenue by increasing productivity and lowering power consumption for industry. For further study, the study of thermodynamics on the movement of particles will be advised.