Computational Safety Evaluation of Universal Dyer

Abstract

The dryer was modeled and analyzed with Midas NFX software. The material of the cabin part and the trays are made of mild steel and properly insulated with asbestos. The velocities of air at the four different inlets 1, 2, 3 and 4 are 50.4028m/s, 51.2968m/s, 62.9867m/s and 54.4643m/s respectively while the air velocities at outlets 1 and 2 are 53.3088m/s and 53.0761m/s respectively. With these flows maintained the issue of pressure buildup of air and ignitable vapour that can result in explosion and pose danger or put the life of the operator at risk is significantly reduced. The largest nonlinear total deformation was 0.005114mm which is too small to be considered as a threat to the operator and/ or the equipment. The possibility of explosion from overstaying of dried combustible solid was taken care of by the temperature controller which make sure that the temperature within the system never go higher than 60oC (140oF) and never go low than 40oC (104oF) depending on the settings. The air distribution was even and adequate as shown by the computational Fluid Dynamics (CFD) which also translated to even and adequate temperature distribution within the system as the fan is only blowing hot air.