Effect of Temperature and Relative Humidity on the Performance of Steamer using Computational Fluid Dynamic (CFD)

摘要

Generally, the tea factories in Indonesia are still using Panning to withering the tea leavesusing a rotating heated cylinder. This traditional method will lead to pollution due to the presence ofsmoke resulted from the burning of logs for heated cylinder. Therefore, as an alternative the use ofsteamer is becoming popular now. The aim of this study is to determine the distribution of velocity,temperature and mass fraction of steam in a steamer which affect the quality of tea. The varyingvelocities of 33.22 m/s, 43.22 m/s and 53.22 m/s are chosen. The computational fluid dynamics (CFD)based approach using finite volume method ANSYS is used. Based on the simulation results, it is foundthat the velocity of 33.22 m/s for conditioning the room is the optimal value of withering the tea leaves. Itis also found that the early steam concentration of 0.95 can be reduced significantly up to zero. Theseresults can be a guideline to design the steamer in more effective way.