| Abstrakt: |
Enhancing heat transfer results in an increase in the surface area available for heat transfer (extended surface). The term "extended surface" refers to the heat transmission process that occurs via conduction and convection. Then, a new model with the same function of improving heat transfer was devised, namely porous media. Porous media include gaps that allow fluid to pass through. However, increasing the velocity of the entering air in the test section might create turbulent flow, resulting in the formation of a vortex in the porous material. To provide a consistent distribution of intake air temperature and eliminate turbulent flow that creates a vortex, an inlet chamber test section must be equipped with a flow conditioner. This is done to facilitate the formation of a laminar flow of entering air following abrupt enlargement. This research employs an experimental design. The porous media utilized in this investigation was coconut shell-activated charcoal. Activated charcoal was placed into the test section, and then steam was run over the porous medium for 60 minutes at a temperature of 30°C. Steam enters at a velocity of 1 m/s. With variable step ratios, particularly 0.33, 0.66, 1, 1.33, and 1.66. According to the findings of this study, raising the step ratio can result in an increase in effective thermal conductivity with increasing condensate thickness. Additionally, the greater the step ratio, the less moisture is contained in the steam after it passes through the porous media because the water vapor contained in the flow is absorbed more readily; this is demonstrated by the fact that the greater the step ratio, the more condensate is absorbed, and thus the less moisture is contained in the steam after it passes through the porous media. Steam inflow has low relative humidity. [ABSTRACT FROM AUTHOR] |
