No abstract

No abstract

No abstract

Abstract-In this study, the development of CFD model for the description of operation of electrostatic precipitator has been developed. The model is based on the simulation analysis whereby focused on the gas flow by time-averaged conservation equation of mass and momentum. 2D geometry model was extensively applied due to ease the geometry and analysis. The flow simulation was performed by using computational fluid dynamics (CFD) code Fluent. Numerical calculations for the air flow were calculated using the Reynolds-averaged Navier-Stokes equation coupled with the realizable k-ε turbulence model equations. Simulations were performed using three velocities at the inlet boundary by considering a uniform (ideal) velocity profile. Simulation with the low velocity profile gives a better flow rate efficiency between the outlet and inlet of the ESP. Overall, all the three velocities give more than 90% of efficiency of the air flow inside ESP chamber.Index Terms-Electrostatic precipitator, CFD, velocity and flow simulation.

The wind is air that moves from a high-pressure area to a low-pressure area. Indonesia has the potential of winds that have speeds ranging from 2 m/s to 6 m/s which blow for a period of 6 hours/day. Many researchers have examined what kinds of problems are in the context of wind turbine energy generation. This study discusses the effect of wind speed and variations in the number of turbine blades on the power generated by horizontal wind turbines to rotate generators, case studies on the coast of Banda Aceh. The windmill used is a horizontal turbine propeller type with 5, 6 and 7 blade variations and made from Meranti wood. Electricity data retrieval is done by pairing the generator, so that the data taken in this measurement is in the form of wind speed data (m/s), speed of rotation of the wheel shaft and generator shaft, and generator voltage (V) and electric current generated. Data collection is carried out for 6 days at 3-9 m/s wind speed. The results showed that for wind speeds below 5 m/s it is more ideal to use a small number of turbines and for wind speeds greater than 7 m/s it is better to use a turbine blade with a large number of blades.