Local Exhaust Ventilation (LEV) is required to absorbed the chemical and at the same time to maintain the air quality. This
study is purposed to create new design of LEV system that believe can remove air contaminants in the chemical store buildings. This
research was conducted using two (2) types of LEV system which are 4 air-inlets LEV (type 1) and 3 air-inlets LEV (type 2). That LEV
has been simulated using ANSYS FLUENT software for their air flow performances. LEV material and the cost of production were
considered parameter for fabricating and effectiveness of LEV system. Results show that air velocity in LEV type 1 was gradually
uniform throughout its ducting network but it increased at the 90º bend section with a maximum air velocity of 31.054 m/s. In the LEV
type 2, the air flow simulations depicted uniformity velocity values of 8.12 m/s, 8.58 m/s and 7.69 m/s at every inlet respectively. The
finding suggests that LEV type 2 was more efficient compared to LEV type 1 due to increasing streamline air velocity.