air outlets | Ventilation Grilles
Sand Trap
Product Overview
Sand Trap Louver is normally used as prefilter for fresh air intake of Air Handling Units (AHU), Package Air Conditioning Units (PACU), Roof Top Fresh Air Units (RTFAU) for Air Conditioning Systems and for Fresh Air Intake in manufacturing plants. It has a high degree of separation of sand and large dust particles even in case of high dust concentrations. The vertically arranged blade sections and holes for sand drainage ensure that the sand trap louver is self cleaning and maintenance free. It is designed to separate large particles of sand and dust from airstream at low velocities, thus avoiding excessive dust loading of conventional filters. It is not intended as a substitute for conventional filters.
Construction
1- Frame
Made from high quality extruded aluminum profiles
with 115 mm depth 1.2 mm.
2-Blade
Made from high quality extruded aluminum profiles
with 100 mm depth 1.2 mm.
3- Drain
20 mm Dia self-drain holes at the bottom of the louver.
Description
The frame and blades are of high quality extruded aluminum profiles with 1.2 mm and 1.5 mm thickness
Can be manufacture from galvanized steel as option
Composed of two sets of inverted u – channels mounted vertically on two opposite rows
Drain holes of diameter 20 mm are provided in two rows at the bottom of the Louver for emptying fiItered sand and dust
Sand trap can be supplied with galvanized iron wire mesh 1.5 mm Thickness as standard with flexibility of supplying
Sand trap can be supplied with a removable volume control damper which ensures positive control over the fresh air stream
Sand trap can be supplied with easily removable filter with 20 mm Thickness as standard and non standard thicknesses are available as option
Designed Te separate sand and dust from the air
Aluminum anodized finish or powder coated color finish per RAL color codes and flexibility of finish
Installation
Air Performance
Air Performance
The filtration performance is dependent on the dust
particle size and air velocity.
For normal operation condition the sand trap louvers
should be selected for a maximum free area velocity
of 600 feet per minute (FPM).
Example:
Given:
Airflow: 2658 CFM
Assumed free area velocity: 600 FPM
Calculate for free area, neck size and pressure
drop.
- Free Area = 2658 CFM/600 FPM = 4.43 ft².
- From Free Area Chart the outer frame size is
48in X 48in (W1 X H1).
- From Table 1 neck size is 1200mm X 1200mm
(WXH).
- Pressure drop = 0.151 in. W.G. (38Pa).
How to order
