Double Stage Exterior Vent Aluminum External Louver
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Double Stage Exterior Vent Aluminum External Louver

Double Stage Exterior Vent Aluminum External Louver

Overview Product Description Vertical Double Bank Louver VDL150-3 Rainwater Penetration Coefficient of Entry Tested by B
Basic Info
Model NO. Togen
Specification louver height: 1055mm
Trademark Togen
Origin China
HS Code 73089000
Production Capacity 4500 Meter/Meters Per Day
Product Description
Product Description

Double Stage Exterior Vent Aluminum External Louver

Vertical Double Bank Louver VDL150-3

Blade Pack Depth145mm
Frame Depth150mm
Pitch75mm
Visual ImpactHidden
Free Area/

Rainwater Penetration
VENTILATION RATEWATER FLOW RATESEffectivenessClass
Volume
m³/s
Velocity
m/s
Supply
l/h
Penetrated
l/h
0.000.0097.20100%A
0.460.5097.20100%A
0.931.0097.20100%A
1.391.5097.20100%A
1.862.0097.20100%A
2.322.5097.20100%A
2.793.0097.20100%A
3.263.5097.20100%A

Coefficient of Entry
loure face velocityair flow rate
louver pd
Pascals
m/stest
m³/s
theoretical
m³/s
coefficient
Ce
10.31.101.0263.8360.268
24.21.721.5965.8810.271
37.52.172.0227.3200.276
52.72.572.3958.6780.276
66.22.902.6939.7260.277
79.93.202.97310.6850.278
95.43.473.23211.6760.277
112.03.723.45912.6510.273
130.04.013.73513.6300.274
143.04.273.96914.2950.278
mean Ce0.275
Class3

Tested by BSRIA-EN-13030:2001

Double Stage Exterior Vent Aluminum External Louver

Design

DesignOur performance louver systems are designed using airflow simulation by CFD(computational fluid dynamics)software to get the best balance between airflow and rain defense performance

Testing

Testing

Weather Louvre: UK BSRIA/US AMCA Testing

The industry standard for weather testing of Louver in the UK was developed by BSRIA(Building Services Research & Information Association) and HEVAC adopted in 2001 as a British & European Standard: BS EN 13030:2001. The principles of EN 13030 are replicated in the USA under the AMCA Standard 500-L, "Laboratory Methods of Testing Louvers for Rating"All of our louver systems have been tested either by BSRIA or by AMCATwo key performance areas:1. Rain Defence ClassificationThe ability to prevent rainwater from penetrating the louver
Class EffectivenessMax. allowed rain penetration l/h/m²
11 to 0.990.75
20.989 to 0.953.75
30.949 to 0.8015.00
4Below 0.80Greater than 15.00
NOTE: Water Penetration Effectiveness is measured for each of eight face velocities between 0m/s and 3.5m/s under fan-driven wind at a speed of 13m/s and water sprayed as rainfall at a rate of 75 l/h conditions.2. Discharge Loss Coefficient ClassificationA high coefficient means low resistance and high airflow performance
ClassAirflow EffectivenessPerformance Rating
10.4 to 1Excellent
20.3 to 0.399Very Good
30.2 to 0.299Good
40.199 & belowFair

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Bird Mesh ScreenNotes:
W--Width of the mesh
D--Diameter of the wire
Regular Size of Insect/Bird Mesh Screen(mm)
MeshWidth of the meshDiameter of the wire
Insect Mesh Screen1.5*1.50.25
2*20.5
2.5*2.50.5
Bird Mesh Screen5*50.8
10*101,1.6
11.2*11.21.6
12.5*12.51.6
Notes:
S--SWD
L--LWD
T--Strand thickness
Bird Mesh Screen(Diamond)
MeshWidth of the meshStand thickness
Bird Mesh Screen(Diameter)10*201,1.5
20*401,1.5
Packaging & ShippingPackaging & Shipping

Project ReferenceProject Reference

Double Stage Exterior Vent Aluminum External Louver


If you are interested in our products or have any questions. Please feel free to contact us!