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ACOUSTIC BLANKET SPECIFICATION
LT450A-TT-HES (LT232C-A-TT-HES)
INTRODUCTION
Completely CAD designed and CNC produced, Shannon GES Acoustic Blankets are a high quality engineered removable/reusable insulation system designed to reduce problematic noise, minimize maintenance, and improve the surrounding work environment. Engineered to withstand extreme weather and environmental conditions. This Blanket design is Corrosion Under Insulation (CUI)Compliant, Hydrophobic, Water Resistant & Corrosion Resistant for your needs.
Common Applications and Markets
These blankets offer a solution to Noisy complex surfaces and Surfaces that require inspection, service and repair. Liquid Chillers, Compressor Systems, Motors, Blowers, Piping and Fittings, Gear Boxes, Valves, Housings including Pump Housings and Fan Housings.
Service Temperature: Up to 450˚F (232˚C).
Acoustic Performance: 4 – 15 DBA Reduction Overall
Finished Surface Mass: 1.7lb/ft²(8.3kg/m²)-3.7lb/ft² (18.1kg/m²)
Product Components: Outer/Inner Jacketing – 16.5oz/yd² (560g/m²) PTFE Teflon® Impregnated Fiberglass Cloth. Mass Loaded Vinyl “Reflector” – 1.0lb/ft² (4.9kg/m2) or 2.0lb/ft² (9.8kg/m²). The Insulation Core consists of a double layer of plain needled fiberglass mat and Hydrophobic Supermat™ @ 9 pcf (176.2 kg/m3) Type “E” Fiber, encapsulated by the inner and outer jacketing, with a double sewn lock stitch construction, producing a “Self-Contained system”. The Blanket System includes Integral Fasteners for install & removal.
24” IPS Outdoor Service Piping – 12 dBA Reduction
BLANKET THICKNESS SURFACE TEMPERATURE REFERENCE
Operating Temp |
Thickness |
Surface Temp |
Thickness |
Surface Temp |
Thickness |
Surface Temp |
|---|---|---|---|---|---|---|
| 121˚ C (250˚ F) | 25 mm( 1″) | 37.9˚ C (100.2˚ F) | 40 mm( 1.5″) | 33.3˚ C (92.0˚ F) | 50 mm (2″) | 30.8˚ C (87.4˚ F) |
| 149˚ C (300˚ F) | 25 mm( 1″) | 42.6˚ C (108.6˚ F) | 40 mm( 1.5″) | 36.8˚ C (98.2˚ F) | 50 mm (2″) | 33.5˚ C (92.3˚ F) |
| 177˚ C (350˚ F) | 25 mm( 1″) | 47.3 ˚C (117.2˚ F ) | 40 mm( 1.5″) | 40.3˚ C (104.6˚ F ) | 50 mm (2″) | 36.3˚ C (97.4˚ F ) |
| 204˚ C (400˚ F) | 25 mm( 1″) | 52.2˚ C (126.0˚ F) | 40 mm( 1.5″) | 44.0 ˚C (111.2˚ F) | 50 mm (2″) | 39.3 ˚C (102.7˚ F) |
| 232˚ C (450˚ F) | 25 mm( 1″) | 57.2˚ C (135.1˚ F) | 40 mm( 1.5″) | 47.8 ˚C (118.0˚ F) | 50 mm (2″) | 42.3 ˚C (108.2˚ F) |
* The above referenced Cold Face Surface Temperatures should be used as guidelines for blanket insulation thickness design.
* The Cold Face Surface Temperature of the blanket should approach surrounding ambient temperature conditions.
* The economic thickness of the blanket should consider blanket cost, thermal performance and blanket design constraints.
* Heat Loss Calculations are based on a 21.1˚ C (70˚ F) ambient temperature using a flat surface condition.
THICKNESS |
SURFACE MASS |
Noise Reduction Range |
|---|---|---|
| 1” (2.5CM) | 1.8 lb/ft² to 2.8 lb/ ft² (8.8-13.7kg/m²) | 1.5 DBA to 6 DBA Reduction |
| 1 ½” (3.8CM) | 2.2 lb/ ft² to 3.2 lb/ ft² (10.7-15.6kg/m²) | 4 DBA to 8 DBA Reduction |
| 2” (5CM) | 2.6 lb/ ft² to 3.6 lb/ ft² (12.7-17.6kg/m²) | 5 DBA to 10 DBA Reduction |
| 2 ½” (6.4CM) | 3.0 lb/ ft² to 4.0 lb/ ft² (14.7-19.5kg/m²) | 7 DBA to 13 DBA Reduction |
* The above referenced Acoustic Performance should be used as a guideline for blanket insulation thickness design.
* The Acoustic Performance of the blanket should be bench marked against the ambient noise condition.
* The economic thickness of the blanket should be considered in selection of a target reduction with consideration to blanket design constraints.
* Contact Shannon for guidance in selection, as the historical performance of each application varies significantly.