Whenever operating temperature is higher than the ambient temperature. Heat losses occur due to conduction, convection or radiation during the process. To avoid these heat losses thermal Insulation is applied on surface of equipment or pipeline to maintain designed temperature. It is also widely used in personal protection across industries. Materials used in hot insulation must have high melting point to resist temperature along with low K Values and should be fire retardant.
- Thermal Conductivity of a material
- Water / Moisture Permeability
- Fire Retardant Properties
Primary goal of Thermal Insulation is to Conserve energy, to maintain process temperature and to avoid condensation in context to reduce operating cost of any process.
During cold insulation as ambient temperature is higher than the surface temperature than moisture in air condenses on surface to avoid condensation surface must be insulated with appropriate Insulation material with sufficient thickness and protected by vapour barrier. If insulation system is not appropriate it result into energy loss further will reduce service life and performance, corrode pipes, vessel and fitting within the insulation and cause water related damages to the machinery.
- Thermocole ( Expanded Polystyrene foam) Insulation Commonly know as EPS
- Polyurethane Foam ( Puff Insulation ) / Polyisocyanurate (PIR insulation )
- Chemically Cross link Polyethylene Commonly known as XLPE
- Elastomeric Nitrile Rubber Insulation / EPDM Rubber Insulation
- Perlite Rigid Insulation ( Used in both Hot & Cold Applications )
- Fiberglass Wool ( Used in Both Hot & Cold Application )
- Ambient Temperature
- Process / Design Temperature
- Material Structure
- Thermal Conductivity
- Water Vapor Permeability of Insulation Material
- Surface Emissivity
- Dew Point Temperature