
Thermal insulations are materials or combinations of materials that, when properly applied, retard the flow of heat energy by conductive, convective and/or radiative transfer modes. Thermal insulations can be fibrous, particulate, film or sheet, block or monolithic, open-cell or closed-cell, or composites of these materials that can be chemically or mechanically bound or supported.
By retarding heat flow, thermal insulations can serve one or more of the following thermal functions :
- Conserve energy by reducing heat loss or gain of piping, ducts, vessels, equipment, and structures;
- Control surface temperatures of equipment and structure for personnel protection and comfort;
- Help control the temperature of a chemical process, a piece of equipment, or a structure;
- Prevent vapor condensation on surfaces with a temperature below the dew point of the surroundingatmosphere;
- Reduce temperature fluctuations within an enclosure when heating or cooling is not needed or available;
- Reduce temperature variations within a conditioned space for increased personal comfort;
- Provide fire protection.
Thermal insulation can serve additional function, although such secondary functions should be consistent with its capabilities and primary purpose. Under certain conditions, insulations may :
- Add structural strength to a wall, ceiling, or floor section;
- Provide support for a surface finish;
- Impede water vapor transmisson and air infiltration;
- Prevent or reduce damage to equipment and structures from exposure to fire and freezing conditions;
- Reduce noise and vibration;
- Reduce growth of mold and mildew.
Thermal insulation is used to control heat flow at all temperatures, the limiting value being its survival temperature.
Go to page :
Basic Materials
Fight Against Global Warming
Thermal Insulation in Science Projects
Ductwork Insulation Holds in Savings
Cold Storage Rooms Insulating Panels
How to Insulate Attic Flooring
Go to page :
Basic Materials
Fight Against Global Warming
Thermal Insulation in Science Projects
Ductwork Insulation Holds in Savings
Cold Storage Rooms Insulating Panels
How to Insulate Attic Flooring