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Insulation & Refractory Applications
The concern today for energy conservation is not just for the reason of high-energy costs as it was in the early 1980s. Today the concern is for reduction of energy use, but also regarding the environmental impact of burning fossil fuels. The more fuel being used, the greater the amounts of greenhouse gas emissions are being ejected into the atmosphere. By designing energy efficient buildings and processes and identifying insulation deficiencies and retrofitting the deficiencies, less fuel is used and environmental pollution is reduced.
Thermography is used in industrial and commercial facilities to identify problems on building envelops and roofs, heated process vessels, transfer lines, valves, cold storage vessels and virtually anything else that utilizes insulation. Other applications for energy conservation include identifying steam loss, electrical resistance, and leakage from or into process vessels, and incomplete combustion.
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Insulation deficiencies on transfer lines. |
Refractory Inspections
Refractory material is basically high temperature insulation. It is usually a non-metallic ceramic type of material and commonly supplied in brick form. Refractory materials are used inside furnaces, ovens, boilers, hot storage tanks and other equipment that produces or contains extremely hot temperatures.
Using thermography to inspect refractory begins with the assumption that a uniform temperature inside a vessel will result in uniform warming of its exterior as heat is conducted to the vessel's walls.
Inspecting a refractory lined vessel before a scheduled shutdown can potentially provide huge savings to the facility. The supervisor knows before hand what and where the problems are and is able to order the right amount of replacement brick and manpower for the repairs.
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Refractory lined vessel in Steel Plant. |
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