Calsilite calcium silicate insulation blocks

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Reference no: EM13703192

Calcium Silicate has replaced asbestos as the preferred insulation for steam lines in power plants. Consider a 40 cm O.D., 4 cm wall thickness steel steam line insulated with a 12 cm thickness of calcium silicate. The insulation is protected from damage by an aluminum sheet lagging that is 2.5 mm thick. The steam temperature is 565 C and ambient air temperature in the power plant is 26 ?C. The inside convective resistance is negligible, the outside convective heat transfer coefficient can be taken as 11 W/m2K, and the emittance of the aluminum is 0.1. Calculate the rate of heat loss per meter. Thermal conductivity of the pipe wall and Calsilite calcium silicate insulation blocks are 40 W/(m K) and 0.092 W/(m K) respectively.

Reference no: EM13703192

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