During a test on pipe lagging a 2 metre length of pipe, 80 mm external diameter...

 

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During a test on pipe lagging a 2 metre length of pipe, 80 mm external diameter was covered with a 40 mm thickness of lagging. The pipe was then coupled to a steam main which supplied steam at 700 kPa and 0.9 dry. As a result of heat loss through the lagging, 0.565 kg of condensate was collected from the pipe in 1 hour. The condensate was at saturation temperature for 700 kPa. The outside surface temperature of the lagging was 38°C. Assuming that the inside surface of the lagging was the same as the saturation temperature of the steam, estimate the coefficient of thermal conductivity of the lagging in W/(m.K). (0.12668 W/(m.K) During a test on pipe lagging a 2 metre length of pipe, 80 mm external diameter was covered with a 40 mm thickness of lagging. The pipe was then coupled to a steam main which supplied steam at 700 kPa and 0.9 dry. As a result of heat loss through the lagging, 0.565 kg of condensate was collected from the pipe in 1 hour. The condensate was at saturation temperature for 700 kPa. The outside surface temperature of the lagging was 38°C. Assuming that the inside surface of the lagging was the same as the saturation temperature of the steam, estimate the coefficient of thermal conductivity of the lagging in W/(m.K). (0.12668 W/(m.K)

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SATURATED STEAM PROPERTIES FROM STEAM TAOLE PIPE EXTERNAL DIAMETER Do ... View the full answer