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Saturated steam at 150C flows through a 15 cm-O.D., uninsulated steam pipe ( = 0.8). In order to reduce the amount of steam condensed, the
Saturated steam at 150C flows through a 15 cm-O.D., uninsulated steam pipe ( = 0.8). In order to reduce the amount of steam condensed, the pipe is painted with aluminum paint ( = 0.14). Determine the reduction in the amount of steam condensed in kg/day for a 20 m length of pipe. Take the outside convective heat transfer coefficient to be 4 W/m2 K, and surroundings at 20C. Also, calculate the annual savings if the cost of thermal energy is 4 cents/kWh.
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