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A 30 m long pipe with an outside diameter of 75 mm is used to deliver...

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Physics

A 30 m long pipe with an outside diameter of 75 mm isused to deliver steam at a rate of 2000 kg / hour. The vaporpressure is 198.53 kPa entering the pipe with a quality of 98%. Thepipe needs to be given insulation with thermal conductivity of 0.2W / (m K) so that the vapor quality only slightly decreases to 95%.The outer surface temperature of the insulation is assumed to be 25° C. Ignore the resistance conductive from the pipe material andconsidered no pressure drop in the pipe. a. Determine the enthalpyof incoming steam = kJ / kg.
b. Determine the enthalpy of steam coming out = kJ / kg.
c. Determine the change / heat loss of steam along the flow =watt.
d. Determine the minimum insulation thickness required = cm.

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