Problem 08 094 Water In Pipe Of Food Processing Plant In A Food Processing Plant Hot Liquid Water Is Being Transporte 1 (26.01 KiB) Viewed 36 times
Problem 08 094 Water In Pipe Of Food Processing Plant In A Food Processing Plant Hot Liquid Water Is Being Transporte 2 (26.01 KiB) Viewed 36 times
Problem 08.094 - Water in pipe of food processing plant In a food processing plant, hot liquid water is being transported in a pipe (k-15 W/m-K, D/-2.5 cm, Do=3 cm, and L=10 m). The hot water flowing with a mass flow rate of 1.15Kg/s enters the pipe at 100°C and exits at 60°C. The plant supervisor thinks that since the hot water exits the pipe at 60°C, the pipe's outer surface temperature should be safe from thermal burn hazards. In order to prevent thermal burn upon accidental contact with skin tissue for individuals working in the vicinity of the pipe, the pipe's outer surface temperature should be kept below 45°C. Determine whether or not there is a risk of thermal burn on the pipe's outer surface. Assume the pipe outer surface temperature remains constant. The properties of water at the bulk mean temperature of Tb (7) TeV/2-(100+60)/2=80°C are: Cp 4197 J/kg-K. k-0.670 W/m-K, -0.355 103 kg/m-s, and Pr=2.22. The thermal conductivity of the pipe is given as kpipe = 15 W/m.K. The outer pipe surface temperature is *C.
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