Engine oil flows through a 25-mm-diameter tube at a rate of 0.5 kg/s. The oil enters the tube at a temperature of 25°C, while the tube surface temperature is maintained at 100°C. Determine the oil outlet temperature for a 5-m and for a 100-m long tube. For each case, compare the arithmetic mean difference temperature to the log mean temperature difference Check number. L=5m, Tm,ー28.4°C, ΔTlm=73.3°C ΔTam=73.3°C; Check number. L-I00m. Tm,0~ 44.8°C, ΔTĮm、64.5°C ΔTam~65. ΰC Hint Since Tma is unknown, oil properties are suggested to be evaluated at T 330K This will be an intemal flow where it is hydro-dynamically fully developed but thermally developing due to Pr1 Properties: Oil (330 K): op-2035 J/kg-K -0.0836 Ns/n2, k-0.1 Wim-K. Pr-1205