300°C steam flows in a stainless-steel (ss.) pipe with thermal conductivity of50 W/m.K. The pipe has internal diameter (ID) of 40 cm, and outer diameter (OD) of 42 cm.The pipe is placed in another ss. pipe with ID and OD 44 cm and 44.2 cm, respectively. Thegap between the pipes is filled with steel air (use air properties at 160°C from appendix). Theconvection heat transfer coefficient at the inner and the outer surfaces of the pipe ishi = 40 W/m2. K and h2= 15 W/m?. K. Determine the rate of heat loss if the length of the pipe%3!is 10 m. Also determine the temperature at inside, intermediate and outer surfaces. TABLE A-15Properties of air at 1 atm pressureKinematicViscosityv, m²/sPrandtlSpecificHeatThermalThermalDynamicViscosityTemp.T, °CDensityp, kg/m3Conductivityk, W/m-KDiffusivityNumberCp, J/kg-Ka, m?/sH, kg/m-sPr9839663.013 x 10-65.837 x 10-69.319 x 10-61.008 x 10-51.087 x 10-51.169 x 10-51.252 x 10-51.338 x 10-51.382 x 10-51.426 x 10-51.470 x 10-51.516 x 10-50.011714.158 x 10-68.036 x 10-61.252 x 10-51.356 x 10-51.465 x 10-51.578 x 10-51.696 x 10-51.818 x 10-51.880 x 10-51.944 x 10-52.009 x 10-52.074 x 10-5-1502.8668.636 x 10-60.7246-1002.0380.015820.019791.189 x 10-50.72631.474 x 10-51.527 x 10-51.579 x 10-51.630 x 10-51.680 x 10-51.729 x 10-5-501.5829990.74401.5141.4511.39440100210040.020570.021340.7436-300.74251005100610061006-20-100.022110.022880.74081.3411.2920.73870.023640.73621.754 x 10-51.778 x 10-51.802 x 10-551.2690.024010.7350101.2461.2251.20410060.024390.73361510070.024760.73230.025140.0255110071007100710071007201.825 x 10-50.73092.141 x 10-52.208 x 10-52.277 x 10-52.346 x 10-52.416 x 10-52.487 x 10-51.849 x 10-51.872 x 10-51.895 x 10-51.562 x 10-51.608 x 10-51.655 x 10-5251.1841.1641.1450.72960.7282300.02588350.026250.72681.702 x 10-51.750 x 10-51.798 x 10-51.896 x 10-51.995 x 10-5401.1270.026621.918 x 10-50.72551.941 x 10-51.963 x 10-52.008 x 10-52.052 x 10-52.096 x 10-52.139 x 10-5451.1091.0921007100710070.026990.7241500.027350.028080.028810.7228601.0592.632 x 10-50.72020.71772.780 x 10-52.931 x 10-53.086 x 10-53.243 x 10-53.565 x 10-53.898 x 10-54.241 x 10-54.593 x 10-54.954 x 10-55.890 x 10-56.871 x 10-57.892 x 10-5701.02810072.097 x 10-52.201 x 10-52.306 x 10-52.522 x 10-5800.999410080.029530.71540.71320.71110.7073900.97180.94580.897710080.030242.181 x 10-52.264 x 10-52.345 x 10-52.420 x 10-510010090.0309512010110.032350.85420.81480.77882.745 x 10-52.975 x 10-53.212 x 10-53.455 x 10-514010130.033740.70411016101910231600.035110.70142.504 x 10-52.577 x 10-51800.036460.69922000.74590.67460.037790.69741033104410562.760 x 10-52.934 x 10-54.091 x 10-54.765 x 10-55.475 x 10-56.219 x 10-56.997 x 10-57.806 x 10-59.515 x 10-51.133 x 10-41.326 x 10-41.529 x 10-41.741 x 10-42.922 x 10-44.270 x 10-42503000.041040.69460.61580.044180.69353.101 x 10-53.261 x 10-53.415 x 10-53.563 x 10-53.846 x 10-53500.56640.047210.69378.951 x 10-51.004 x 10-41.117 x 10-41.352 x 10-41.598 x 10-41.855 x 10-42.122 x 10-42.398 x 10-43.908 x 10-45.664 x 10-40.050150.052984000.524310690.69484500.488010810.69655006007000.45650.40420.055720.060930.69860.7037109311154.111 x 10-54.362 x 10-54.600 x 10-54.826 x 10-50.362711350.065810.70928000.328911530.070370.7149900100011691184123412640.30080.074650.72060.27720.19900.15530.078680.726015000.095995.817 x 10-50.74780.753920000.111136.630 x 10-5Note. For ideal gases, the properties Cp, k, u, and Pr are independent of pressure. The properties p, v, and a at a pressure P (in atm) other than 1 atm are determinedby multiplying the values of e at the given temperature by Pand by dividing v and a by P.

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