The pipe in Figure 2 is used to transport a cold fluid at T1 = 10 C and conviction coefficient (hi) - 200 W/m2K. If the inner diameter of the pipe (Di) = 20 mm, and the outer diameter (Do) = 23 mm, and the hot fluid is at T.;o = 350 K and conviction coefficient (ho) = 20 W/mK. Determine: a) The heat gained by the cold fluid per unit tube length if 10 mm thick insulation layer with thermal conductivity (k)= 0.1 W.m-K is applied. (15 points) b) The heat gained by the cold fluid per unit tube length if the insulation layer was removed (10 points) Hot Fluid @ T. and he Insulation Material Cold Fluid @Tandh 0