steam flows through a pipe shown in figure 2-35 at an average temperature temperature of T=200C. The inner and outer radii of the pipe are r= 8Cm and r= 8.5Cm, respectively, and the outer surface of the pip is heavily insulated. It the convection heat transfer coefficient on the inner surface of the pipe is h=65., express the boundary on the inner and outer surface of the pipe during transient periods.