Steam flows through a copper pipe (kc=150Wm∙K⁄) that has an inner diameter of 19 mm and an outer diameter of 21 mm. The convection coefficient between the 200°C steam and the pipe is 200Wm2∙K⁄. The pipe is wrapped with insulation (ki=0.03Wm∙K⁄) so that the outer surface of the insulation is safe to touch. If the inner surface of the pipe is at 180°C: a) What is the temperature of the outer surface of the pipe for unit length of the pipe (or the inner surface of the insulation)? b) What is the thickness of the insulation so that the temperature is 40°C at the outer surface of the insulation? (Note: Assume negligible contact resistance)

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

cutt.ly/4zZs6GM

One of the benefits of working with chlorinated polyvinyl chloride (CPVC) pipe is that it can be cut with a variety of different tools that don’t require any electricity or heat. However, different cutting methods are preferred over others, depending on the application.

When cutting CPVC pipe, it is important to make a square, flat cut. An uneven cut limits the bonding area and weakens the fitting.

To help you make the best possible cut, we’ve put together the following dos and don’ts when cutting CPVC pipe in different situations.