Show transcribed image text (2.8) A consulting firm has designed a steam system for a new process unit at your plant. Superheated steam is delivered to the unit via a 3-in. steel pipe that has an ID of 3.068 in. and an OD of 3.5 in. The steam is at 800 F with a heat-transfer coefficient of 100 Btu/ h-ft2 "E The pipe is covered with a o s in thick layer of Type l insulation having an R-value of i followed by a l in thick layer of Type Il insulation having an R-value of 4. The steam line will be exposed to ambient air at 80°F with a heat-transfer coefficient of 5 Bu/h f "F. Design specifications call for the extemal suface temperature of the insulation to be no greater than 110 F and the manufacturer's literature states that Type I insulation is suitable for temperatures up to 1200 Fwhile TypeII insulation is suitable for temperatures up to 500°F. Your job is to evaluate the consulting firm's design. Proceed as follows (a) Calculate the rate of heat loss from the steam line per foot of pipe length that will actually occur if the consulting firm's design is implemented. (b) Calculate the appropriate temperatures needed to determine whether or not all design and material specifications have (c) State whether or not the consulting firm's design is acceptable and the reason(s) for your conclusion In these calculations, been met. neglect the thermal resistance of the pipe wall, contact resistances, and radiation effects.