Saturated steam at 3 atm will flow through a 3 in. Schedule 80 steel pipe. In order to decrease the heat losses to the surrounding air (at 20 oC) the pipe will be insulated. There are two types of insulating materials available, each with a thickness of 2.5 cm. Thermal conductivity of insulator A is 0.04 W/m.K and that of insulator B is 0.20 W/m.K. Both insulators will be used, in order to have the least heat loss. Which insulator should be covered outside? Assume that convective heat transfer coefficient between the insulated pipe and air is 15 W/m2K.
Saturated steam at 3 atm will flow through a 3 in. Schedule 80 steel pipe. In order to decrease the heat losses to the surrounding air (at 20 oC) the pipe will be insulated. There are two types of insulating materials available, each with a thickness of 2.5 cm. Thermal conductivity of insulator A is 0.04 W/m.K and that of insulator B is 0.20 W/m.K. Both insulators will be used, in order to have the least heat loss. Which insulator should be covered outside? Assume that convective heat transfer coefficient between the insulated pipe and air is 15 W/m2K.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Saturated steam at 3 atm will flow through a 3 in. Schedule 80 steel pipe. In order to
decrease the heat losses to the surrounding air (at 20 oC) the pipe will be insulated. There are two
types of insulating materials available, each with a thickness of 2.5 cm. Thermal conductivity of
insulator A is 0.04 W/m.K and that of insulator B is 0.20 W/m.K. Both insulators will be used, in
order to have the least heat loss. Which insulator should be covered outside? Assume that
convective heat transfer coefficient between the insulated pipe and air is 15 W/m2K.
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