Two industrial steel pipes are carrying 200 °C steam. The internal diameter of both pipes are 2.0 cm and both are insulated with 2.5 cm thicker layer of polyurethane insulation on the outside. The wall thickness of the first pipe is 0.5 cm while the wall of the other pipe is 2.0 cm thick. The temperature at the outside surface of the insulation is kept constant at 50 °C. Thermal conductivities of steel and polyurethane insulation are 50 W/mK and 0.15 w/mK, respectively. Calculate the temperature at the interface between the steel and the insulation in case of the thicker pipe. 197.2 °C 198.2 °C 199.2 °C 200 °C
Two industrial steel pipes are carrying 200 °C steam. The internal diameter of both pipes are 2.0 cm and both are insulated with 2.5 cm thicker layer of polyurethane insulation on the outside. The wall thickness of the first pipe is 0.5 cm while the wall of the other pipe is 2.0 cm thick. The temperature at the outside surface of the insulation is kept constant at 50 °C. Thermal conductivities of steel and polyurethane insulation are 50 W/mK and 0.15 w/mK, respectively. Calculate the temperature at the interface between the steel and the insulation in case of the thicker pipe. 197.2 °C 198.2 °C 199.2 °C 200 °C
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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Transcribed Image Text:Two industrial steel pipes are carrying 200 °C steam. The internal diameter of both
pipes are 2.0 cm and both are insulated with 2.5 cm thicker layer of polyurethane
insulation on the outside. The wall thickness of the first pipe is 0.5 cm while the wall
of the other pipe is 2.0 cm thick. The temperature at the outside surface of the
insulation is kept constant at 50 °C. Thermal conductivities of steel and
polyurethane insulation are 50 W/mK and 0.15 w/mK, respectively.
Calculate the temperature at the interface between the steel and the insulation
in case of the thicker pipe.
O 197.2 °C
198.2 °C
199.2 °C
200 °C
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