Steam at 320°C flows in a stainless steel pipe, whose innerand outer diameters are D; = 5 cm and D.- 5.5 cm. The pipeis insulated with insulating material – glass fibe (organicbonded) at a thickness of 3 cm. Heat is lost to surroundingsat 5°C via convection and radiation with a combined heattransfer coefficient of h, = 18 W/m²K. If the heat transfercoefficient inside the pipe is h, = 60 W/m²K, determine:a) the heat loss from the steam per unit length of pipeb) temperature drop across the pipe thickness

As the material given is glass fiber ( organic bonded ), the value of K is 0.036 W/m C

Steam at 320°C flows in a stainless steel pipe, whose inne and outer diameters are D; = 5 cm and D.-5.5 cm. The pip is insulated with insulating material – glass fibe (organic bonded) at a thickness of 3 cm. Heat is lost to surroundin at 5°C via convection and radiation with a combined heat transfer coefficient of h, = 18 W/m²K. If the heat transfer coefficient inside the pipe is h, = 60 W/m²K, determine: %3D a) the heat loss from the steam per unit length of pipe b) temperature drop across the pipe thickness

Steam at 320°C flows in a stainless steel pipe, whose inne and outer diameters are D; = 5 cm and D.-5.5 cm. The pip is insulated with insulating material – glass fibe (organic bonded) at a thickness of 3 cm. Heat is lost to surroundin at 5°C via convection and radiation with a combined heat transfer coefficient of h, = 18 W/m²K. If the heat transfer coefficient inside the pipe is h, = 60 W/m²K, determine: %3D a) the heat loss from the steam per unit length of pipe b) temperature drop across the pipe thickness

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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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

Steam at 320°C flows in a stainless steel pipe, whose inner
and outer diameters are D; = 5 cm and D.- 5.5 cm. The pipe
is insulated with insulating material – glass fibe (organic
bonded) at a thickness of 3 cm. Heat is lost to surroundings
at 5°C via convection and radiation with a combined heat
transfer coefficient of h, = 18 W/m²K. If the heat transfer
coefficient inside the pipe is h, = 60 W/m²K, determine:
a) the heat loss from the steam per unit length of pipe
b) temperature drop across the pipe thickness

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