A rectangular slab with surface area 2m? and with thickness 20mm is exposed to hot gas on one side. 30 W of heat is transferred from the hot gasto the slab surface while the temperature at the opposite side is measured as 85°C. Which of the following boundary conditions is true for 1Dunder steady-state condition:O adT- K30W/m2; T1-85°CdxOb.hA(AT)= 30W/ m² ; T1=85°Ch(AT)= 15W/ m² ; T1=85°COd q=30W; T1=85°C;

Answered: ady-state condition dT K = 30W/m2;…

Engineering

Mechanical Engineering

ady-state condition dT K = 30W/m2; T1=85°C %3D dx A(AT)= 30W/ m² ; T1=85°C (AT)= 15W/ m²; T=85°C %=D30W; T1=85°C;

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.16P: 3.16 A large, 2.54-cm.-thick copper plate is placed between two air streams. The heat transfer...

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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

A rectangular slab with surface area 2m? and with thickness 20mm is exposed to hot gas on one side. 30 W of heat is transferred from the hot gas
to the slab surface while the temperature at the opposite side is measured as 85°C. Which of the following boundary conditions is true for 1D
under steady-state condition:
O a
dT
- K
30W/m2; T1-85°C
dx
Ob.
hA(AT)= 30W/ m² ; T1=85°C
h(AT)= 15W/ m² ; T1=85°C
Od q=30W; T1=85°C;

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