Problem 2- Consider a square bar with a side length of 20 cm as shown in the figure. The lower side of the bar is kept at 70 C, and the left side of the bar is insulated. Thermal conductivity of the bar is 1.5 W/m*C. The upper and right surfaces of the bar are in contact with the air at 20°C and the heat transfer coefficient on these surfaces are 1oW/m"C. The bar is in steady state condition. Find the temperatures at points 1 and 2 of the bar. 2. 20cm 75°C

Problem 2- Consider a square bar with a side length of 20 cm as shown in the figure. The lower side of the bar is kept at 70 C, and the left side of the bar is insulated. Thermal conductivity of the bar is 1.5 W/m*C. The upper and right surfaces of the bar are in contact with the air at 20°C and the heat transfer coefficient on these surfaces are 1oW/m"C. The bar is in steady state condition. Find the temperatures at points 1 and 2 of the bar. 2. 20cm 75°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

See similar textbooks

Related questions

Q: Consider a thick spherical wall with insulation at both mk mk the inner and outer walls. The inner…

Q: W concrete on the outside is 8.00cm thick and has a thermal conductivity of 0.500- m.K W wood on the…

A: givenoutside temp= 7.00°cinside temp=22.00°csurface area of wall= 20.0m3

Q: 10 hot rods (L = 5 m and d = 2 cm) are buried in the ground parallel to each other each rod is 10 cm…

A: The given information in the problem is shown in the following attached image:

Q: A cylindrical nuclear fuel rod generates heat at a rate of 71 MW3. It is cooled by fluid at 417 K…

A: Given data:Heat generation rate in fuel rod (q''') = 71 MW/m3Coolant fluid temperature (T∞) = 417…

Q: The heat flux that is applied to the left face of a plane wall is q" = 50 W/m². The wall is of…

Q: Find the total conductive thermal resistance of a 2-m long two-layered cylindrical insulation jacket…

Q: The internal side of a wall is kept at 100o C and its external side which is exposed to the…

A: T1=100o CT2=10o Ch=10 W/m2 oCK=1.3 W/m oCt=0.4 m

Q: A container has a 4 mm thick metal wall and is lined insider with a 1.5 mm-thick plastic. The inside…

A: Heat loss rate: The rate at which heat is transferred from the inside of the container to the…

Q: A 90-amp electric current is flowing through a 6-mm diameter lead wire. The thermal conductivity of…

Q: As seen in the figure, a composite wall consists of three different materials (Material Material-B,…

A: Heat flow remains constant through the three slabs from Fouriers law we know that q= -kdTdXk =…

Q: Consider a large plane wall of thickness L = 0.2 m, thermal conductivity k = 1.2 W/mK, and surface…

A: Given: L=0.2 mk=1.2 W/mKA=15 m2heat generation qg=500 W/m3at x=0, T=60oCTa=20oCh=200 W/m2K To find:…

Q: Consider one-dimensional, steady-state conditions for the plane composite wall shown be- low. The…

Q: Consider a composite wall of overall height H = 30 mm and thickness L = 40 mm. Section A has…

Q: A. The Heat Flow B. Conductive resistance

A: (a) Heat flow = Q=T1-T2L/(kA) T1-T2=∆T= Temperature difference L = thickness of the wall k = thermal…

Q: A rectangular fin with k=43 W/m.C , thickness t=2 cm , length L=14 cm and width W=1 m. The base of…

Q: Consider a multi-layered walls of a storage building (no windows) that is made of three layers as…

A: a) The thermal resistance diagram is given below- T1 = Inside temperature of the wallT2 =Temperature…

Q: Q3: A composite wall consists of an iron plate of thickness L1=3 cm and thermal conductivity of kl…

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

Problem 2- Consider a square bar with a side length of 20 cm as
shown in the figure. The lower side of the bar is kept at 70°C, and
the left side of the bar is insulated. Thermal çonductivity of the bar
is 1.5 W/m°C. The upper and right surfaces of the bar are in contact
with the air at 20°C and the heat transfer coefficient on these
surfaces are 1oW/m*C. The bar is in steady state condition. Find the
2.
temperatures at points 1 and 2 of the bar.
20cm
とこがん

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: INTRODUCTION

VIEW

Step 2: TO DETERMINE THE TEMPERATURE AT POINT 1 & 2 OF THE BAR

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A cylindrical nuclear fuel rod generates heat at a rate of 71 MW3. It is cooled by fluid at 417 K such that the temperature profile in the rod does not change over time. The heat transfer coefficient between the rod and the fluid is 67 kW/m2K. The rod is 7.5 cm in diameter and has a thermal conductivity of 25 W/mK. Starting from the general conduction equation in cylindrical coordinates, what is the maximum temperature in the rod? Give your answer in Kelvin to the nearest integer.
Temperature distribution of a wall is given as T(x) = -100x + 50 and the cold surface is exposed to a convection environment at temperature of 20 °C. If the wall thickness is 10 cm and the conductivity is 1 W/mK what is the convection coefficient between the cold surface and the environment?
Consider a power transistor encapsulated in an aluminum case that is attached at its base to a square aluminum plate of thermal conductivity k= 240W/m.K, thickness L= 6mm, and width W= 20mm. The case is joined to the plate by screws that maintain a contact pressure of 1 bar, and the back surface of the plate transfers heat by natural convection and radiation to ambient air and large surroundings at T∞ =Tsur -25°C. The surface has an emissivity of ε=0.9, and the convection coefficient is h=4 W/m².K. The case is completely enclosed such that heat transfer may be assumed to occur exclusively through the base plate. a) If the air-filled aluminum-to-aluminum interface is characterized by an area of A₁=2×10-4 m² and contact resistance of R+c= 1.375 K/W, what is the maximum allowable power dissipation if the surface temperature of the case, Ts,c, is not to exceed 85°C? S,C' Transistor case Ts. Pelec S,C' Enclosure W Isur Base plate, (k,ε) Interface, Ac Air Th 801 b) How much should the h be…
Q4/A 2-mm-diameter and 10-m-long electric wire is tightly wrapped with a 1-mm-thick plastic cover whose thermal conductivity is k-0.15 W/m "C. Electrical measurements indicate that a current of 10 A passes through the wire and there is a voltage drop of 8 V along the wire. If the insulated wire is exposed to a medium at Ts= 30°C with a heat transfer coefficient of h-24 W/m² C, determine the temperature at the interface of the wire and the plastic cover in steady operation. Also find the critical radius of plastic insulation. [334 T=30°C Electrical wire Insulation bale 10 m