: The temperature distribution across a wall 0.3 m thick at a certain instant of time is T(x)=a+bx+cx², where T in degree Celsius and x is in meters, a 200 °C, b=-200 °C/m, and c-30 °C/m². The wall has a thermal has a thermal conductivity of 1.25 W/m.K. (a) On a unit surface area basis, determine the rate of heat transfer into and out of the wall and the rate of change of energy stored by the wall. (b) If the cold surface is exposed to a fluid at 100 °C, what is the convection coefficient?

: The temperature distribution across a wall 0.3 m thick at a certain instant of time is T(x)=a+bx+cx², where T in degree Celsius and x is in meters, a 200 °C, b=-200 °C/m, and c-30 °C/m². The wall has a thermal has a thermal conductivity of 1.25 W/m.K. (a) On a unit surface area basis, determine the rate of heat transfer into and out of the wall and the rate of change of energy stored by the wall. (b) If the cold surface is exposed to a fluid at 100 °C, what is the convection coefficient?

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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.70P: The thermal conductivity of fibreglass insulation at 67F is 0.02 Btu/h ft F. What is its value in SI...

See similar textbooks

Related questions

Q: Write note on Solution By Graphical Method.

A: The graphical method is a way to solve systems of linear equations in two variables by plotting the…

Q: Example: A dam holds back the water in a lake. If the dam has a small hole 1.4 meters below the…

Q: What is a microcontroller? 1. General purpose device that can be programmed to carry out a finite…

A: Given question is related to electromechanical devices and controllers.

Q: 嗎! 可 CCC

A: The image depicts an ancient Egyptian scene, likely illustrating some form of craft or technological…

Q: not read the answer. Is there a way to upload it in ano

A: Navier-stokes equation (momentum and continuity equations)

Q: rate you with “LIKE/UPVOTE," if it is COMPLETE STEP-BY-STEP SOLUTION. If it is INCOMPLETE…

A: Given Data : For triangular section : Load intensity(h)= 6 KN/m Distance upon which load is…

Q: Angry Mike is on the run. He finally couldn't outsmart his brother sheriff Tommy Boy Hopkins any…

Q: I need problems 4, 5, and 6 answered.

A: (4) In engineering drawing SR is denoted for radius of sphere. So the answer will be,.562” spherical…

Q: Propose an idea for a new digital pen product What will your digital pen idea look like? Please…

A: In addition to recording your handwritten notes in class, a smart pen is a pen gadget that can…

Q: Using a cutting device, sheets of paper are to be cut to size. By pressing two pushbutton switches,…

A: This can be done using a pneumatic control system.

Q: Which of the following statement is NOT correct? Fluid Mechanics is the study of the behaviour of…

A: Mechanics is a branch of science which deals with the forces and its effects like deformation,…

Q: The report is divided into six main components, each of which contributes to a thorough…

A: The report is a technical document about improving air quality and safety in sports halls.It has six…

Q: Look at the flow chart showing the steps of the design process. Then read the list of steps for…

Q: Protractors - A protractor is used to measure the angle two faces of a component. The instrument…

A: Protractors A protractor is used to measure the angle two faces of a component. The instrument…

Q: Determine the moment about point A of the forces shown. Note: 500 lb is perpendicular to the…

A: Given data as per question The perpendicular force applied =1200 lb The horizontal force applied…

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

I need answer within 20 minutes please please with my best wishes

: The temperature distribution across a wall 0.3 m thick at a certain
instant of time is T(x)=a+bx+cx², where T in degree Celsius and x is in
meters, a 200 °C, b--200 °C/m, and c-30 °C/m². The wall has a
thermal has a thermal conductivity of 1.25 W/m.K.
(a) On a unit surface area basis, determine the rate of heat transfer into and
out of the wall and the rate of change of energy stored by the wall.
(b) If the cold surface is exposed to a fluid at 100 °C, what is the
convection coefficient?

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

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 3 images

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

i need the answer quickly
Answer correctly and quickly as possible please.
Consider a copper plate that has dimensions of 3 cm x 3 cm x 7 cm (length, width, and thickness, respectively). As shown in the following figure, the copper plate is exposed to a thermal energy source that puts out 126 J every second. The density of copper is 8,900 kg/m³. Assume there is no heat loss to the surrounding block. 126 J Copper Insulation Ⓡ What is the specific heat of copper (in J/(kg K))? J/(kg. K) What is the mass of the copper plate (in kg)? kg How much energy (in J) will be consumed during 11 seconds? J Determine the temperature rise (in K) in the plate after 11 seconds.
A wall made of wood is 4.00 cm thick and has an area of 48.0 m². If the temperature inside is 25 °C and the temperature on the outside is 14 C, then at what rate is thermal energy transported through the wall by conduction? The thermal conductivity of wood is 0.080 Js ¹m¹(c)¹ 'n Muur is gemaak van hout wat 4.00 cm dik is en met 'n oppervlakte van 48.0 m². Wat is die tempo van energie oordrag as gevolg van geleiding deur die muur indien die binne temperatuur is 25 °C en die buite temperatuur 14 °C is? Die termiese geleidingskonstante van hout is 0.080 Jsm¹(C)1. Select one: a 82 W O b. 1056 W 690 W 1100 W O e. 2200 W O.C. O d. A
1- Consider steady- state conduction for one-dimensional conduction in a plane wall having a thermal conductivity k=50 W/m.K and a thickness L-0.25 m, with no internal heat generation. Determine the heat flux and the unknown quantity (blanks) for each case and sketch the temperature distribution, indicating the direction of heat flux. Case TI(°C) 50 T2(°C) -20 dT/dx(K/m) 1 -30 -10 70 160 40 -80 5 30 200 234n
1
Look at the picture and thank you
= Consider a large plane wall of thickness L=0.3 m, thermal conductivity k = 2.5 W/m.K, and surface area A = 12 m². The left side of the wall at x=0 is subjected to a net heat flux of ɖo = 700 W/m² while the temperature at that surface is measured to be T₁ = 80°C. Assuming constant thermal conductivity and no heat generation in the wall, (a) express the differential equation and the boundary equations for steady one- dimensional heat conduction through the wall, (b) obtain a relation for the variation of the temperature in the wall by solving the differential equation, and (c) evaluate the temperature of the right surface of the wall at x=L. Ti до L X
4x F2 # 3 E 4, F3 54 $ R F4 Ac = 1m² ▬ H DII x= 1 m (4) Consider a wall (as shown above) of thickness L-1 m and thermal conductivity k-1 W/m-K. The left (x=0) and the right (x=1 m) surfaces of the wall are subject to convection with a convectional heat transfer coefficient h= 1 W/m²K and an ambient temperature T. 1 K. There is no heat generation inside the wall. You may assume 1-D heat transfer, steady state condition, and neglect any thermal contact resistance. Find T(x). % To,1 = 1 K h₁ = 1 W/m²K 5 Q Search F5 T T₁ A 6 x=0 F6 à = 0 W/m³ k= 1W/mK L=1m Y 994 F7 & 7 T₂ U Ton2 = 1 K h₂ = 1 W/m²K1 PrtScn F8 Page of 7 ) 0 PgUp F11 P
A plane wall is insulated on its left side (? = 0). The wall generates energy uniformly at arate of ?̇ [W m 3⁄ ] and has thermal conductivity ?. On its right side (? = ?), the wall is exposedto a fluid at temperature ?" with convection coefficient ℎ.a) Draw a schematic of this plane wall. Make the schematic large enough that you cansketch the temperature profile within the wall after solving for it in later steps.b) Write out the full form of the Heat Diffusion Equation (HDE) in the appropriatecoordinate system for this physical scenario. Simplify the HDE and write out theappropriate boundary conditions in their general form (e.g., ?| #$% = ?& ).c) Derive an expression for the steady-state temperature distribution ?(?) within thewall. You may start from the general solution provided in Appendix C of the Bergmantextbook; or you may derive the solution directly from the differential equation andthe boundary conditions. Annotate your schematic by sketching the temperatureprofile…
1. Temperatures are measured at the left-hand face and at a point 4 cm from the left-hand face of the planar wall shown in the figure below. These temperatures are T₁ = 45.3 °C and T* = 21.2 °C. The heat flow through the planar wall is steady and one dimensional. What is the value of T2 at the right-hand surface of the wall? TI T* 4 cm 10 cm T2
i need the answer quickly