Need correctly.. A plane wall of thickness 2L = 100 mm with uniform heat generation of 1200 W/m³ and a surface temperature of 30°C has atemperature distribution of T(x) = a (L² - x²)+30°Cwhere a = 10°C/m². The wall is surrounded by ambient air at 20°C. Findthe thermal conductivity, in W/m-K, and the convective heat transfer coefficient, in W/m².K.k =h =iiW/m.KW/m².K

Given DataPlane wall thickness 2L=100 mmUniform heat generation Surface temperature Temperature…

Answered: the thermal conductivity, in W/m-K, and…

Engineering

Mechanical Engineering

the thermal conductivity, in W/m-K, and the convective heat transfer coefficient, in W/m².K.

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 1.50P: A steam pipe 200 mm in diameter passes through a large basement room. The temperature of the pipe...

See similar textbooks

Related questions

Q: Consider the (Figure 1). Figure FR = Submit B Value -1.5 m Determine the magnitude of the…

A: Density of water= 1Mg/m^3Width of gate = 1.1 mFind the magnitude of force on the gate

Q: Question #3: Find the (x,y) coordinates of the centroid of the shaded area between the semi-circle…

Q: A Carnot engine requires 37 KW from the hot source. The engine produces 22 kW of power and the…

A: Power output (Pout) = 22 kWPower input (Pin) = 37 kWTemperature of the cold reservoir (Tc) = 28 °C…

Q: Find the reactions of the beams shown below

Q: A silo for storing grains has a height of 105 feet above the ground and a radius of 1.5 meters…

A: Height of the silo (h): 105 feet = 32 mThe radius of the silo (R): 1.5 metersThe radius of the…

Q: A triangular plate is supported by a ball and socket at point A, a roller at point B, and a rope at…

Q: Create Section AA' and BB' 15.00 15.00 A 5.00 13.75 R2.50 18.75 50.00 Top Front B-18.75- B' R3.75…

Q: 1. Problem 6-21 (14th Ed.) (Use the Method of Joints for this problem) Identify any zero-force…

A: P1=30kNP2=15kNAB=BC=3mBE=4mTo identify any zero-force member in the truss below and determine the…

Q: A pipe that carries water, has section of radius r₁ = 12 cm; it is narrowed, so the section has…

Q: Consider a building whose annual air-conditioning load is estimated to be 40,000 kWh in an area…

Q: Question #1: Determine the shear, axial, and bending moment distributions for the loaded beam shown…

A: Calculate and plot shear axial and bending moment distributions

Q: 4. Given the frame below, determine the forces on member EBD at B and D. 2 ft •D A B 3 ft с AL 4f+…

Q: 7.118 Determine the centroid of the area by letting dA be a horizontal strip of height dy. y

A: The given figure with horizontal strip is shown below.It is required to determine the centroid of…

Q: 5. (b) (c) D d An Aluminium alloy (6061-T6) circular tube (Fig.Q5) used vehicle fittings is under…

Q: A particle moves along the curved path shown. The particle has a speed VA = 12.0 ft sec at time to…

Q: A flywheel of mass 125kg and radius of gyration 150mm is accelerated from rest to a speed of 1180rpm…

Q: A simply supported beam of hollow rectangular cross section is 100mm deep and 60mm wide with a wall…

Q: The circus manager doesn't believe your equations. He draws a diagram showing some possible…

A: The circus manager appears to be dubious about the requirement for a set speed for the acrobat and…

Q: Find the tensile force T1 in cable 1. (Write your result in N) Answer b) Find the tensile force T2…

Q: Draw the shear force, bending moment and normal force diagram for the simple beam loading given…

Q: 4) A constriction in a pipe will cause the velocity to rise and the pressure to fall at section 2 in…

A: Given data :-Pressure at point 1 = P1Pressure at point 2 = P2Venturi Tube is given which is…

Q: Problem 1: Determine the force in each member. State if the members are in tension and in…

Q: Refrigerant R134a enters an expansion valve at 800 kPa as a saturated liquid and exits at 100 kPa.…

A: Given:The initial pressure is .The final pressure is .The initial condition is saturated…

Q: Find the spectral radius of the matrix T; of Jacobi method for the following lineer system:…

Q: 100 mm T=? 45° 300 mm 400 mm O 250 mm The mechanism shown in the figure is in static equilibrium.…

A: In the above diagram, is angle of BC with horizontal and is angle of CD with horizontal.

Q: Beam cross-section: 12 mm 30 mm Determine the Maximum Shear Stress in the beam. A/

Q: A piston cylinder device initially contains 0.03(m)^3 of liquid water at 25 °C and 300 kPa. Heat is…

A: Initial volume,V1=0.03 m3Initial temperature,T1=250CInitial pressure ,P1=300 kPaConstant pressure…

Q: What are the key factors that influence the compressible flow behavior in a gas turbine engine, and…

A: This question is based on the concept of Engine performance.

Q: n this question, you will calculate the second moment of area for a 4 ✕ 6 piece of lumber about the…

A: Let Ixx be the second moment of the area about the x-x axis.Let Iyy be the second moment of the area…

Q: For the clevis connection shown, the shear stress in the 5/16-in.-diameter bolt must be limited to…

Q: 5-123. The shaft is used to transmit 30 hp while turning at 600 rpm. Determine the maximum shear…

Q: A test of 6 units of a product was continued until all units failed. The failure times were 5, 12,…

A: Total number of failures = 6The failure times were, 5,12,22,34,35,45 hours

Q: Rigid beam AB is supported by three bolts at A and a pin at B. The bolts at A are in double shear…

A: Given:The diameter is .The length is .The shear stress is .Consider free body diagram:

Q: the effect of scratching the of the iron sheet surface with different objects

A: Effect of scratching the of the iron sheet surface with different objects.

Q: Below is the arrangement for a gear train. A motor delivers 200-hp at 540-RPM to the input gear A.…

Q: Determine the ongular accelerations of the bors, if the system is released from the figure shown.…

A: Given:To find:Angular velocity of the bars

Q: Question a) The 10-kg block has a speed of 4 m/s when the force of F = (8t²) N is applied (Figure…

Q: Answer: Pmax i kN

Q: An airplane has a mass of 190839 kg and carries 395 passengers having an average mass of 63 kg each.…

A: Given Data

Q: 230-kg uniform snart is turned through angle as shown here. End A is walls suppor supported by the…

Q: Two boats leave the pier P at the same time and travel in the directions shown in (Figure 1). VA =…

A: The velocity of A = 36(ft/s)The velocity of B = 30(ft/s) Find the relative velocity of A to B

Q: 100 mm 6 in. 200 mm 140 mm 140 mm 2. Locate the centroid (x, y) for the angle's cross sectional…

A: A2 = A2 = A2 = 15707.96 A1 = A1 = 40292.04-> Centroiet of Rectangular point. X1 = 100…

Q: Discuss the concept of vibration absorber with example.

A: This question is based on the concept of vibration absorber.

Q: A 3-phase, 318-V, 50-Hz, 35 HP, 6-pole, Y-connected induction motor is operating with a line current…

Q: Note: Include all necessary free-body diagrams. Q.1) (a) Find the support reactions of the beam…

Q: (d) If petroleum is a non-renewable resource, briefly explain how it can be prevented from…

A: to explain the following (d) If petroleum is a non-renewable resource, briefly explain how it can be…

Q: Which failure theory would be appropriate to solve the following problem: A rotating shaft is…

A: Given:A rotating shaft is supported by bearings at each end. The shaft supports a single load in the…

Q: Below is the arrangement for a gear train. A motor delivers 200-hp at 540-RPM to the input gear A.…

A: The motor horse power, P = 200 hpThe speed of gear A, NA = q = 540 rpm

Q: The velocity of a particle moving in the x-y plane is given by (5.92i + 4.07j) m/s at time t = 5.92…

A: Given:The velocity of a particle is at .The acceleration of a particle is at .Formula used:The…

Q: A force P and a force Q, applied via a nut, are acting on the arm attached to the end of a shaft…

A: The strain reading on the gauge 1 = 630*10-6 The strain reading on the gauge 2 = 630*10-6 The strain…

Concept explainers

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.

Question

100%

Need correctly..

A plane wall of thickness 2L = 100 mm with uniform heat generation of 1200 W/m³ and a surface temperature of 30°C has a
temperature distribution of T(x) = a (L² - x²)+30°Cwhere a = 10°C/m². The wall is surrounded by ambient air at 20°C. Find
the thermal conductivity, in W/m-K, and the convective heat transfer coefficient, in W/m².K.
k =
h =
i
i
W/m.K
W/m².K

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Given Data and Find Out

VIEW

Step 2: The thermal conductivity of the material

VIEW

Step 3: The convective heat transfer coefficient

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 9 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

1.10 A heat flux meter at the outer (cold) wall of a concrete building indicates that the heat loss through a wall of 10-cm thickness is . If a thermocouple at the inner surface of the wall indicates a temperature of 22°C while another at the outer surface shows 6°C, calculate the thermal conductivity of the concrete and compare your result with the value in Appendix 2, Table 11.
2.38 The addition of aluminum fins has been suggested to increase the rate of heat dissipation from one side of an electronic device 1 m wide and 1 m tall. The fins are to be rectangular in cross section, 2.5 cm long and 0.25 cm thick, as shown in the figure. There are to be 100 fins per meter. The convection heat transfer coefficient, both for the wall and the fins, is estimated to be K. With this information determine the percent increase in the rate of heat transfer of the finned wall compared to the bare wall.
An electronic device that internally generates 600 mW of heat has a maximum permissible operating temperature of 70C. It is to be cooled in 25C air by attaching aluminum fins with a total surface area of 12cm2. The convection heat transfer coefficient between the fins and the air is 20W/m2K. Estimate the operating temperature when the fins are attached in such a way that (a) there is a contact resistance of approximately 50 K/W between the surface of the device and the fin array and (b) there is no contact resistance (in this case, the construction of the device is more expensive). Comment on the design options.
A steam pipe 200 mm in diameter passes through a large basement room. The temperature of the pipe wall is 500C, while that of the ambient air in the room is 20C. Determine the heat transfer rate by convection and radiation per unit length of steam pipe if the emissivity of the pipe surface is 0.8 and the natural convection heat transfer coefficient has been determined to be 10 W/m2K.
2.29 In a cylindrical fuel rod of a nuclear reactor, heat is generated internally according to the equation where = local rate of heat generation per unit volume at r = outside radius = rate of heat generation per unit volume at the centerline Calculate the temperature drop from the centerline to the surface for a 2.5-cm-diameter rod having a thermal conductivity of if the rate of heat removal from its surface is 1.6 .
The interior wall of a large, commercial walk-in type meat freezer is covered under normal operating conditions with a 2-cm thick layer of ice. One day, a power outage cuts electricity to the refrigeration system of the freezer. Estimate the time required to melt this layer of ice if it has a mass density of 700kg/m3 and a latent heat of fusion of 334 kJ/kg. Consider the air temperature inside the freezer to be 20C with a heat transfer coefficient of 2W/m2K for convection from the freezer surface to air, and clearly state the assumptions made in your calculations.
yo lo:ll O %AV L. مرتضی نشط الآن Q5: The piston cylinder device (radius=10 cm) contains a liquid with a pressure 100 kpa and temperature of 20 ° C and has a liquid convection heat coefficient =93 WmK. Connect its fixed side to a cubic piece of aluminum (side length 15 cm) with a thermal conductivity coefficient of aluminum = 239 W mK. At the bottom of the aluminum piece there is a heat source with a temperature of 150 ° C, noting that the heat source is located in a vacuum chamber. Radiation thermal resistance = 3.17 K/W. Calculate the change in piston height during I sec. if you know that there is no change in the internal energy of the piston cylinder device. Note IK Watt 1KJ/s : Aa
Consider a 40 mmx40 mmx 2 mm thick heat spreader with thermal conductivity of 160 W/m-°C. If the temperature difference across its thickness is 2°C, what is the heat transfer rate through it?
A metal cube of 0.1 m sides is being cooled down uniformly from 300°C to 30°C by placing it in cold water at 10°C. The convection coefficient of water around the cube is 40 W/m².K. The properties of the cube material are as follows - thermal conductivity: 137 W/m-K, density: 1600 kg/m³; specific heat: 800 J/kg.K. Neglect radiation. Find the time required for coo cooling. 1426-2
Convection - Heat Transfer Coefficient (HTC) (1) The temperature of inner surface of insulation wall is t,=100°C, while the outer surface releases the heat by convection to surroundings air with temperature of -20°C. The thickness of the insulating layer is 5 cm and its thermal conductivity of 0,05 W/(m-K). What is the value of heat transfer coefficient on the outside this wall if its surface temperature t, is of 0°C.
Q₁: Consider a large plane wall of thickness L = 0.4 m, thermal conductivity k-2.3 W/m °C, and surface area A= 20 m². The left side of the wall at x= 0 is subjected of T1 = 80°C. while the right side losses heated by convection to the surrounding air at T-15 °C with a heat transfer coefficient of h=24 W/m² °C. Assuming constant thermal conductivity and no heat generation in the wall, (a) express the differential equation and the boundary conditions for steady one-dimensional heat conduction through the wall, (b) obtain a relation for the variation of temperature in the wall by solving the differential equation, and (c) evaluate the rate of heat transfer through the wall Ans: (c) 6030 W
Problems within the wall is T(x) = a(L- ) +b where a = 10°C/m2 and b 30°C, what is the thermal con- ductivity of the wall? What is the value of the convec- tion heat transfer coefficient, h? 2.11 Consider steady-state conditions for one-dimensional conduction in a plane wall having a thermal conductiv- ity k 50 W/m K and a thickness L = 0.25 m, with no internal heat generation. 2. T2 T1 L Determine the heat flux and the unknown quantity for each case and sketch the temperature distribution, indi- cating the direction of the heat flux. 2 Case TC) dTldx (K/m) T2(°C) 1 50 -20 2 -30 - 10 3 70 160 4 40 -80 5 30 200