3.26 A composite wall separates combustion gases at 2600°C from a liquid coolant at 100°C, with gas- and liquid-side convection coefficients of 50 and 1000 W/m².K. The wall is composed of a 10-mm-thick layer of beryllium oxide on the gas side and a 20-mm-thick slab of stainless steel (AISI 304) on the liquid side. The contact resistance between the oxide and the steel is 0.05 m² K/W. What is the heat loss per unit surface area of the composite? Sketch the temperature distribu- tion from the gas to the liquid.

3.26 A composite wall separates combustion gases at 2600°C from a liquid coolant at 100°C, with gas- and liquid-side convection coefficients of 50 and 1000 W/m².K. The wall is composed of a 10-mm-thick layer of beryllium oxide on the gas side and a 20-mm-thick slab of stainless steel (AISI 304) on the liquid side. The contact resistance between the oxide and the steel is 0.05 m² K/W. What is the heat loss per unit surface area of the composite? Sketch the temperature distribu- tion from the gas to the liquid.

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 1.68P

See similar textbooks

Related questions

Q: Consider one wing aileron w/ rectangular planform. This aileron w/ constant chord has a span of ó ft…

Q: (A) For the Igiven oaded bar, determine the resultant of all its applied loads and illustrate in a…

Q: EXAMPLE 4-3 Isothermal Compression of an Ideal Gas A piston-cylinder device initially contains 0.4…

Q: A heavy-duty shock absorber is compressed 2 cm from its equilibrium position by a mass of 400 kg.…

Q: Q. 2 Find the position of centroid with respect to given X and Y axis of shaded portion in the…

A: we know thatformula to calculate centeroid about x axis isx=∑AX∑Aformula to calculate centeroid…

Q: X=0 v Boundary condition on inside surface cle one below -k uation Inside +k dx * (27) ₂0 x-inside…

Q: A smooth, homogeneous sphere is held ar rest by the two inclines as shown. Determine the reactions…

Q: Ay 2h Ar - T. – 2 k h A m, n Th (27-1 + Tm,n+1 + Tm,a-1) + - - 1, n k

Q: for q1) B at the point : frictional force at A is...the frictional force in the vertical direction…

A: Yes, you are right. The friction force in the vertical direction at point A has not been included in…

Q: 3m W2 Ww1Wi 12m Ww2 Ww3 7m 3m 3m 12m 4m A concrete dam retaining water is shown. If the specific…

Q: 3.14. Find the vorticity in polar coordinates for the following velocity com- ponents

Q: You are driving down a highway on a sunny 7°C, fall day. The sun heats the 1m², flat, steel hood of…

A: Given:The temperature of the sunny day, The area of the flat, steel hood of the car, The temperature…

Q: 20 2P A: find the value and the position of max. B deflection. 3L 4. 3m P=10 KN, L=4m

A: To determine the value and position of maximum deflection.

Q: If V is 20 m/s, what is H? (Note: Hg is mercury) AD DO NOT L NOUPLOAD TO po NOT DecloT UPLOAL UPLO…

Q: The ball ejected horizontally from the tube with a speed of 8 m/s. Find the equation of the path, y…

Q: nclude assumptions

A: Given-Information:- Maximum temperature, Tmax = 140°FSide of furnace = 8 ft Inside Temperature =…

Q: Wet coal amounting to 1000 ton/day is dried in an air dryer. The wet coal feed enters with 12% by…

Q: Determine the force P required to maintain the 195-kg engine in the position for which 0 = 29°. The…

Q: For the vertical wall shown on the left, the oil thickness is assumed to be 0.2 m and its SG is 0.8.…

A: (a) To draw: The pressure diagram. Given: The density of water 1000 kgm2. Thickness of oil is 0.2 m.…

Q: A young man, 22 years old, graduated from college and got his first job. He wants to have a…

Q: 9.7 Consider a large vertical plate with a uniform surface temperature of 130°C suspended in…

Q: A reinforced concrete column 400 mm in diameter is designed to carry an axial compressive load of…

A: Given: Diameter of the reinforced concrete column→D=400 mm So total area of the…

Q: solve both, show assumptions

A: Answers are given below:Explanation:

Q: The gate (3 m x 3 m) is pinned at A and rests atop the concrete surface at B. Given the information…

A: Given: The area of the gate, A = 3x3 = 9 m^2 The specific weight of the water, ʏ = 9790 N/m^3 The…

Q: (a)A cycle with regeneration is the stirling cycle; it is composed of two isothermal processes and…

Q: The car passes point A with a speed of 25 m/s after which its speed is defined by with a speed of 25…

A: Find the magnitude of acceleration.

Q: 6. As shown in the figure, a hole is to be punched out of a plate having an ultimate shearing stress…

A: Given:Ultimate shear stress of plate=300 MPaFor Part a: compressive stress in punch=400 MPahole…

Q: Find the limit using L'Hopital's Rule

A: limx→∞xe1/x-2x=limx→∞e1/x-21x 0/0 indeterminate form Using L'Hopital's Rule…

Q: Compute the magnitude of the moment Mo of the 345-lb force about the axis 0-O. Assume F = 345 lb, d…

A: Given data as per question Force =345 lb d=16 in H =11.6 in h =6 in…

Q: Thevenin theorem?

A: Thevenin's Theorem states that “Any linear circuit containing several voltages and resistances…

Q: The steel link AB of the wire cutter has a dimensions of 3mmx 10mm, and modulus of elasticity of…

Q: ◊ - W, = ΔΗ + Δέκ + Δέρ

A: To Find : When will be the Ws equal to Q Given The equation is Q-Ws=∆H+∆Ek+∆Ep

Q: A tiny particle of mass 4 x 10°4 kg (so fdrag = bv) has a drag coefficient, b = 3.3 x 10² kg/sec.…

A: Given data mass of particle (m) = 4*10-4 kg drag coefficient (b) = 3.3*10-2 kg /sec To determine…

Q: mercury Water flows at a flow rate of Q=5 lt/s from the system with diameters of d₁=60 mm and d₂=40…

A: This question is based on the concept of Bernoulli's equation. The assumptions are- Steady Flow: The…

Q: The equation for drag force is given by: 1 = drag force Cp = drag coefficient p = density A = cross…

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

100%

please include assumptions

3.26 A composite wall separates combustion gases at
2600°C from a liquid coolant at 100°C, with gas- and
liquid-side convection coefficients of 50 and 1000
W/m².K. The wall is composed of a 10-mm-thick layer
of beryllium oxide on the gas side and a 20-mm-thick
slab of stainless steel (AISI 304) on the liquid side. The
contact resistance between the oxide and the steel is
0.05 m² K/W. What is the heat loss per unit surface
area of the composite? Sketch the temperature distribu-
tion from the gas to the liquid.

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

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 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. A composite furnace wall is made up of a 12-in. lining of magnesite refractory brick, a 5-in.thickness of 85% magnesia, and a steel casing 0.10-in. thick. Flue gas temperature is 2200 F andthe boiler room is at 80 F. Gas side film coefficient is 15 Btu/hr-sq.ft-F and air side is 4.0.Determine:a. The thermal current Q/Ab. Interface temperaturesc. Effect on thermal current and inside refractory wall temperature if the magnesia insulation weredoubled.
Two inches of urethane foam will reduce heat loss close to 1000% when applied to a 2-inch diameter uninsulated steel pipe. Assume the pipe wall thickness is 0.25-inches, the pipe interior convective heat loss (hi) is 500 BTU/hr-ft2-oF, and the pipe outside convective heat loss ho 20 BTU/hr-ft2-oF, k steel is 25 BTU/hr-ft-oF, and k insulaton is 0.023 BTU/hr-ft-oF. (hint - calculate heat loss with and without insulation.
5.8 The heat transfer coefficient for air flowing over a sphere is to be determined by observing the temperature-time history of a sphere fabricated from pure copper. The sphere, which is 12.7 mm in diameter, is at 66°C before it is inserted into an airstream having a temperature of 27°C. A thermocouple on the outer surface of the sphere indicates 55°C 69 s after the sphere is inserted into the airstream. Assume and then justify that the sphere behaves as a spacewise isothermal object and calculate the heat transfer coefficient.
Answer correctly and quickly as possible please. Please help me with my last three questions, I do not have any ask an expert left. Please.
3.8 Determine (i) the pressure drop, and (ii) the convective heat transfer coefficient from hot air ( Tin = 500 K, Pin = 101.3 kPa, m sphere = 3.8 cm, o = 0.45, T init = 300 K, c sphere = 0.8 kJ/kgK, k sphere = 1.05 W/mK). = 3.5 kg/s) to a cold-packed bed of spheres (L vessel = 6.0 m, D vessel = 1.50 m, D Answer. (a) Ap = 9.46 kPa ; (b) h = 115
VI.2 A coolant is transported in a pipe with external wall temperature of -30 °C and with outer diameter of 10 cm. The tube is thermally isolated by two layers: 1) an internal layer of foamed polypropylene with thermal conductivity of 0.08 W.m.K and thickness of 10 cm, and 2) an external felt layer with thermal conductivity of 0.05 W.m.K and thickness of 5 cm. Temperature of the outer surface is 25 °C. Calculate the heat flow from the surroundings to the tube with length of 100 m. What is the temperature on the boundary between polypropylene and felt layers? Result: The heat flow from the surroundings is approx. 1.77 kW. Temperature between layers of isolation is 8.8 °C.
The fuel assembly shown in the left figure consists of periodic arrays of annular bare fuel rods, which are cooled by passing water through the center of the rods as well as over the outer surface. We want to analyze the thermal performance of the fuel rods by dividing the assembly into a number of unit cells (control volumes) and evaluating the performance of a cell, as shown in the right figure.
The fan circulates the warm air on the inside of the windshield to stop condensation of water vapor and allow for maximum visibility during wintertime (see images). You have been provided with some info. and are asked to pick from the bottom table, the right model number(s) that will satisfy the requirement.Your car is equipped with a fan blower setting that allow you to choose between speeds 0, 1, 2 and 3. Variation of the convection heat transfer coefficient is dependent upon multiple factors, including the size and theblower configuration.following image shows the parameters
A fuel rod of a PWR consists of about 320 solid fuel pellets inside a zircaloy cladding. Use the specified data to plot the distribution of temperature in the fuel rod. The temperature distribution should include the fuel region, the gap region, the cladding region, and end at the bulk coolant for two cases of low and high lin- ear heat generation rates. Data: Druel = 0.96 cm, Dinside Clad = 0.985 cm, Doutside Clad = 1.12 cm, kfuel = 1.73 W/m C, kclad = 5.2 W/m C, Twater = 300 C, Low = 5 kW/ft (164 W/cm), and d'High = 15 kW/ft (492 W/cm). The heat transfer coefficient from the fuel rod to bulk coolant is 34 kW/m².C. The heat transfer coefficient in the gap region is 5.7 kW/m2.C for the low and is 11.4 kW/m.C for the high linear heat generation rate.
A fuel rod of a PWR consists of about 320 solid fuel pellets inside a zircaloy cladding. Use the specified data to plot the distribution of temperature in the fuel rod. The temperature distribution should include the fuel region, the gap region, the cladding region, and end at the bulk coolant for two cases of low and high lin- ear heat generation rates. Data: Druel = 0.96 cm, Dinside Clad = 0.985 cm, Doutside Clad = 1.12 cm, kfnel = 1.73 W/m C, kclad = 5.2 W/m C, Twater = 300 C, 41ow = 5 kW/ft (164 W/cm), and d'High = 15 kW/ft (492 W/cm). The heat transfer coefficient %3D from the fuel rod to bulk coolant is 34 kW/m.C. The heat transfer coefficient in the gap region is 5.7 kW/m.C for the low and is 11.4 kW/mC for the high linear heat generation rate.
Question c d and e please
A fuel rod of a PWR consists of about 320 solid fuel pellets inside a zircaloy cladding. Use the specified data to plot the distribution of temperature in the fuel rod. The temperature distribution should include the fuel region, the gap region, the cladding region, and end at the bulk coolant for two cases of low and high lin- ear heat generation rates. Data: DFuel = 0.96 cm, Dinside Clad = 0.985 cm, Doutside Clad = 1.12 cm, kFuel = 1.73 W/m C, kclad = 5.2 W/m-C, Twater = 300 C, ģ1ow = 5 kW/ft %3D (164 W/cm), and d'High = 15 kW/ft (492 W/cm). The heat transfer coefficient from the fuel rod to bulk coolant is 34 kW/m².C. The heat transfer coefficient in the gap region is 5.7 kW/m2.C for the low and is 11.4 kW/m2-C for the high linear heat generation rate.