Q: Consider the section of wall as shown in the figure, assuming one dimensionalheat flow, determine the following:I- Rate of heat transfer per unit area (Im²) through the composite wall.II- Determine also the temperature (Tp) as shown in the figure.To1 30 °CToo2 = 2 °Chi = 20 W/m?.C8 cmh2 = 12 w/m?.C20 cmA%3DkA = 0.6 W/m.°CD TD%3D30 cmkB = 0.8 W/m .°CT01To2kC = 0.9 W/m.°ChiBE10 cmh2kD = 0.7 W/m .°CkE = 0.5 W/m.°C%3DkF = 0.04 W/m.C8 cm 6cm.12cm

Answered: Image /qna-images/answer/ba43de61-76ad-45f8-b83b-9cf3c476923f.jpg

Answered: I- Rate of heat transfer per unit area…

I- Rate of heat transfer per unit area (Im) through the composite wall. Il- Determine also the temperature (Tp) as shown in the figure.

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.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.49P

See similar textbooks

Related questions

Q: 3. Give Siebel's equation to determine the specific heat of milk abov to all the symbols.

A: Hi and thanks for the questions. Since you have asked multiple questions, we will solve the first…

Q: Repeat Prob. 8-1 for cesium iodide. which has a transmissivity of approximately 0.92 between O.3 and…

A: Given, a. τ=0.9λ1=0.2μmλ2=4μmT=800°C=1073Kλ1T=0.2×1073λ1T=214.6μm.Kλ2T=4×1073λ2T=4292μm.KFraction of…

Q: e specific heat at co

A: Specific heat ( Cp) =136.15 lb/lb °R

Q: What is the thermal conductivity of a material with 65% water based Spell's equation?

A: Answer: The thermal conductivity of a material with 65% water is 0.4265 W/m•K.

Q: heat of 1 ton of

A: Given data Mass of ice =1 ton = 1000kg Required Latent heat

Q: informations of Thermal system

A: Thermal systems are those that include the capacity and exchange of heat. Heat stored in a fabric…

Q: Project 3: It is vital to optimize the heat loss from a house through well designed composition and…

A: Inside room has higher temperature and transfer of heat will be from inside of the room to the…

Q: areas of bars BE, BF, and CF s-

A: GIVEN: A TRUSS as shown in Fig maximum stress in tension is given by 100MN/m2 maximum stress in…

Q: using the potential well diagram discuss thermal expansion coefficient behavior of metals and…

A: Potential energy curves govern the characteristics of materials. The composition, bonding, crystal…

Q: <, latent heat of melting = 398 kJ/kg) at a temperature of 30°C, a pulse with energy of 0.5 cussed…

Q: 1) Imagine that no heat ends up being produced by nuclear reactions which are responsible for turn-…

A: As per our guidelines, we can answer only the first question. Kindly post the remaining questions in…

Q: ROBLEM: IVD-39 BOOK: ENGINEERING THERMOFLUIDS, M. MASSOUD

A: ns are always required to be used only when the convective heat transfer coefficient h are…

Q: What is thermal conductivity?

A: Thermal Conductivity has represented the property of a material to conduct the heat. The higher the…

Q: Find the heat loss from the fin,

A: Given; A fin has a following data:d=5 mm=0.005 mLength L=100 mm=0.1 mk=400 W/mKTo=1300 CT∞=300Ch=40…

Q: 4) The heat transfer per unit area through the composite wall in Figus

Q: Define the term linear coefficient of thermal expansion?

A: The coefficient of thermal expansion is defined as the material property by virtue of which a…

Q: Fin Comparisons You are designing a part that is to have truncated triangular fins, a diagram of…

Q: A window with an Rsrvalue of 0.18 receives 300 W/m² of insolation. If the interior of the building…

A: As given that For window RSI- = 0.18 , insolation = 300 W/m2 ; The temperature of the interior Ti=…

Q: Find the interface temperatures of the layers,ASAP

A: Given, For the composite wall; l=4m b=3m h=3mwhere, area of rectangular wall…

Q: 15)The material removal mechanism in AWJM is O Melting and vaporisation Erosion or localised stress…

Q: INTRODUCTION: for (HEAT TRANSFER THROUGH COMPOSITE WALLS) PROCEDURE: for (HEAT TRANSFER THROUGH…

A: Heat transfer : Heat transfer is the movement of heat across the border of the system due to a…

Q: Choose appropriate materials for the Trombe Wall design O Copper Wool Concrete O Foam Clay Glass

A: Trombe walls their are used as a passive solar building design to adopt the concept of indirect…

Q: As a researcher in the field of heat transfer, how will you distinguish between radiation by black…

A: Hello, since the question has multiple sub-parts and you did not specify which parts are needed to…

Q: calculate the heat transfer of 6.2 kg of lead to water

Q: To illustrate the effect of ice on the aluminum cooling plate, consider the drawing shown here and…

A: When heat flows from high temperature from lower temperature then there exists a thermal resistance…

Q: Q1. A bimetallic strip is used in temperature control systems as a safety component for automatic…

A: Given, The initial length of boh the metals, l0=3.5 cm=35 mm Thickness, t=0.25 mm The coefficient of…

Q: 1.1) Select the material that will assist the best in conducting heat from point A to point B: A)…

A: According to Bartleyby's policy we can answer only one question at a time so if you want other…

Q: QUESTION 2 Calculate the length of the resistor of a circular wire used in a heater element…

A: GivenV=240VQ=8Jt=0.25d=0.00016in1in=25.4mmρ=2.825×10-6Ωcm=2.825×10-5Ωmmnowd=0.00016×25.4=4.064×10-3m…

Q: 3. 100-gram oil at 20°C and 50-gram iron at 75 °C are placed in 200-gram iron container. The…

Q: he thermal conductivity of a specific material is highly dependent on a number of factors. These…

A: Thermal conductivity means the ability of material to conduct heat. It is denoted by symbol k. The…

Q: of the glass is 3 m Iheat transfer thi

A: ANSWER-7344watt

Q: Bm long rod is at an initial temperature of 80. The left side of the rod is at temperature equal to…

A: Given: L = 8 m T0=80 C Tl = 39 C Tr = 14 C α = 10-4 m2/s dx = 2m Assume dt =1 sec

Q: Ceramics have_ specific heat capacity value compared to metals. O High Very low O Medium O Low

Q: A silicon carbide ball with 5 mm in diameter has volume based CLTE (a,) of 8.1 x106/°C. If the ball…

Q: Suppose that you tumoff the heater at night 2 hours before go to bed and the temperature was 66° F.…

Q: The question in the picture

A: Hi, Thank you for the question. You have asked 2 questions. These question are too legthy to solve…

Q: What is meant by heat treatment process? Explain normalizing heat treatment process with neat Time…

Q: Explain what a “low specific heat” means in terms of heat retention.

A: The specific heat is the amount of heat per unit mass required to raise the temperature by one…

Q: Calculate thermal stress on an object given its original volume, temperature change, volume change,…

A: given: Calculate thermal stress on an object given its original volume, temperature change,…

Q: a. Explain the use of a psychrometric chart? Who, in terms of the construction sector workforce, may…

Q: Metals have ______________ specific heat capacity value compared to ceramics. High Medium Low Very…

A: Specific heat capacity Specific heat capacity is defined as the amount of heat required to raise the…

Q: 1.1 Some species of bamboo can grow 250mm/day. Assuming the individual cells in the plant are 10µm…

A: 1.1 Bamboo can grow 250mm/day converting 250mm/day into…

Q: 3. This problem will help you understand why the wind blowing makes you feel colder, especially in…

A: Since you have asked multiple subparts, only the first three subparts are solved for you, If you…

Q: Evaluate the thermal efficiency for each case (A, B, C and D) and obtain the optimal case which…

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

Q: Consider the section of wall as shown in the figure, assuming one dimensional
heat flow, determine the following:
I- Rate of heat transfer per unit area (Im²) through the composite wall.
II- Determine also the temperature (Tp) as shown in the figure.
To1 30 °C
Too2 = 2 °C
hi = 20 W/m?.C
8 cm
h2 = 12 w/m?.C
20 cm
A
%3D
kA = 0.6 W/m.°C
D TD
%3D
30 cm
kB = 0.8 W/m .°C
T01
To2
kC = 0.9 W/m.°C
hi
B
E
10 cm
h2
kD = 0.7 W/m .°C
kE = 0.5 W/m.°C
%3D
kF = 0.04 W/m.C
8 cm 6cm.
12cm

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 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

A thick concrete wall having a uniform temperature of 50oC is suddenly subjected to a stream of water so that the surface temperature is suddenly lowered to 15oC. How long will it take to cool the concrete to 30oC at a depth of 5 cm from the surface? Data: concrete properties, k = 1.37 W/m×oC, r = 2100 kg/m3, a = 7.5×10-7 m2/s.
Heat transfers Air is to be heated from 15 C to 270 C, as it flows through a tube 25mm diameter at average velocity 30 m/s. The tube surface is maintained at 280 C and the air is to be provided at rate 0.013 kg/s. Take the water properties k=0.0336 W/m.C , υ = 25.9× 10-6 m2/s , Cp=1.014 kJ/kg.C , ρ = 0.8826 kg/ m3 , Pr=0.689 . Determine the following The necessary tube length Heat transfer coefficient Heat transfer rate
What is the extension of a straight rum of steel pipe 25.86 m long, if the installation temperature is 4.4 °C and normal operation on steam at 8.79 kg/cm^2 ga, saturated steam .
As part of an industrial pipe system a 6-meter-long by .5 meter inner diameter copper pipeweighing 200kg holds a lubricating oil in place while is heats from 20 deg C to 55 deg C. At thatpoint, the valve opens and allows to oil to flow through. What is the total heat transferrequired? And, what percentage of the heat transferred does the oil and copper each accountfor? (oil density = .9 kg/L , oil specific heat = 1800 J/kgC)
a)Identifythe maximum velocitylimitof ammonia gas in the pipe if the flow is to be maintained as laminar flow. b)If the actual velocity of ammonia gas is 0.9 times the maximum velocitylimit, calculatethe heat transfer coefficient and heat transfer flux if the heat transfer area is 0.16m^2. c)Suppose the pipe has an outer diameter of 43.1 mm and the outer surface wall temperature of the pipe is 356 K, determinethe thermal resistance and thermal conductivity of the pipe.
4.) A 15-cm-diameter steam line carries saturated steam at 6 MPa and is located in a tunnel with stagnant air with a temperature of 50oC. The outside unit convective coefficient is 8.5 W/m2-K. The steam line is covered with 3 cm of 85% magnesia insulation. It is decided to reduce the heat loss by one-half. How much 85% magnesia insulation is required? Neglect thermal resistance of pipe and inside surface.
A steam power plant is located in the northern part of the country. Steam in the plant flows steadily through a 0.203-m diameter pipeline from the steam generating unit (SGU) to the steam turbine. At the SGU end, the steam conditions are determined to be P= 4 mPa, t - 400 celsius, h =3,264.9kJ/kg, and specififc volume = 0.121 m3/kg. At the steam turbine end, the conditions are found to be P=3.5 mPa, t = 392 celsius, h = 3,133.9 kJ/kg, specific volume 0.261m3/kg. Heat loss from the pipeline is 6.92kJ/kg. Determine the steam mass flow rate in kg/s.
Most automobiles have a coolant reservoir to catch radiator fluid that may overflow when the engine is hot. Such a radiator, made of copper, is filled to its 12-L capacity when at 10.0°C. -What volume of radiator fluid, in liters, will overflow when the radiator and fluid reach their 99.5°C operating temperature, given that the fluid’s thermal coefficient of volume expansion is 400.0 × 10-6 / °C? The coefficient of volume expansion for copper is 5.1 × 10-5 /°C.
In a reservoir system with a very large accumulation volume for the ideal fluid (water),a) Since the diameter of the ABCDEF outlet pipe is D = 20 cm, the flow rate through the pipe,b) Calculate the velocity, velocity height, relative pressure and pressure heights in the ABCDEF outlet pipe.c) Draw the relative energy and piezometer lines of the system.d) If the relative evaporation pressure of water is pv = -98.5 kPa, what can be z maximum?e) Determine how much the diameter of the outlet pipe can be reduced at most without causing cavitation, with the relative evaporation pressure of water pv = -98.5 Pa and h = 6 m.f) Calculate the critical velocity value for cavitation.
A small centrifugal pump is used to pump 30-Celsius water at the rate of 6 L/s with ahead of 44.54 m. If the diameter of the pump is 20 cm and operate at 1200 rpm,determine;(i) head coefficient,(ii) capacity coefficient, and(iii) power coefficient. also the same small centrifugal pump is used to pump water at same rate but with a temperature of 15-Celsius. determine in which condition (15-Cor 30-C) is the pump perform better in term of;(i) power out, and(ii) pump efficiency.Justify your answer.
***(a=2 b=1) The larger impurities and cloudy sediments in the water of aquarium may be removed by means of filtering, as shown in the figure. For this reason, the water in the aquarium must be recirculated through the filter at a volumetric flow rate of 0.0004ab m3/s. The water in the aquarium is forced through the filter by using the pressurized air from an aerotor pump. The cross-sectional areas of the glass tube and plastic tube are 0.0001ab m2 and 0.00002ab m2 respectively. Assume that densities of water, air and air-water mixture are 99a,b kg/m3, 1.1ab kg/m3 and 9ab kg/m3 respectively. Atmospheric pressure is 10ab25 Pa. Neglecting all the losses, determine i-the pressure difference that must be created by the aerator pump ii-the volumetric flow rate of the air through the plastic tube iii- the power that must delivered by the aerator pump for overall efficiency %6a,b. Solve the problem by making the necessary assumptions and drawing the schematic figure.
A rectangular heat exchanger is to be divided intosmaller sections using sheets of commercial steel0.4 mm thick, as sketched in Fig. The fl ow rate is20 kg/s of water at 20°C. Basic dimensions are L = 1 m,W = 20 cm, and H = 10 cm. What is the proper numberof square sections if the overall pressure drop is to be nomore than 1600 Pa?