Q2) A straight rectangular fin has a length of 2.5 cm and a thickness of 1.5 mm protrudes from a wall has temperature of 200°C. The thermal conductivity of the fin is 50 W/m. C, and it is exposed to a convection environment at 20°C and h=500 W/m.C. Calculate the fine effectiveness.

Q2) A straight rectangular fin has a length of 2.5 cm and a thickness of 1.5 mm protrudes from a wall has temperature of 200°C. The thermal conductivity of the fin is 50 W/m. C, and it is exposed to a convection environment at 20°C and h=500 W/m.C. Calculate the fine effectiveness.

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 2.47P

See similar textbooks

Related questions

Q: The compartment below is used as a freezer of refrigerator compartment. Inner wall is at -10 C and…

A: Given Thermal conductivity, k =0.040 W/(mK) Thickness, t= 2 cm

Q: A hollow cylindrical insulation of inside diameter 0.2 m and outside diameter 0.4 m conducts heat…

A: In general, there are three modes by which heat gets transferred from one place to another. The…

Q: The compartment below is used as a freezer of refrigerator compartment. Inner wall is at -15 C and…

A: Solution:

Q: a hot fluid of 200 °C. How long does it take the rod temperature to reach 70% of the fluid…

Q: Q1- An exterior wall of a house consists of 10.2 cm brick and 3.8 cm gypsum plaster. What thickness…

Q: In this problem you will estimate the heat lost by a typical house, assuming that the temperature…

A: Given data, Inside temperature of the house, Tin = 20 °C Outside temperature of the house, Tout = 0…

Q: If we consider a flat sheet of iron at 300 K does not receive any radiation from its surroundings.…

A: Given data:- The temperature of the iron sheet is T = 300 K. The length and width of the iron sheet…

Q: A certain matenial 2.5 cm thick, with a cross-sectional area of 0.1 m, has one side maintained at…

Q: A large concrete wall is 300 mm thick and has a thermal conductivity of 1.2 W/m C. The heat flux…

Q: Steel railroad tracks are laid when the temperature is -5.0 °C. A standard section of rail is then…

Q: Consider the triangular panel made of two different isotropic materials as shown in Fig. 2. A…

A: Given: To find: Conductance matrix of element 1 global flux vector f global conductance matrix

Q: 3.1 Which of the listed boundary conditions is NOT one that is commonly used for fin analysis? a)…

A: Given Fin analysis To find Uncommon boundary condition

Q: A small storage room has the dimensions of 20 m X 20m X 3m high. The walls of the storage consist of…

Q: 1- A wall 2 cm thick is to be constructed from material that has an average thermal conductivity of…

A: Given data: tw=2cmkw=1.3 W/m°Ckins=0.35 W/m°CTi=1300°CTo=30°C Need to determine the thickness of the…

Q: A wood wall 2.5 m ( 8 ft) x 7 m ( 23 ft) x 2.5 cm ( 1 in) thick has thermal conductivity k=0.1 W/Km.…

A: Note: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: Two bars A and B, each of length 2m and cross sectional area 1m^2, are placed end to end. Their…

A: Given Thermal conductivity, kA = 339 W/mK kB = 837 W/mK…

Q: How long should an aluminum fin be in order to dissipate 90% of the heat that an infinitely long fin…

Q: What is the heat loss through a wall insula with an 8 cm thick layer of mineral wool. The…

Q: Example 2 A cylindrical steam pipe having an inside surface temperature of 250 °C has an inside…

Q: 76. All surfaces of an infinitely lang heating element, having a cross section in the shape of a…

A: Given Thermal conductivity, k = 35 W/m.K Temperature, T1 = 400C…

Q: - A conductor transfers heat of 3000 Ja in 6 seconds. Given cross it's length of 20 cm Hat it's…

A: Note: Since you have asked multiple question, we will solve the first question for you. If you want…

Q: A small storage room has the dimensions of 20 m X 20m X 3m high. The walls of the storage consist of…

Q: A wall is constructed using bricks made of 3 different materials (A, B, C) as shown in the figure…

A: When two or resistances are connected end to end then they are said to be connected in a series…

Q: Q3/ A 1.0-mm-diameter wire is maintained at a temperature of 400 C and exposed to a convection…

A: The thermal conductivity of the wire is ro=khr+t=kh Substitute values in the above expression…

Q: Assume a steel pipe of r, = 10 mm, exposed to natural convection at h = 50 W/m².K. This pipe is…

Q: 2 10 km of steel railroad track are placed when the Temperature is 20°C. The linear coefficient of…

A: Write the initial length of the railroad track. Li=10 km Write the initial temperature of the…

Q: The compartment below is used as a freezer of refrigerator compartment. Inner wall is at -15 C and…

Q: Consider a composite solid block of the shape of the frustum of a cone with the curved surface…

A: Given : To find : Temperature distribution and flux

Q: There is a 1.20-cm-thick stagnant air pocket. A) What thickness of cork would have the same…

A: Given data, (1) Stagnate air pocket t1 = 1.2 cm K1 = 0.023 W/m.k Cork K2 = 0.046 W/m.k t2 =…

Q: 76. All surfaces of an infinitely long heating element, having a cross section in the shape of a…

A: The heat conduction of the bar can be solved by using the variable temperature. The given…

Q: A pipe having an outside diameter of 6 cm is maintained at 200°C by steam flowing inside. The pipe…

Q: Refer to the rectangular region in the figure below, the inner boundary surfaces are insulated and…

A: Conduction heat transfer is the transfer of heat by virtue of direct contact or molecular…

Q: T The cross-section of a wooden wall is shown in the figure. Compute for the temperature on the…

Q: • 1. A wall 2 cm thick is to be constructed from material that has an average thermal conductivity…

A: GIVEN DATA- WALL THICKNESS=2cm TEMPRATURE DIFFERENCE= 1300-30 = 1270'C WALL THERMAL CONDUCTIVITY…

Q: Insulating material is used to reduce heat loss from the heating furnace walls to the room. The…

A: Write the equation for the rate of heat transfer per unit area. QA=kTi-To∆t Here, Inner and outer…

Q: To avoid overheating, natural convection analysis is to be considered. If the minimum allowable heat…

A: Write the given data in the problem. Ts=45°CTa=32°C Q=30 W Here, Ts is the surface temperature, Ta…

Q: QI- Consider the composite structure shown in the figure. 1. sketch the equivalent thermal…

Q: QUESTION 2 The wall of a refrigerated truck consists of 1.5mm sheet steel outer surface, 10mm…

Q: There is a 1.20-cm-thick stagnant air pocket. A) What thickness of cork would have the same…

A: Given data: ◆ The thermal conductivity and thickness of stagnant air-pocket: Lair = 1.20 cm = 0.012…

Q: In a composite slab, the temperature at the interface (Te) between two materials is equal to the…

Q: A house's exterior wall consists of 15 cm layer of brick (k = 0.75 W/m-°C) followed by 4 cm layer of…

Q: Find the minimum amount of diameter for the insulation of a cylindrical electrical cable? Radius of…

A: Answer- Not sufficient information.

Q: A kiln used to make ceramics has a wall composed of firebrick. The heat conduction coefficient for…

A: k=1.04 Wm-KTs=100°CTs=373 KT∞=25°CT∞=298 Kε=.8Thickness L=25 cm or .2 mh=15 Wm2KSince…

Q: Find the thermal resistance r (in hr - *F/BTU) and the equivalent R-value (in hr ft?. °F/BTU) of a…

Q: A plane brick wall, 25 cm thick, is faced with 5 cm thick concrete layer. If the temperature of the…

A: It is very conceptual numerical of heat transfer subject. Used concept is Heat transfer through…

Q: 2.The owner of the house in number 1 is thinking that heat of 1.2 kW coming from the wall is too…

A: The rate of heat transferred is 162.8 W.

Q: 2-88 A 1.5-mm-diameter stainless-steel rod [k =19 W/m - °C] protrudes from a wall maintained at…

A: Given data: diameter d=1.5 mm Thermal Conductivity k=19wm °C Length L=12 mm Base Temperature Tb=45°C…

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

Q2) A straight rectangular fin has a length of 2.5 cm and a thickness of 1.5 mm protrudes from a wall has
temperature of 200°C. The thermal conductivity of the fin is 50 W/m.°C, and it is exposed to a
convection environment at 20°C and h=500 W/m."C. Calculate the fine effectiveness.

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

A glass window with an area of 0.625 m² is installed in the wooden outside wall of a room. The wall dimensions are 25 x 3.05 m. The wood has a k of 0.151W/m.K and is 3.05 cm thick. The glass has a k of 0.692W/m.K and is 5.0 mm thick. The temperature of the inside room is 27°C and outside air temperature is 268K. (1)What is the heat loss through wooden wall and glass window q(W) ? (2) What are the total heat loss?
A steel rod (k = 30 W/m degree) 1 cm in diameter and 7 cm long protrudes from a wall which is maintained at 100 degree Celsius. The rod is insulated at its tip and is exposed to an environment with h = 50 W/m2 degree and t a = 30 degree Celsius. Calculate the fin efficiency
The inside surface temperature of a glass oven door (0.5 m x 0.5 m x 0.001 m) is 180°C, the outside surface temperature is 25°C, and the thermal conductivity of glass is 1.4 W/(m•K) What is the rate of heat transfer?
A 2 cm thick steel pipe (thermal conductivity 43 W/[m °C]) with 6 cm inside diameter is being used to convey steam from a boiler to process equipment for a distance of 40 m. The inside pipe surface temperature is 115°C, and the outside pipe surface temperature is 90°C. If there is 600kW of heat loss, what is the thickness of the pipe?
. A circular fin has D = 1 cm, L = (15) cm, k = 100 W/mK, and h = 25 W/m2 K. Find finefficiency.
Find the minimum amount of diameter for the insulation of a spherical water tank? Radius of the tank is 10 m, thermal conductivity is 25 W/(m^2*K) and convective coefficient is 5 W/(m*K)
A straight fin of rectangular profile ( k = 14 W/m . oC ) , thickness of t= 2 mm and L= 23 mm . The base temperature Tb = 220 oC while the fin is exposed to the environment at 23 oC with h= 25 W/m2 .oC Calculate the heat lost peer meter of fin depth. ( use the chart to calculate the efficiency )
Presents the diagram of the problem, necessary formulas, clearance and numerical solution: An iron plate 2 cm thick has a cross-sectional area of 5,000 cm2. One of the faces is at 150 ◦C and the other is at 140 ◦C. How much heat flows through the plate each second? For iron, kT = 80 W/m K.
What is the rate of heat transfer through a piece of Celotex 3 ft by 8 ft by 1 in. in thickness, if the temp of one surface is 80°F and of the other side is 60°F? thermal conductivity of Celotex in AES = 0.028. Pls determine the temperature gradient and the direction of the heat transfer as well.
Two bars A and B, each of length 2m and cross sectional area 1m^2, are placed end to end. Their thermal conductivities are kA = 339 W/mK and kB = 837 W/mK . The left end of bar A is maintained at 373 K while the right end of B is maintained at 273 K. What is the temperature at the interface between A and B?
Sometimes we treat convected tip fin problem as an adiabatic one. Why? engineering convention because the fin tips have a very small area because the solution is the same none of the given because the base has the same temperature
What is the rate of heat transfer, temperature gradient, and the direction of the heat transfer through a piece of Celotex 3 ft by 8 ft by 1 in. in thickness, if the temp of one surface is 80°F and of the other side is 60°F? - thermal conductivity of Celotex in AES = 0.028.