Choose the false statement? A) At very low values of Prandtl number, material has higher thermal conductivity compared to its momentum diffusivity B) None of the above C) We can express lumped capacitance relation as the combination of Biot and Fourier numbers D) If Biot number is less than 0.1, we can neglect thermal resistance in some direction E) We can calculate convective heat transfer coefficient from Nusselt number

Choose the false statement? A) At very low values of Prandtl number, material has higher thermal conductivity compared to its momentum diffusivity B) None of the above C) We can express lumped capacitance relation as the combination of Biot and Fourier numbers D) If Biot number is less than 0.1, we can neglect thermal resistance in some direction E) We can calculate convective heat transfer coefficient from Nusselt number

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 2.63P

See similar textbooks

Related questions

Q: Two thermal reservoirs are connected by a solid copper bar. The bar is 2 m long, and the…

A: The temperature distribution represents the temperature at finite points on the surface. The…

Q: The steady-state temperature distribution in a one-dimensional wall of thermal conductivity k=83…

A: Given:Thermal conductivity of the wall, k=83 W/m.oCThickness of the wall, L=300 mm=0.3 mTemperature…

Q: Write a short note on the following: What are the best possible solutions to increase the heat…

A: Required: a) The best possible solution to increase the heat transfer rate. b) Material with k=121…

Q: 4 ) Every temperature measuring instrument makes use of specific physical property in order to…

A: Pt sensor: Pt sensor are the most common type of platinum resistance thermometer. it refers that the…

Q: A semi - infinite slab that has a thermal conductivity of 0.2 W / m ° C and thermal diffusivity of…

A: Given: a. Temperature after 100 seconds, erfn=error function

Q: A 6 m long electrical resistance wire of 2 kW is made of stainless steel (k = 15.1) with a diameter…

A: L=6 mQ= 2 kWd=0.2 cmr=0.1 cm=0.001 mk=15.1 W/mk=30oCh=175 W/m2To determine:The differential equation…

Q: Determine the heat conduction of a boiler if you are given the following data: The thickness of the…

Q: A plane wall is insulated on its left side (x = 0). The wall generates energy uniformly at a rate of…

Q: 2. Prove that in long Fin ,the heat transfer by conduction is equal convection heat transfer if h=20…

Q: Which one of these is false about heat conduction equation? A) None of the above B) In…

A: This question is from heat transfer. We have to answer wrong statement.

Q: In a heat transfer equipment in a laboratory you used a pipe of outside diameter 9cm to convey steam…

A: Given : d = 9 cm t = 3 cm k1 = 4 k2

Q: "Two-by-four" wood studs have actual dimensions of 4. 13 x 9.21 cm and a thermal conductivity of 0.1…

A: Given that "Two-by-four" wood studs have actual dimensions = 4. 13 x 9.21 cm thermal conductivity=…

Q: A composite wall is made up of 10 cm of common brick against 15cm of concrete with 1.5 cm of plaster…

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

Q: 1) The heat flux and surface temperature of a board are related to each other with the thickness…

Q: You have smooth slabs of Titanium (Ti), polycrystalline silica (SiO2), and atactic PS. Rank them…

A: 1. Thermal conductivity (k). The thermal conductivity is a characteristic of a material that allows…

Q: Heat at a rate of 5 kW is being uniformly produced in a solid cylinder. The cylinder has a diameter…

Q: nner diameter 30 cm, outer diameter 40 cm and heat conduction coefficient 20 W / m ∙ a cylindrical…

Q: Steam passes through a steel pipe with an inner diameter of 60 mm and an outer diameter of 75 mm at…

Q: 60 mm and an outer diameter of 75 mm. Pipe The heat transfer coefficients inside and outside are 500…

Q: 1.)An aluminum tank with a volume of 1000 liters is filled with gasoline. Both are at a temperature…

A: The gasoline overflow from the tank is Voverflow = 22 liters.

Q: Steam passes at 250 ° C through a steel pipe with an inner diameter of 60 mm and an outer diameter…

A: In real life problems, Heat transfer is carried out by three phenomenon such as 1) Conduction:- When…

Q: Design a heat equation model to determine the solution. The physical data needed to model for copper…

Q: 9. Fin efficiency is defined as: tanh (mL) (hP/k Ac)1/2 (heat transfer with fin) / (heat transfer…

Q: Material Thermal Conductivity (K) A Diamond 0.026 W/m K

A: Option c is the correct answer

Q: or False for the following 1.In liquids and gases, heat transmission is caused by conduction and…

A: 1.In liquids and gases, heat transmission is caused by conduction and convection.Answer - False In…

Q: A house has a composite wall of wood, fiberglass insulation, and plaster board, as indicated in the…

Q: A composite wall is made up of 10 cm of common brick against 15cm of concrete with 1.5 cm of plaster…

A: Given data:- brick concrete plaster Width(b) 10cm=0.1m 15cm=0.15m 1.5cm=0.015m Thermal…

Q: You are designing a PCB laid horizontally on the ground. The PCB surface temperature can’t exceed…

Q: Which of the following heat transfer modes is described by the Fourier mode? a) Conduction b)…

Q: Question 1: In your own words, write down the differences between thermodynamic and heat transfer.…

Q: The rate of heat flow equation is Q O A. Thermal resistance OB. Thermal coefficient OC. None of…

Question

Choose the false statement?

A) At very low values of Prandtl number, material has higher thermal conductivity compared to its momentum diffusivity

B) None of the above

C) We can express lumped capacitance relation as the combination of Biot and Fourier numbers

D) If Biot number is less than 0.1, we can neglect thermal resistance in some direction

E) We can calculate convective heat transfer coefficient from Nusselt number

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 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

Please help me
A plane wall is insulated on its left side (x = 0). The wall generates energy uniformly at a rate of q [W/m³] and has thermal conductivity k. On its right side (x = L), the wall is exposed to a fluid at temperature Too with convection coefficient h. b) a) Draw a schematic of this plane wall. Make the schematic large enough that you can sketch the temperature profile within the wall after solving for it in later steps. Write out the full form of the Heat Diffusion Equation (HDE) in the appropriate coordinate system for this physical scenario. Simplify the HDE and write out the appropriate boundary conditions in their general form (e.g., Tlx-o = T₁). c) Derive an expression for the steady-state temperature distribution 7(x) within the wall. You may start from the general solution provided in Appendix C of the Bergman textbook; or you may derive the solution directly from the differential equation and the boundary conditions. Annotate your schematic by sketching the temperature profile…
Thx
Steam passes through a steel pipe with an inner diameter of 60 mm and an outer diameter of 75 mm at 250 ° C. The heat transfer coefficients inside and outside the pipe are respectively 500 and 25 W / m2K. If the ambient temperature is 20°C and the heat transfer coefficient of the pipe is 56.5 W/mK A)Find the heat loss from the 5 m length of the pipe. B) What thickness of insulation should be made from the material with a heat transfer coefficient of 0.035 W / mK in order to reduce the heat loss by 95%.
Requirements: 1. Fill the tables. 2. Calculate the thermal conductivity and the thermal resistance. Comment on results. 3. Plot the measured values for temperature difference over the electrical power. please don't reject the question. Thank you
The steady-state temperature distribution in a one-dimensional wall of thermal conductivity k=83 (W/m) °C) and thickness 300 mm is observed to be T(°C) = ax2+bx+c, where a = -2500 °C/m2 , b = 500 °C/m, c = 250 °C and x is in meters. a) What is the heat generation rate ?̇ (W/m3 ) in the wall ? b) Find the maximum and minimum temperatures in the wall. c) Find the amount of heat transferred to the right side of the wall (for 1 m2 surface area.)
HEAT TRANSFER CASE: I want to know what temperature in (°F) the cylinder will have inside. It's a heat transfer problem. what is T2 ? HEAT TRANSFER They gave me an answer all squashed together that i can't make sense of it. If you could help me makes sense of it thank you!
A) Answer the question shown in the image
First Question please
a.) Determine the thermal conductivity of the plasterboard (kp), in W/m*K b) Determine the value of the inside convection resistance (Ri), in degrees C/W. c) Determine the value of the fiberglass blanket resistance (Rb), in degrees C/W. d) Determine the value of total heat transfer resistance (Rtotal), in degrees C/W. e) Determine the value of heat loss (q), in kW.
Steam passes at 250 ° C through a steel pipe with an inner diameter of 60 mm and an outer diameter of 75 mm. Pipe The heat transfer coefficients inside and outside are 500 and 25 W / m2K, respectively. Ambient temperature 20 ° C and The heat conduction coefficient of the pipe is 56.5 W / mK. a)Find the heat loss from the 5 m length of the pipe. b)What thickness of material with heat transfer coefficient 0.035 W / mK to reduce heat loss by 95%? insulation should be made.
Steam passes at 250 ° C through a steel pipe with an inner diameter of 60 mm and an outer diameter of 75 mm. Pipe The heat transfer coefficients inside and outside are 500 and 25 W / m2K, respectively. Ambient temperature 20 ° C and The heat conduction coefficient of the pipe is 56.5 W / mK. a)Find the heat loss from the 5 m length of the pipe. b)What thickness of material with heat transfer coefficient 0.035 W / mK to reduce heat loss by 95%? insulation should be made.