2. Carbon steel shaft with diameter of 350 mm is heat treated in a gas fired furnace where the gas in the furnace is at 2000 K and convection coefficient of 25 W/m²K. If the initial temperature of the carbon steel shaft is 500K and the specific heat capacity and density of Carbon Steel are 600 J/kg.K and 7800 kg/m³ respectively; a. How much time does the ball take to be heated to a temperature of 1500K b. What will be the temperature of the ball after 30 minutes of heating c. If you increase the diameter of the shaft two times what will be the duration required for heating the ball to the required temperature of 1500K

2. Carbon steel shaft with diameter of 350 mm is heat treated in a gas fired furnace where the gas in the furnace is at 2000 K and convection coefficient of 25 W/m²K. If the initial temperature of the carbon steel shaft is 500K and the specific heat capacity and density of Carbon Steel are 600 J/kg.K and 7800 kg/m³ respectively; a. How much time does the ball take to be heated to a temperature of 1500K b. What will be the temperature of the ball after 30 minutes of heating c. If you increase the diameter of the shaft two times what will be the duration required for heating the ball to the required temperature of 1500K

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

i need the answer quickly
A plate-shaped glass wall with a thickness of 3 cm and a heat transfer coefficient of 2W / m.K has 30C air on the inside and 10C ambient air on the outside. The internal and external convulsion coefficients are 30 W / m ^ 2.K and Since it is 15W / m ^ 2.K,a.) The amount of heat in the unit area of the wall,b.) Calculate the inner and outer surface temperatures of the wall.
QUESTION 7 A large slab 1.0 m thick is poured rapidly. The hydration process in the concrete (k=0.84 W/mK) produces an intenal heat generation at a constant rate of 100 W/m3. If the surface temperature of both sides of the slab is 16°C, determine the maximum temperature in the slab. O a. 16 °C O b. 27 °C OC. 37 °C O d. 47 °C O e. 17 °C O f. None of them
REFERENCE: FROM BOOK - ENGINEERING THERMOFLUIDS, M. MASSOUD
only find top
3. The bottom of a 50mm diameter, 2mm thick metallic induction heater is 120C while its thermal conductivity is 60 W/m-C. The voltage and current flowing into the heater are 220V and 5A, respectively. Find the temperature at the top portion of the pan.
As part of your work-study program at HTU, you successfully got a student job at your local ‘BEST-BURGER-IN-TOWN’ to help pay your own tuition and expenses. Since cylindrical frozen burger patties are cooked when placed on a hot stainless-steel cooking top, you like to think of the case as a conduction problem:a. Write down the appropriate general heat conduction equation that describes the cooking of those beef patties.b. Clearly state all assumptions.c. After cancelling the proper terms, write down the final energy equation for the patties.Do not solve for temperature distribution or heat transfer.
For the calculation of heat transfer by natural transport from a horizontal cylinder, what is the dcharacteristic length found in the number Gr. Please select one: a. Length b. Half of the perimeter c. None of them d.Diameter e. Environment
The inner and outer surfaces of a 1-m by 1-m wall of thickness 100 mm and thermal conductivity 10 W/m. C are maintained at temperatures of 35 C and 15 C, respectively. Determine the heat rate by conduction. Select one: a. 2 kW b. 2 MW c. 20000 W
In 1 paragraph, make a narrative of what you have learned in Heat Transfer
A tube having a cylindrical shape of length equals to 30 m and diameter equals to 10 cm passes through a room. If the temperature of the outer surface of the tube is 110 C and the temperature of the air in the room is 10 C. Determine the rate of heat transfer by convection from the tube to the air. The heat transfer coefficient h = 3 W/m^2.K. Select one: a. 355 W b. 43 kW c. 2827.35 W
dsphere dbar • Given the above system, two spheres attached to the ends of a cylinder, determine the mass moment of inertia about the axis normal to the page as a function of the variables provided. Note, you can treat the masses of each element of the system as known o (msphere and mbar). After deriving an expression for the mass moment of inertia about the axis normal to the page as a function of the variables, calculate the mass moment of inertia given: osphere properties ▪ mass of sphere = 5 kg 1 diameter of sphere = 0.5 m bar properties ▪ • Determine the resultant force and moment acting on the system if the system is moving as follows: mass of bar = 25 kg length of bar = 7.5 m diameter of bar = 0.25 m O a = 5î+ 2ĵ m/s² O αG = 7k rad/s² ασ