**Example 7.24**Steel (AISI 1010) plates of thickness \(\delta = 6 \, \text{mm}\) and length \(L = 1 \, \text{m}\) on a side are conveyed from a heat treatment process and are concurrently cooled by atmospheric air. The air velocity \(u_\infty = 10 \, \text{m/s}\) and the temperature \(T_\infty = 20^\circ \text{C}\) in parallel flow over the plates.**Diagram Explanation:**- The diagram shows a conveyor system with three steel plates hanging vertically and spaced apart.- Air flows parallel to the plates, indicated by arrows pointing in the direction of the conveyor movement.- The initial temperature of the plates is \(T_i = 300^\circ \text{C}\).**Questions:**- For an initial plate temperature of \(T_i = 300^\circ \text{C}\), what is the rate of heat transfer from the plate?- What is the corresponding rate of change of the plate temperature?**Note:**The velocity of the air is much larger than that of the plate.

Answered: Image /qna-images/answer/fe7cee22-8147-4d6a-bad9-2686d3bd25e8.jpg

24 Steel (AISI 1010) plates of thickness 8 = 6 mm and length L = 1 m on a side are conveyed from a heat treatment process and are concurrently cooled by atmospheric air of velocity u = 10 m/s and T₁ = 20°C in parallel flow over the plates. →8 Air T -Conveyor For an initial plate temperature of T. = 300°C, what is

24 Steel (AISI 1010) plates of thickness 8 = 6 mm and length L = 1 m on a side are conveyed from a heat treatment process and are concurrently cooled by atmospheric air of velocity u = 10 m/s and T₁ = 20°C in parallel flow over the plates. →8 Air T -Conveyor For an initial plate temperature of T. = 300°C, what is

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

PLEASE ANSWER COMPLETELY AND CLEAN FOR AN UPVOTE!!
QI/ An aluminum rod 4.0 cm in diameter and 10 cm long protrudes from a wall that is maintained at 250°C, and air at 40°C is forced it at a velocity of 50 m/s. If the surface emissivity is 0.7, Calculate the total heat loss per unit length if the walls of the enclosing room at 15 °C ?. T, h. T A,= A
An oil preheater consists of a single tube of 10-mm diameter and 5-m length, with its surface maintained at 180°C by swirling combustion gases. The engine oil (new) enters at 70°C. What flow rate, in kg/h, must be supplied to maintain an oil outlet temperatur of 105°C? What is the corresponding heat transfer rate, in W? m = kg/h W
Air at a pressure of 1 atm and a temperature of 250 °C is in parallel flow over a top surface of a flat plate that is maintained at a uniform temperature of 20 °C. The plate has a length of 0.35 m (in the flow direction) and a width of 0.2 m. The Reynolds number based on the plate length, ReL is 9x10“. (a) Find the rate of heat transfer to the plate. (b) If the free stream velocity of air is increased 5 times and pressure increased 4 times, what will be the rate of heat transfer? For air at 1 atm: assume k=0.0299 W/m.k, Pr =0.70. Draw sketch and show all calculations.
A vehicle carrying refrigeration box is moving with a speed of 24 m/s on a road withambient temperature of 323 K. The dimensions of box are 3 m(H) × 4 m (W) × 10 m (L).Assume a wall temperature of 283 K and air flow is parallel to the longest side of the box.Neglecting the heat loss from the front side and backside of the box, calculate heat lossfrom four surfaces. For flow over flat surfaces useNu = 0.036(Re)0.8(Pr)1/3The properties of air at bulk mean temperature are : = 1.165 kg/m3, Pr = 0.701, cp = 1005 J/kg – K,  = 16 × 10–6m2/s
Air (pressure 1 atm) enters a circular pipe 5 cm in diameter at 20 °C with an average speed of 5 m/s. The tube wall is maintained at a constant surface temperature of 160°C, and the mean outlet temperature is 80°C. Estimate the length of the tube. Mainly, I also need the solution from concepts of how the heat flow behaves in the system, it can be with a diagram.
Problem-2 For the turbulent incompressible boundary layer, the velocity profile is given as u/Ue, y = y/8, Ue and d are boundary-layer edge velocity where, u = and boundary layer thickness, respectively. Using momentum integral equation, prove that: 8/x = 0.383/Re,/5 8% /x = 0.0479/Re/5 and 0/x = 0.0372/Re/5
6- Air at a pressure of 200 kPa and free-stream temperature of 27°C flows over a square flat plate at a velocity of 30 m/s. The Reynolds number is 10° at the edge of the plate. Calculate the heat transfer for an isothermal plate maintained at 57 C. v = 8,6x10 k = 0.0274; Pr = 0.7 V Nu = 1299 Answers: g = 676W
A tube bank uses an aligned arrangement of 15‐mm‐diameter tubes with ST=SL=30 mm. There are 10 rows of tubes with 50 tubes in each row. Consider an application for which cold water flows through the tubes, maintaining the outer surface temperature at 40°C, while flue gases at 427°C and a velocity of 5 m/s are in cross flow over the tubes. The properties of the flue gas may be approximated as those of atmospheric air at 427°C. What is the total rate of heat transfer per unit length of the tubes in the bank, in kW/m?