Steel (AISI 1010) plates of thickness 6 = 6 mm and length L = 1 m on a side are conveyed from a heat treatment process and are concurrently cooled byatmospheric air of velocity u, = 10 m/s and Tg = 30°C in parallel flow over the plates.-ConveyorAir TFor an initial plate temperature of T; = 310°C, what is the rate of heat transfer from the plate? What is the corresponding rate of change of the platetemperature? The velocity of the air is much larger than that of the plate.

Solution: Given Data: δ=6 mmL=1 mu∞=10 m/sT∞=30oCTi=310oC To Find: (a) Rate of heat transfer from…

Answered: Steel (AISI 1010) plates of thickness 6…

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

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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
Atmospheric air with free flow velocity U_∞= 30 m/s flows through a circular cylinder at T_∞= 250 K and D = 2.5 cm diameter. The surface of the circular cylinder is kept at a uniform temperature T_w = 350 K.The CD drag coefficient is 1.1. (D=1 cm- 3 cm and U_∞= 10 m/sec 30 m/s)(a) Calculate the average heat transfer coefficient ( h ̅_m,W/m2K)(b) Determine the amount of heat transfer (Q, W) per 1 m length of the cylinder(c) Calculate the drag force (FD, N) acting on the 1 m length of the cylinder FD=0.1 A=0.34 D=2.9 cd=1.2
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.
Q1/ Consider the following fluids, each with a velocity of u = 9 m/s and a temperature of 10°C, in cross flow over a 10-mm diameter cylinder maintained at 50°C. Calculate the rate of heat transfer per unit length for saturated water? ***** 2 Satu Dety PP Liquid 3149 9920 4.246 996.0 528 9040 7.354 902.1 393 9901 Nu 0.3+1 Endalay Specific Heal Veputation 0.62 Re2 Pro [1 + (0.4/Pypa[1+ (282,000) aper 0.0231 2402 4180 00304 4378 0.0397 2419 4178 0.0612 2407 4179 00655 2335 4180 tree Thermal Coductivity THAY Liquid Vapor Le Dynamic Vacosity 1870 Vapor Liquid 0607 0.0186 0110 0.90710 1875 0615 0.0169 0.796 101 100110 1880 BAZ3 0.0192 0720x10 1016 10 1825 0.631 0.5196 0653x10 103150 1832 0437 0.0000 0596x10104610 Fran www. Lignon A'IN Ligad Vaper 614 1.00 0.24710 542 100 0234-10 4.83 1.00 0.337x10 4.32 100 0377x10 191 100 0415-10
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In cold climates, weather reports usually give both the actual air temperature and the "wind-chill" temperature, which can be interpreted as follows. At the prevailing wind speed there is a rate of heat loss per unit area q, from a clothed person for an air temperature Te. The wind-chill temperature Twe is the air temperature that will give the same rate of heat loss on a calm day. Estimate the wind-chill temperature on a day when the air temperature is -10°C and the wind speed is 10m/s, giving a convective heat transfer coefficient of 50 W/m² K. A radiation heat transfer coefficient of 5 W/m² K can be used, and under calm conditions the convective heat transfer coefficient can be taken to be 5.0 W/m² K. Assume a 3 mm layer of skin (k = 0.35 W/m K), clothing equivalent to 8 mm-thick wool (k = 0.05 W/m K), and a temperature of 35°C below the skin. Also calculate the skin outer temperature.
Express result of Part 5 in the form of a Cartesian vector.
A 0.407m long vertical steel plate at a surface temperature of 700K is in contact with hot air at 237K, latm absolute pressure. If E=0.81 for steel pipe:a. Calculate the total 1S1 transfer coefficient for the convection increase 1 convectionb. What is the heat loss per unit area of the surface?
Please do it on a paper. Thank you

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