A spherical steel tank (k = 15 W/m.°C, thickness=1.5 cm) tank of inner diameter 3.85 mcontains ice @ 0°C in a room at 20°C, the entire steel tank to be at 0°C.Wliat is theconvection beat transfer rate (W)? Air properties (k= 0.02439 W/m."C, Pr=0.7336, v1.426E-5 m /s)%3DSelect oneO A 1434.3OB 1688.6OC 1926.3OD. 939.46OE 1164.8

When the molecules of a high temperature body transfers to the body having low temperature, then…

A spherical steel tank (k-15 W/m.°C, thickness-1.5 cm) tank of inner diameter 3.85 m contains ice @ 0°C in a room at 20°C, the entire steel tank to be at 0°C.What is the convection beat transfer rate (W)? Air properties (k-0.02439 W/m."C, Pr=0.7336, v 1.426E-5 m/s) Select one: OA 14343 OB 1688.6 OC 1926 3 OD 939.46 OE 1164.8

A spherical steel tank (k-15 W/m.°C, thickness-1.5 cm) tank of inner diameter 3.85 m contains ice @ 0°C in a room at 20°C, the entire steel tank to be at 0°C.What is the convection beat transfer rate (W)? Air properties (k-0.02439 W/m."C, Pr=0.7336, v 1.426E-5 m/s) Select one: OA 14343 OB 1688.6 OC 1926 3 OD 939.46 OE 1164.8

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

This question about heat transfer/liquid Obtain the following basic equations modeling natural convection in the two-dimensional plane at steady conditions in terms of the given dimensionless quantities. Note: The buoyancy term in the y-momentum equation will be obtained based on dimensionless numbers. Second photo gives you what you need.
Number 3 A food product with 80% moisture content in a 7 cm diameter can wants to be frozen. The density of the product is 1000 kg/m³, the thermal conductivity is 1.0 W/(m²K), and the initial freezing temperature is -1.75°C. After 8 hours in the freezing medium -25°C, the product temperature becomes -10°C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinder. h= answer in W/(m²K)
African elephants have a large body with a surface area of the trunk as A= 11 m². Typically, elephants roll into wet mud in summer time. The evaporation of moisture from skin surface enhances the convection heat transfer rate to h= 30 W/m²K (without evaporation the h value is very small ~ h=8 W/m²K). The normal metabolism of elephants (the total heat generation rate in the elephant body) is Qgen = 2500 W. Based on what you learned in ENME321, the surface temperature of the elephant (or any object with heat generate rate) is calculated using the following equation: Ts = Too+ Qgen /(h A). The air temperature Too is 32°C. Elephants are not considered as being overheated if the surface temperatures are lower than 37°C. a. The elephant has not rolled into wet mud. Use h=8 W/m²K, estimate the surface temperature of the elephant. Do you think that the elephant will be overheated? b. The elephant has rolled into wet mud. Use h=30 W/m²K, estimate the surface temperature of the elephant. Do you…
A horizontal thin plate with a length of L= 10 cm is tiled with a constant heat flux from the bottom and is cooled by air at the top. The air velocity is U = 40 m / s and the temperature is 20 ° C. What should be the minimum heat flux so that the plate temperature does not exceed 80°C? (kW / m²) v 17.94 x 10-6 m²/s = 0.0277 W/(m.K) Pr = 0.71
Thermal jackets are typically put on cryogenicstorage tanks to minimize the heat transfer gainsfrom the surroundings. Consider a cylindercontainer that is 1.5 m long made from steel (k = 750W/m.K) with an inner diameter of 0.5 m and outerdiameter of 0.7 m. If the liquefied natural gas (LNG)inside the cylinder is maintained at 90 K, ambientconditions are Tamb = 20 °C, h = 7 W/m2.K. What is the required insulationmaterial to maintain the outer temperature of that jacket of 15 °C? Usethe end of the book and write your assumption with the right value.(Take a maximum allowed jacket thickness of Lins = 7 cm)
In the arctic sea, the ice sheets are melting. Let's calculate the temperautre distribution in one such ice sheet. The sheet is 2 m thick. Under the sheet there is ice-water mixture and it can be assumed that the temperature of the bottom surface of the ice sheet is approximately 0°C. Air at -20°C is blowing above the sheet. The convection coefficient of air is 15 W/m².K. The thermal conductivity of ice is 2.2 W/m.K. What is the temperautre of icesheet at its center (i.e., at 1 m from the surface)?
A car's rear window is defogged by the passage of hot air over its inner surface. If the hot air is at T∞, i = 40 °C and the corresponding convection heat transfer coefficient is hi = 30 W/(m²K), what are the temperatures of the inner and outer surfaces of the glass, which has 4 mm thick, if the outdoor ambient air temperature for T∞, e = −10 °C and the associated convective coefficient for he = 65 W/(m²K)?
Example of engineering application using Convection heat transfer. And draw a diagram of convection heat transfer. Note: Agricultural Machines only.
A block with thickness 2.3cm, and conductivity k-4W/mK is heated such that its temperature at its top is T₁-191°C Above the block, air at temperature Tair 22°C is blowing across the top which has a surface area of 1m² with heat transfer coefficient of 26W/m²K. air & W/mK T₁ T₂ What is the thermal resistance from T₂ to T? Provide total thermal resistance answer in units of K/W and to 4-decimal places