You want to figure out whether it is safe to touch the outside surface of the pipe in question. Here are the details: "A stainless steel pipe is carrying hot water to a test facility. The inside surface of the pipe is at a temperature of 70°C and the inner radius is 0.2 m. The thickness of the steel pipe is 12 mm. It is exposed to air at 30°C on the outside. The average convection coefficient of air over the pipe is 15 W/m². C. Thermal conductivity of steel is 54 W/m.°C. Negelect radiation. Consider steady conditions." Calculate, assuming a 1-m long pipe segmen, the temperature of the outside surface of the pipe.

You want to figure out whether it is safe to touch the outside surface of the pipe in question. Here are the details: "A stainless steel pipe is carrying hot water to a test facility. The inside surface of the pipe is at a temperature of 70°C and the inner radius is 0.2 m. The thickness of the steel pipe is 12 mm. It is exposed to air at 30°C on the outside. The average convection coefficient of air over the pipe is 15 W/m². C. Thermal conductivity of steel is 54 W/m.°C. Negelect radiation. Consider steady conditions." Calculate, assuming a 1-m long pipe segmen, the temperature of the outside surface of the pipe.

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

An insulated steam pipe located where the ambient temperature is 32°C, has an inside diameter of 50 mm with 10 mm thick wall. The outside diameter of the corrugated asbestos insulation is 125 mm and the surface coefficient of still air, h, = 12 W/m²-K. Inside the pipe is steam having a temperature of 150°C with film coefficient h; = 6000 W/m2-K. Thermal conductivity of pipe and asbestos insulation are 45 and 0.12 W/m-K respectively. Determine the heat loss per unit length of pipe. O 120 W O 110 W O 140 W O 130 W
An insulated steam pipe is routed horizontally through an unheated room, then vertically to the ceiling. The pipe is insulated, and the outside diameter of the insulation is 15 cm. The horizontal and vertical lengths of pipe are both 4 m long. The outside-surface temperature of the insulation is 50°C, and the room temperature is 5°C. How much heat is lost from the insulation by convection?
To reduce heat flux, the skin is wrapped with a clothing material. What should be the thickness of the clothing material covering the surface of this skin tissue to reduce the heat flux to half of its original value? What is the temperature at the skin-clothing material interface? Note: if you think you need to have more information to solve this problem, you're free to make assumptions. Please state them clearly in your answer, if you need to make such assumptions.
The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm air is at T = 40°C and the 30 W/m2-K, what are corresponding convection coefficient is h; the inner and outer surface temperatures, in °C, of 4-mm-thick window glass, if the outside ambient air temperature is To || 0,0 -30°C and the associated convection coefficient is ho W/m2-K? Evaluate the properties of the glass at 300 K. = 65 Tsi i °C Ts.0 °C T5,0 i
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)?
An industrial cold room has four 200 mm thick walls made of concrete. The walls are insulated on the outside with a layer of foam 60 mm thick. Cladding with a thickness of 15 mm protects the foam on the outside from the elements. The composite wall surface temperatures are –3 °C on the inside and 18 °C on the outside of the room respectively. The thermal conductivities of concrete, foam and cladding are 0.75, 0.35 and 0.5 W/m K respectively. Assuming perfect thermal contact between the layers of the composite walls, draw the typical temperature distribution across the layers and determine the heat energy gained per hour through all 4 walls of the room with a total surface area of 20 m2. What does this heat energy represent in terms of the refrigeration system of the cold room?
there is no radius only given thickness
If a heat transfer coefficient of 2.84 W l(m2 • K) exists on each of the two inside faces of two sheets of 6.35-mm-thick glass separated by an air gap, calculate the gap that can be used such that the rate of heat transfer by conduction through the air gap equals the rate of heat transfer by convection. What is the rate of heat transfer if this gap is exceeded. The thermal conductivity of air of 0.0242 WI (m . K). Solve for temperature of 20°C and 12°C on the outside surfaces of the glass. Would the calculated gap change in value for different values of the surface temperatures? Would there be any advantage to increasing the gap beyond this calculated value?
Can you help me answer my sample problem for my review?