a 10 m long section of a 6cm diameter horizontal hot water pipe passes through a large room whose temperature is 22 C . If the temperature of the outer surface of the pipe is 65 C, determine the rate of heat loss from the pipe by natural convection.
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Answer:
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Explanation:
A 10-m-long section of a 6-cm-diameter horizontal hot water pipe passes through a large room whose temperature id 22C. If the... ... horizontal hot water pipe passes through a large room whose temperature id 22∘ ∘ C. If ... determine the rate of heat loss from the pipe by (a) natural convention and (b) radiation.
To determine the rate of heat loss from the hot water pipe by natural convection, you would need to know the heat transfer coefficient (h), the surface area of the pipe, and the temperature difference between the outer surface of the pipe and the surrounding air.
The surface area of a 10m long, 6cm diameter horizontal pipe can be calculated as follows:
Surface area = 2πrL = 2π * (0.06/2) * 10 = 0.376 m^2
The temperature difference can be calculated as follows:
ΔT = T_surface - T_air = 65 - 22 = 43 C
Using these values, you can then use the formula for heat transfer by natural convection:
q = hAΔT, where q is the rate of heat transfer, h is the heat transfer coefficient, A is the surface area, and ΔT is the temperature difference.
To determine h, you would need more information about the fluid (air) flowing around the pipe, its velocity, and the physical properties of the fluid. Without this information, it's not possible to calculate the rate of heat loss from the pipe by natural convection.
For more such questions on heat loss: https://brainly.in/question/40588449
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