Rate of heat transfer for a fluid varies with the Reynolds number and the regime of the flow (i.e., laminar or turbulent). It turns out, under a given condition the average convection coefficient (between the surface of the tube and the fluid) for a flow in a 10-m long tube can be calculated from the equation below. hD k 3.66+0.83Re¹/3, 0.025Re¹/5, Here D is the diameter of the tube, and k is the conductivity of the fluid. Consider the diameter of the tube to be 0.2 m. The fluid is air at a temperature of 10°C and velocity of 1 cm/s. The temperature of the surface is 20°C. What is the rate of heat transfer to the fluid? 61.08 W if flow is laminar if flow is turbulent
Rate of heat transfer for a fluid varies with the Reynolds number and the regime of the flow (i.e., laminar or turbulent). It turns out, under a given condition the average convection coefficient (between the surface of the tube and the fluid) for a flow in a 10-m long tube can be calculated from the equation below. hD k 3.66+0.83Re¹/3, 0.025Re¹/5, Here D is the diameter of the tube, and k is the conductivity of the fluid. Consider the diameter of the tube to be 0.2 m. The fluid is air at a temperature of 10°C and velocity of 1 cm/s. The temperature of the surface is 20°C. What is the rate of heat transfer to the fluid? 61.08 W if flow is laminar if flow is turbulent
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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Transcribed Image Text:Rate of heat transfer for a fluid varies with the Reynolds number and the regime of the flow (i.e., laminar
or turbulent). It turns out, under a given condition the average convection coefficient (between the surface
of the tube and the fluid) for a flow in a 10-m long tube can be calculated from the equation below.
hD _
=
3.66 +0.83Re¹/³,
0.025 Re¹/5,
if flow is laminar
if flow is turbulent
Here D is the diameter of the tube, and k is the conductivity of the fluid. Consider the diameter of the
tube to be 0.2 m. The fluid is air at a temperature of 10°C and velocity of 1 cm/s. The temperature of
the surface is 20°C. What is the rate of heat transfer to the fluid?
61.08 W
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