Heat exchangers often consist of many triangular passages. Typical is Fig. 555, with L = 60 cm andtan isosceles-triangle cross section of side length a =2 cm and included angle = 60°. If the averagevelocity is V=2.5 m/s and the fluid is SAE 10 oil at 20°C, estimate the pressure drop. (SGoil-=0.870,kgμ = 0.104ks)bTable 6.4 Laminar FrictionConstants fRe for Rectangular andTriangular DuctsRectangularbla0.00.050.10.1250.1670.250.40.50.751.0afRep.96.0089.9184.68L = 60 CH82.3478.8172.9365.4762.1957.8956.91a = 2 cinIsosceles triangle200, deg0102030405060708090fRep.48.051.652.953.352.952.051.149.548.348.0

Given-Information:- L = 60 cma = 2 cmβ = 60°CV = 2.5 m/sT = 20°CSGoil = 0.870μ=0.104 kg/m3s…

Answered: L = 60 cm a = 2 cin B

Engineering

Mechanical Engineering

L = 60 cm a = 2 cin B

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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Concept explainers

Stress transformation

The term stress indicates the measure of internal forces that develop due to an external force's application on an object. When a specific external force is applied to an object, internal stress generates in the material. The value of stress can obtain by taking the ratio of the externally applied force and cross-sectional area of the object. There are different types of stress depending on the type of external force.

Question

Heat exchangers often consist of many triangular passages. Typical is Fig. 555, with L = 60 cm and
tan isosceles-triangle cross section of side length a =2 cm and included angle = 60°. If the average
velocity is V=2.5 m/s and the fluid is SAE 10 oil at 20°C, estimate the pressure drop. (SGoil-=0.870,
kg
μ = 0.104ks)
b
Table 6.4 Laminar Friction
Constants fRe for Rectangular and
Triangular Ducts
Rectangular
bla
0.0
0.05
0.1
0.125
0.167
0.25
0.4
0.5
0.75
1.0
a
fRep.
96.00
89.91
84.68
L = 60 CH
82.34
78.81
72.93
65.47
62.19
57.89
56.91
a = 2 cin
Isosceles triangle
20
0, deg
0
10
20
30
40
50
60
70
80
90
fRep.
48.0
51.6
52.9
53.3
52.9
52.0
51.1
49.5
48.3
48.0

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