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RAAL Shell Oil Coolers - RAAL - #4

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For this type of coolers different fin heights can be used (between 5 and 12 mm). Please find below an easy method of calculation for the core width:

Core width (W) vs. No. of tubes

700 650 600 550 500 450 400 350 300 250 200 150 100

50 0

s.

7

j*

y

y

r

-y

-y

y*

y

t

?

—i

_

fin height

=5 mm

/

>

1

i—

fin height

=8 mm

fin heighl

=9 mm

1 11 1 1 lu 1 \J 1 11

%

—>

—

fin height

=10 mm

J

r-

—i

fin heighl

=11 mm

t

->

1 11 1 1 \\j l\A 1 11

—a

—

fin height

=12 mm

5

0

10 20 30 40 50 60

No. of tubes

70

80

90