HEAT LOSS MODEL OF FLUID FLOW THROUGH A DEEP SEA FLOWLINE WITH VARIOUS CROSS-SECTIONAL SHAPES
Fluid ow through a owline in the sea bottom faces many obstacles. The temperature of the uid inside the owline of about 1-3 km depth is high around 80-85o C, while the surrounding temperature of the sea water is very low , approximately 2-4o C. The dierence between the inside and outside...
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| Format: | Theses |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/33842 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Fluid
ow through a
owline in the sea bottom faces many obstacles. The
temperature of the
uid inside the
owline of about 1-3 km depth is high
around 80-85o C, while the surrounding temperature of the sea water is very
low , approximately 2-4o C. The dierence between the inside and outside
owline temperature causes heat loss to occur. Furthermore, it leads to
accelerate the wax or condensate formation which in turn forms a barrier
for
uid
ow. Motivated by this phenomenon, in this thesis we study the
eect of cross-sectional geometry of
owline on the value of heat loss, and
we restrict ourselves to consider regular polygonial cross- sections only. Our
results show that a circle has minimum heat loss energy compared to other
polygons. However, this shape produces the lowest
uid rates compared
to other polygons. To nd a polygon with low heat loss as much as circle
but gaining high
ow rate of
uid, an alternative shape of
owline can be
design by controling the cross-sectional thickness of
owline and the material
property. These alternative shapes turns out to be hexagons, heptagons, and
octagons. |
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