Chapter 6 Cooling Water
System
_4_.
H_e_at_E_x_ch_a_n..:.g:...e_r
__________________________
3,4JH3(B)(C)E
4. Heat Exchanger
4-1
Heat exchanger construction
The heal exchanger cools the hot fresh water that has
cooled the inside
of
the engine with sea water.
The inside of the heat exchanger cooling pipe consists of
36 small dia. tubes and baffle plates.
The sea water flows through the small dia tubes and the
fresh water flows through the maze formed
by
the baffle
plates.
Outletsr~
Side
cover
Inlet
:
Y,;
- c
O-ring
. I,
I
u"
Seawater
~~
Cooling
pipe
There is a reservoir at the bottom of the cooling pipe
which serves as the fresh water tank. There
is
an
exhaust
water passageway (line)
in
the reservoir which forms a
water cooled exhaust gas manifold.
The filler cap
on
top of the heat exchanger has a pressure
valve, which lets off steam through the overflow pipe
when pressure
in
the fresh water system exceeds the
specified value.
It also takes
in
air from the overflow pipe
when pressure
in
the fresh water system drops below
the normal value.
Filler
cap
body
(with
pressure
control
valve)
Overflow
tube
Heat
exchanger
(fresh
water
cooler)
O-ring
~c....==:o......c=::,._,:==--==--F====--,
Exhaust
gas
¢
in
plug
=-
n
I '
!_J
6-8
~·~-
_J
'
: l f
.
L_
I:_~
Filler
cap
Heat
exchanger
Sea
water
Outlet
-,-.----++-,-·""F9-"~--b
r-~=::::.,··--
Sea
water
inlet
Cooling
tube
Baffle
plate
Exhaust
manifold
9
Exhaust
gas
outlet
Printed in Japan
HINSHI-H8009
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