## A T stat in an eng rad just speeds up getting the eng up to temp. Once
the 190 deg F
T stat open up, its outa the circuit. My 2010 mustang normally sits at aprx
205 F for eng coolant.
Low speed eng fan kicks in at 206 F..drops out at 196 F. The high speed
thresholds are a bit higher.
I can program them to whatever I want.
## For folks that have increased GPM rate from typ 4 gpm, to as high as 55
gpm, on supercharger setups,
see no decrease at all, maybe 1-2 degs F max, on their IATs.....=
manifold Intake Air Temps.
## I have a PD blower on mine. Waste of effort trying to increase GPM rate
through the loop.
Doesnt work, u just end up circulating hot water faster through the loop.
## Loop consists of an intercooler, which is just a small rad, sandwiched
between discharge
side of the blower, and the al intake manifold. Al manifold sits at 200F
at all times, since its bolted to the
AL heads, which is bolted to the AL eng block. Block, heads, manifold,
all sit at 200F.
## water routed through intercooler rad is routed to the de-gas 1 gal
bottle, ( in the top, out the bottom),
to get rid of any air in the loop, and allow for expansion, etc. Then
routed to IC pump,, mine is 4 gpm.
From output of IC pump, then routed to bottom of the massive 18" tall x
21" wide HE. Comes out the
opposite corner of the HE, on top, then back to the IC rad, completing
the..closed loop.
## Increase the GPM rate, and coolant is in and out of the HE so fast, it
doesnt get a chance to get cooled
by the air flowing through the HE. Hence its a waste of effort. With
slower GPM rates, the coolant exiting
the top of the HE is indeed cooler, BUT it also then has to flow through the
IC at a slower rate. Slower rate
through the coolant through the IC means the IC gets hot. Too slow, and
it ends up boiling before it exits
the IC..which is not what you want.
## On the other hand, if you have an unlimited supply of cold water, like
say a swimming pool, and pump
cold water through the IC at a fast rate, like say 20 gpm, then discharge it
into the drain, and do it all with
1 inch OD hosing, the IC will extract heat like crazy from the hot air
coming out of the blower.
## we measured all of this over the last 5 years. What does work is super
thick HEs, like the 3.125 inch thick
variety, and loads of air through em, with unrestricted top and bottom
grilles on the front of the car,
and also ducted hoods, to facilitate even more heat extraction. The
function of the IC is to extract heat from the
200-300 F discharge air from the blower. Function of the HE is to dump
that extracted heat back to the ambient air.
## Its a precise juggling act for car stuff. But 5000 BTU is
manageable on a SS water cooled amp. If the pump failed, or
any loss of water flow from a leak, etc, and you would require overheat
protection, like asap, but that is no big issue.
or some kind of water flow monitoring, and or coolant temps before and
after the SS RF deck section. What would make
noise is the fan on the external rad. But even the rad and fan and pump
can be remoted else where.
Jim VE7RF
-----Original Message-----
From: Gary Schafer
Sent: Thursday, February 16, 2017 11:53 AM
To: 'Jim Thomson' ; amps@contesting.com
Subject: RE: [Amps] SS amps watercooling
Heat transfer is determined by amount of flow and temperature difference.
Slowing the flow does not increase heat transfer.
There is an old myth that having a thermostat in a car will make it run
cooler because the heated water stays in the radiator longer..
73
Gary K4FMX
## Ideally what you want is for the flow rate to be FAST through the
heat sink and RF deck, to extract heat, but SLOW
through the rad...to dump heat. But its all one big loop, so you are
screwed. Only fix is a big rad, and lotsa air on the rad.
Other wise you will just be circulating hot water. Think of how long
it takes to boil just 2 litres of water in a standard
1500 W CCS kettle in your kitchen...2-3 mins max. And you cant use
vapour phase cooling with SS devices, too hot at 100 deg C.
## Im sure water cooling can indeed be done with SS, but it would all
have to be sized very carefully.
Jim VE7RF
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