secondary water-cooler for S55 inter-cooler...

[Dackelone]

I had not seen anyone post pics of the water cooler for the S55's intercooler. BMW uses a radiator up front to keep the intercooler cold. Here it is on my buddy's new M4. The cut away pics were taken in the lobby of the BMW Museum.






front radiator used to keep intercooler on top of the engine cold...

[///M ARMY]

Those are some great photos!

[saxonb]

Maybe not ideal for the track, but should weigh less than a whole secondary WTA intercooler system.

http://www.iosrjournals.org/iosr-jmc...3/F0233844.pdf
http://www.superchevy.com/how-to/eng...ooler-install/

Turbocharging System with Air Conditioner Assisted Intercooler

In this system the air conditioning system is used to assist the turbocharging system. In summers, when
the efficiency of the intercooler is low due to high ambient temperature, the air conditioning system will be used
to improve its efficiency because in summers, normally the AC is always switched on while we drive and on the
other hand, we don’t need this system in winters because the ambient temperature is sufficiently cool to improve
the efficiency of the intercooler. So the design of the intercooler is such that it will work properly with and
without the air conditioning system (i.e. in summers and winters both). Besides this it will also increase the
charge density to high extent. This will increase the oxygen availability in the cylinder for combustion.
Circulating refrigerant enters the compressor in the thermodynamic state known as a saturated vapor
and is compressed to a higher pressure, resulting in a higher temperature as well. The hot, compressed vapor is
then in the thermodynamic state known as a superheated vapor and it is at a temperature and pressure at which it
can be condensed in the condenser. That hot vapor is routed through a condenser where it is cooled and
condensed into a liquid by flowing through a coil or tubes of the condenser. This is where the circulating
refrigerant rejects heat from the system and the rejected heat is carried away by the air. The condensed liquid
refrigerant, in the thermodynamic state known as a saturated liquid, is next routed through an expansion valve
where it undergoes an abrupt reduction in pressure. That pressure reduction results in the adiabatic flash
evaporation of a part of the liquid refrigerant. Then this mixture of vapor and liquid refrigerant is passed through
the intercooler of the turbocharger as the cold fluid where it is completely evaporated by absorbing the required
latent heat. This cools the hot compressed air flowing in the tubes of intercooler coming from the turbocharger
compressor.

Description of Intercooler
The design of intercooler is such that the air to be cooled is passed through the outer tube and the
refrigerant passes through the inner tube of the two concentric tubes arrangement fitted in the arrangement of
fins. This type of heat exchanger is suitable for our purpose because when the air conditioning system (AC) is
running, the hot air can give its heat to both, the refrigerant and the cold air passing through the fins of the
intercooler. When the AC is not running, the hot air from the turbocharger can give its heat to the cold air
passing through the fins and will work as the normal intercooler. In winters, the intercooler will work as a
normal intercooler and in summers, it will be assisted by the air conditioning system of the vehicle.

[justinluv949]

http://www.killerchiller.com

It would be pretty cool to have one of these on an M3/M4.
M3 the Cobra killer/ track king.

[HellRaizzer]

Originally Posted by saxonb

Maybe not ideal for the track, but should weigh less than a whole secondary WTA intercooler system.

http://www.iosrjournals.org/iosr-jmc...3/F0233844.pdf
http://www.superchevy.com/how-to/eng...ooler-install/

Turbocharging System with Air Conditioner Assisted Intercooler

In this system the air conditioning system is used to assist the turbocharging system. In summers, when
the efficiency of the intercooler is low due to high ambient temperature, the air conditioning system will be used
to improve its efficiency because in summers, normally the AC is always switched on while we drive and on the
other hand, we don’t need this system in winters because the ambient temperature is sufficiently cool to improve
the efficiency of the intercooler. So the design of the intercooler is such that it will work properly with and
without the air conditioning system (i.e. in summers and winters both). Besides this it will also increase the
charge density to high extent. This will increase the oxygen availability in the cylinder for combustion.
Circulating refrigerant enters the compressor in the thermodynamic state known as a saturated vapor
and is compressed to a higher pressure, resulting in a higher temperature as well. The hot, compressed vapor is
then in the thermodynamic state known as a superheated vapor and it is at a temperature and pressure at which it
can be condensed in the condenser. That hot vapor is routed through a condenser where it is cooled and
condensed into a liquid by flowing through a coil or tubes of the condenser. This is where the circulating
refrigerant rejects heat from the system and the rejected heat is carried away by the air. The condensed liquid
refrigerant, in the thermodynamic state known as a saturated liquid, is next routed through an expansion valve
where it undergoes an abrupt reduction in pressure. That pressure reduction results in the adiabatic flash
evaporation of a part of the liquid refrigerant. Then this mixture of vapor and liquid refrigerant is passed through
the intercooler of the turbocharger as the cold fluid where it is completely evaporated by absorbing the required
latent heat. This cools the hot compressed air flowing in the tubes of intercooler coming from the turbocharger
compressor.

Description of Intercooler
The design of intercooler is such that the air to be cooled is passed through the outer tube and the
refrigerant passes through the inner tube of the two concentric tubes arrangement fitted in the arrangement of
fins. This type of heat exchanger is suitable for our purpose because when the air conditioning system (AC) is
running, the hot air can give its heat to both, the refrigerant and the cold air passing through the fins of the
intercooler. When the AC is not running, the hot air from the turbocharger can give its heat to the cold air
passing through the fins and will work as the normal intercooler. In winters, the intercooler will work as a
normal intercooler and in summers, it will be assisted by the air conditioning system of the vehicle.

Thank you for that interesting read.
Do you know what coolant is required in this reservoir? Do you put the same coolant as engine coolant fluid when a top up is needed?

Thanks...

[sh55]

Great pictures, but FYI the radiator you have pictured is the engine oil cooler.

If I remember correctly the intercooler radiators are in the passenger side air dam and in front of the main radiator behind the kidney grills.