CHARGE COOLERS

Perfect Power Articles.

 

HEAT EXCHANGERS - CHARGE COOLERS AND INTER-COOLERS

An inter-cooler (air to air heat exchanger) is a device that looks like a radiator, but contains the intake-pressurized air, which is cooled by the ambient airflow through the inter-cooler.

A charge-cooler (air to liquid heat exchanger) is a device where the ambient air-cools water, which in turn cools the intake air. It is an inter-cooler consisting of two "radiators".

 

WHAT'S SO GOOD ABOUT CHARGE COOLERS/INTER-COOLERS?

A big advantage of the charge cooler setup is the lower overall pipe and inter-cooler length, less plumbing, which offers faster response, giving peak boost faster than most front mount conventional inter-cooler setups. Some setups can use reservoirs that can have ice put into it for intake temperatures lower than ambient air, giving a big advantage but of course this would require a constant supply of ice.

Another advantage of a charge cooler is it thermal mass, which is very high due to the water. This means that the intake air will not change drastically when the car stops moving.


WHAT'S SO BAD ABOUT CHARGE COOLERS?

With any heat exchanger you will get heat soak eventually if stationary, but the charge cooled setup will take longer to bring the temps back down once you start moving again as the water has to cool first . Charge coolers are less efficient and more costly than inter-coolers, because the heat has to travel over more transfer surfaces. An inter-cooler transfer is: ambient air/metal/intake air, where a charge-cooler is: ambient air/metal/water/metal/intake air. It is a thermodynamics law, which states that heat (energy) can flow only when there is a temperature difference.

 

CONCLUSION

All modern fuel injection systems, including ours, compensate for air temperature. However, cooler (denser!) air gives more power, and this is what it's all about.

 

THE FOLLOWING PERFECT POWER PRODUCTS CAN BE USED IN CONJUNCTION WITH CHARGE COOLERS/INTER-COOLERS: