[VintageLambo] Re: Turbo Charge/intercooling for the Jalpas

Greg, I was thinking of the relatively narrow definition of "automotive" as commercially available passenger cars, which I believe our Lamborghini"s fall into. The medium to be cooled is the induction air and the cooling medium is the ambient air. In the case of an air to air intercooler the calories goes from 1) the induction air to (typically) 2) aluminum to 3) air. In the liquid intercooler the calories goes from 1) the induction air to (typically) aluminum, to 3) water/coolant which has to be 4) transported to another heat exchanger, the calories then goes from the coolant/water to (typically) 5) aluminum and lastly 6) ambient air. So what I meant was that the calorie path is more direct. The temperature limit is under the assumption that either engine coolant is used as a liquid or if a separate intercooler radiator is used, that it competes unfavorably with the engine radiator, A/C condenser and possible oil cooler for cool air in the front of the car. I do realize that the air to air intercoolers are exposed to those limitations (heat sources) as well. Whether air or liquid inter-cooling is best depends on a number of design parameters such as cost, component availability, reliability, weight and volume of components, engine room space allocation, ease of installation, maximum boost used, highest allowable intake temperature, cold or warm air intake, etc. and in the case of racing there may even be a rule-book that dictates the decision. Laust --- In VintageLambo@yahoogroups.com, "Greg" wrote: > Laust, > > I commend your projects, but am rather baffled by your statements: > > "The vast majority of automotive inter-cooling > is done with air to air intercoolers, which is more direct that an > air to water to air heat exchange. A coolant liquid intercooler > cannot reduce the air temperature below about 180F." > > 1.)I"m not sure what you mean by "more direct"?Do you mean, easier to implement? > > 2.)Air/liquid intercoolers are the standard in the racing for a number of excellent reasons.I also don"t understand why you are suggesting a thermal limit for the air/liquid intercooler.