| Re: Turbocharger efficency
There isn't much there to absorb heat, and, there isn't a whole lot to carry heat away in a turbocharger. They are, most are, water cooled and oil lubricated but these things are designed to live at high temps, especially on the turbine side. I imagine the compressor housing gets to a stable temp under load and stay there. The design of the compressor wheel definitely plays a part as to how much hotter the air gets compared to another wheel, but neither are going to be heak sinks to any appreciable extent.
But, that is what we have aftercoolers for!! Either water to air, or air to air, they accomplish the same thing and bring down the temp of the compressed air. This is where you can see some serious differences in efficency of setups.
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