Another good use for pre-compressor injection, is the sustained high load, trailer towing. The CAC for these vehicles is in front of the radiator. The heat of compression is so overwhelming, T2 can easily be over 500 F (250 C) at higher altitudes. This heat load rejected in front of the radiator is enormous, calculated at times, over 300,000 BTU/HR. In short, the radiator can no longer function well enough to serve the cooling needs. It is possible to absorb 150,000 BTU/HR in latent evaporation across the compressor, and this is a large burden removed from the CAC, and hence radiator can perform adequately and keep coolant under the BP.
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Michael Patton (aka Killerbee)
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