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Reply to "electric heater control valve"

On some of the airplanes such as the King Air they use air from the exhaust to heat the edge or lips of the intake. On one exhaust tip the fitting points into the exhaust and on the other exhaust it points out. P2 T2 refer to the ports. A lot of people just know what it means.

If you look at the metal around the intake duct, this is where the air goes through and heats it up:



Here is an exhaust tip with the port pointed out so the hot air would be pulled out here by the exhaust:



What I am doing is similar but it is an experiment. I am not sure how well it will work but the idea is the flow is aligned to go in one tube by preference and pulled by the other by its sheer alignment. I have not actually run the engine long enough to test it yet but that is coming.

If it does work, it saves on plumbing. I don't have to run water lines from the water pump or use an extra pump.
Last edited by comp2
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