Subject	How much power does it take to turn a compressor wheel?
Posted by	AshsZ on January 11, 2004 at 3:27 PM
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Message	I've been pondering this a little while and haven't quite figured it out.. Hypothetically, if you were to measure the shaft power required to turn a T04B 60 trim wheel to flow ~8psi and ~35#/min, what would that figure be? I'm thinking it can be theoretically calculated using the flow map which shows wheel RPM, efficiency, and using the pressure ratio and amount of air moved, it can be converted into a power figure. Anyone have some ideas? [ ashleypowers.com ] [ agpowers@bellsouth.net ] [ Zemulator Information Sheet ] [ Z1 Motorsports Website ] Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast?
Follow Ups	How much power does it take to turn a compressor wheel? - AshsZ 15:27:56 01/11/04 just yesterday, I was wondering how fast a turbine spins - ZEngineer 15:35:02 01/11/04 wouldn't the engine stall if it didn't? (n/m) - MaTT (90TT) 15:38:35 01/11/04 no - aliaZ 15:53:17 01/11/04 yes it does spin at idle - aliaZ 15:49:25 01/11/04 Probably only a few thousand RPM at idle.. - AshsZ 15:56:16 01/11/04 180,000!!! I had read more like 80,000... - ZEngineer 16:00:32 01/11/04 80,000 is slow.. That's like single turbo Supra wheelRPM. - AshsZ 16:06:02 01/11/04 Pull out the thermodynamics book and do a calculation - shirow 17:02:59 01/11/04 I would be forever endebted to you... =) (n/m) - AshsZ 17:35:18 01/11/04 I have some formulas for this whole procedure and the answer - Carlos Ramirez 19:24:50 01/11/04 Well, I was thinking it was probably around 2HP or so.. - AshsZ 19:36:56 01/11/04 turbos work off exhaust energy. Idea efficient - Carlos Ramirez 20:08:22 01/11/04 Where's that powerpoint pres. from the other night, - NSANY(ATL) 08:23:36 01/12/04 yeah I haven't gotten it yet.. he did a good job (n/m) - Carlos Ramirez 10:08:55 01/12/04 It takes 15 to 30 HP to run a super charger. So why - MikeH(Twin GT35BB Incon Z) 22:17:33 01/11/04 A centrifugal compressor has significantly less frictional - AshsZ 23:01:12 01/11/04 You still have to accelerate mass and pump air at - MikeH(Twin GT35BB Incon Z) 00:48:34 01/12/04
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