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- Path: sparky!uunet!gatech!hubcap!ncrcae!ncrhub2!ncratl!mwilson
- From: mwilson@ncratl.AtlantaGA.NCR.COM (Mark Wilson)
- Newsgroups: sci.energy
- Subject: Re: Flywheel batteries as EV power source
- Message-ID: <78904@ncratl.AtlantaGA.NCR.COM>
- Date: 24 Dec 92 03:19:22 GMT
- References: <etc.> <51704@seismo.CSS.GOV> <1992Dec23.201247.9477@erg.sri.com>
- Organization: NCR Engineering and Manufacturing Atlanta -- Atlanta, GA
- Lines: 19
-
- In <1992Dec23.201247.9477@erg.sri.com> rat@erg.sri.com (Ray Trent) writes:
-
- >Transmission and accessory losses are what, about 20% of that? If I
- >remember correctly, the best electric motors are order of 95%
- >efficient.
-
- This is true of the electricity applied to the motor. BTW, was this
- motor you mention large enough to deliver 15HP. In most other fields
- small equals efficient, as you scale them up, they get less effiecient.
- I don't know if this holds true for electric motors.
-
- If you want to get the effieciency of an electric motor you have to
- add up all of the losses in getting the electricity to your house, then
- into the battery and then back out of the battery as well.
- --
- Mob rule doesn't become any prettier, just because the mob start to call itself
- a government.
- It ain't charity if you are using someone else's money.
- Mark.Wilson@AtlantaGA.NCR.com
-