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- Path: sparky!uunet!ogicse!uwm.edu!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!nucsrl!alg4.eecs.nwu.edu!yeap
- From: yeap@eecs.nwu.edu (Kok-Hoo Yeap)
- Newsgroups: sci.electronics
- Subject: Energy transfer effiency of microwave oven
- Summary: Does energy transfer depends on load ?
- Message-ID: <1992Jul23.221140.8403@eecs.nwu.edu>
- Date: 23 Jul 92 22:11:40 GMT
- Article-I.D.: eecs.1992Jul23.221140.8403
- Sender: usenet@eecs.nwu.edu (Mr. Usenet)
- Organization: EECS Department, Northwestern University
- Lines: 18
- Originator: yeap@alg4.eecs.nwu.edu
-
- A question about energy transfer in microwave oven:
-
- A microwave oven with a glass of water, volumn V.
- Let Pa be the power draws from the AC outlet,
- Pb be the power actually received to heat up the water.
- Ef = (Pb / Pa) * 100.0 is the efficiency of energy transfer.
-
- If we plot Ef vs V, what does the curve look like ?
- Does Ef depends on the volumn of water V, or is it always a constant ?
-
- If Ef depends on what you put in the oven chamber, which
- material/food has higher energy transfer efficiency and why ?
-
- --
- / Gary (Kok-Hoo) Yeap | Email: yeap@eecs.nwu.edu \
- \ Department of EECS | /
- / Northwestern University | \
- \ Evanston, IL 60208 | /
-