Power required from forced induction?


by James125
Tags: forced, induction, power, required
James125
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#1
Sep3-13, 01:59 PM
P: 14
I'm trying to calculate the power required from forced induction with this equation;

W˙=m˙CpT1ηc⎡⎣(P2P1)(γ−1γ)−1⎤⎦

However I seem to be getting rather low results for work ~0.8W I have done my calculations in this spreadsheet. Any ideas where I've went wrong?

thanks

Note the file is .xls not .xlsx I had to change it to upload
Attached Files
File Type: xlsx Supercharger power req.xlsx (14.0 KB, 2 views)
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SteamKing
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#2
Sep3-13, 04:19 PM
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Thanks
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File doesn't open for me. Please try to repost. Others have posted .xlsx files before.
James125
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#3
Sep4-13, 02:46 AM
P: 14
You can open the original file if you change the extension manually. Never to worry I have worked out how to save as xlsx. Missed out a factor of 2 first time round (forgot about it being 4 stroke). I still seem to be a factor of 1000 or so out. I have ~0.4w
Attached Files
File Type: xlsx Supercharger power req.xlsx (9.9 KB, 3 views)

SteamKing
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#4
Sep4-13, 03:31 AM
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Power required from forced induction?


Do you have a source for the equation in the OP?
James125
James125 is offline
#5
Sep4-13, 04:32 AM
P: 14
Quote Quote by SteamKing View Post
Do you have a source for the equation in the OP?
post #20 http://www.physicsforums.com/showthr...=395212&page=2

I would have asked on that thread but it's closed


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