I had to to find p2 in part a of the question using the equation P2/P1 = (V1/V2)^n, where i was told by my tutor that n = 1.3. I got an answer for p2 as 11425608.39 Pa, which my tutor has marked as correct. Then in part b "Determine the polytropic process index 'n' from the initial and final...
my tutor also sent me this message regarding question one a while ago:
"Hi Andy
Task 1 the formulas to use are
P2/P1 = (V1/V2)^n
n=1.3"
So he's basically said himself that n = 1.3
My tutors response to my query was:
"Okay some tips!
Its all down to the maths answer is over 3 and a bit
iTs a merit question from memory that's why its harder than the others
Have a valiant go!"
If you're still getting 1.3 from that information maybe i need to ask for a second tutors opinion as this question is stopping me getting distinction which is what I need.
Cheers guys
This is the question I am given, I've got answers for part a its just part b I am struggling with.
"A compressor used in tyre fitting workshop is used to inflate commercial vehicle tyres to a high psi. The cylinder piston reciprocates and draws air in through an inlet valve and out via a...
P1V1^n = P2V2^n
1.6 x 10^5 x 0.04^n = 11425608.39 x 0.0015^n
0.04^n/0.0015^n = 11425608.39/(1.6 x 10^5)
26.67^n = 71.41
log 26.67^n = log 71.41
n log 26.67 = log 71.41
n = log 71.41/log 26.67
n = 1.3
Thats the working as i worded it on my assignment.
I also spent a good 3 hours going over...
Homework Statement
"Determine the polytropic process index 'n' from the initial and final condition parameters of the air (gas) in the air compressor cylinder."
Im struggling with this question on my thermodynamics coursework and was wondering if anyone could help me out a little bit...