Lecture21_2nd law irreversibilities-handout

Lecture21_2nd law irreversibilities-handout - ME200 :...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Professor: Euiwon Bae Lecture Hours : MWF 1:30-2:20 in ME1130 Office Hours : MWF 2:30-3:30 in ME1091 Email : ebae@purdue.edu Phone : 765-494-6849 Course website : http://engineering.purdue.edu/ME200 ME200 : Thermodynamics I Lecture 21 : Introduction to the 2 nd law, irreversibilities
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 2 nd law of thermodynamics Irreversibilites Examples
Background image of page 2
3 0 th Law of Thermodynamics 0 th law of thermodynamics 45 ° C 45 ° C ? A B C
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 1 st Law of Thermodynamics - First law of thermodynamics : Energy is conserved! ?°± amount of energy transferred ²? by heat transfer ?°± amount of energy transferred ?³± by work = change in the energy stored within a system Energy in (Q) Energy out (W) Energy stored (U) ´ − µ = Δ¶ + Δ· E PE Energy balance for closed system Sign convention Of W and Q
Background image of page 4
5 2 nd Law of thermodynamics Motivation By experience we know the of Q
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6 2 nd Law of thermodynamics Motivation When P inside a contain is higher than P atm Naturally we know that water temp does not increase by itself
Background image of page 6
7 2 nd Law of thermodynamics Motivation By experience we know Q is generated when work W is given via a pedal Naturally we know that transferring heat to the pedal will not rotate to generate
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8 2 nd Law of thermodynamics Motivation : Power cycle :- Can η>100 ? What is the max efficiency?
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 22

Lecture21_2nd law irreversibilities-handout - ME200 :...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online