11-11-Lecture

11-11-Lecture - 1 Thermal Issues ENGR 213 THERMAL...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 Thermal Issues ENGR 213 THERMAL PROPERTIES response of material to application of heat energy absorbed causes T & dimensions to increase properties heat capacity / specific heat coefficient of thermal expansion / contraction thermal conductivity thermal stresses Effects of Increasing Temp increase in atomic vibrational energy coordinated vibrations produce traveling lattice waves w/ range of freq phonon = quantum of vibrational energy ceramics, polymers increase kinetic energy of free electrons metals Atomic Vibrations HEAT CAPACITY heat capacity (C) [J/mole-K] relates energy dQ to temp change dT measures ability to contain heat two heat capacities constant pressure C p constant volume C v C p > C v dT dQ C = Other C Issues C v varies with T C v = 0 @ T = 0 Grows to about 3R with temp for many solids C v = 25 J/mole-K @ RT specific heat (c) [J/kg-K] per unit mass measurement 7 COEFFICIENT OF THERMAL...
View Full Document

This note was uploaded on 03/26/2008 for the course ENGR 213 taught by Professor Dr.stubbs during the Fall '04 term at Texas A&M.

Page1 / 22

11-11-Lecture - 1 Thermal Issues ENGR 213 THERMAL...

This preview shows document pages 1 - 8. Sign up to view the full document.

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