Lecture_4.2_Heat_Tr - AE202 Lecture 1.9 Heat Transfer Reading MEEB 10th Edition o Chapter 7 o Appendix E Heat Transfer Unit of Measurement Rate of

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AE202 Name______________________ Lecture 1.9 Heat Transfer Date_______________________ Reading: MEEB 10 th Edition o Chapter 7 o Appendix E Heat Transfer Unit of Measurement - Rate of heat transfer 1. English _________ 2. SI (Watts) Convention o Direction of heat flow Objective o ________________heat transfer by increasing resistance Assumptions 1. 2. Definitions Conductivity (k) Amount of heat (BTU/hr) that flows through: in an hour, one square foot of material, one inch thickness, subjected to one degree temperature difference. Conductance (c) Amount of heat flow for a given thickness of material Resistance (R) Reciprocal of conductance [R=1/c] Resistance per inch (R) Reciprocal of conductivity [R=1/k] R value increases with thickness
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Units Conductivity (k) ________________________ Conductance (c) ________________________ Resistance (R=1/c) ________________________ Resistance per inch (R=1/k) ________________________ Assembly Increase ________________ Decrease _______________ Temperature at the center =
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This note was uploaded on 04/01/2008 for the course A E 202 taught by Professor Ling,mosesdf during the Fall '07 term at Pennsylvania State University, University Park.

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Lecture_4.2_Heat_Tr - AE202 Lecture 1.9 Heat Transfer Reading MEEB 10th Edition o Chapter 7 o Appendix E Heat Transfer Unit of Measurement Rate of

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