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index(9) - Formulae Collection Revised 5/4/04 Contents 1...

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Unformatted text preview: Formulae Collection Revised 5/4/04 Contents 1 Introduction 1 2 Units 1 3 Properties 1 4 Formulae for substances 2 4.1 Substances with B-tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4.2 Ideal Gases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4.2.1 Ideal gasses in A.7.1 or A8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4.2.2 Ideal gasses with constant specific heats . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4.3 Solids and Liquids without B-tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5 Processes 4 5.1 Control Mass Processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5.2 Rate Equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.3 Steady State Control Volume Processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6 Cycle Devices 7 1 Introduction These formulae are not guaranteed to be complete and/or correct, though we tried to make them so. The student has the final reponsibility for knowing all formulae covered in both class lectures and homework correctly. So, if you see an error, or miss a formulae that you think was covered, (if you are mistaken about that, it could get you in trouble!), let us know immediately. This document can not be taken to the exams. 2 Units Basic SI units are kilogram (kg), meter (m), and second (s). Many derived units exist (table A.1). The book uses kPa, kJ, kW instead of the normal units Pa, J, W. Conversions may be needed (table A.1) Definitions (table A.1): 1 bar = 10 5 Pa. 1 atm = 101,325 Pa. 1 Absolute temperature (required in most formulae and some tables): add 273.15 to convert Centrigrade into Kelvin, substract 273.15 to convert Kelvin into centrigrade. However, temperature differences are the same in Kelvin as in Centrigrade; the two temperatures in the difference do not need to be converted. 3 Properties The intensive specific properties are lowercase, the corresponding extensive properties are uppercase: v = V m u = U m h = H m s = S m V = mv U = mu H = mh S = ms Definitions of enthalpy and entropy: h u + pv s integraldisplay ref parenleftbigg q T parenrightbigg rev Specific volume and density: v = 1 Pressure and force: F = pA Static pressure differences versus height H (height also indicated by Z ) differences: p A- p B =- g ( H A- H B ) Number of kilomoles: n = m M where M is the molecular mass (table A.5.) 4 Formulae for substances How you treat a substance depends on the type of substance....
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This note was uploaded on 07/09/2011 for the course EGN 5456 taught by Professor Dommelen during the Spring '09 term at FSU.

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index(9) - Formulae Collection Revised 5/4/04 Contents 1...

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