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Primary Equations Used in 1st Law Analysis.
Member rating: No Rating | Words: | Submitted: Mon Jun 19 2006
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Primary Equations Used in 1st Law Analysis * First Law of Thermo for a closed system * * Ideal Gas Law: P·V = m·R·T * Universal Gas Constant: ? = 8.314 kPa m3/kgmol K R = ?/MW * Heat Transfer o Conduction (Fourier Biot Law) Q = k·A·?T/L o Convection (Newton's Law of Cooling) Q = h·A·(Tsurface-Tfluid) o Radiation: Q = ?·?·A·(T4 - Tsur4) Stefan Boltzman Constant: ? = 5.67x10-8 W/m2·K4 * Work: * Energy E = U + PE + KE + ....... o Internal Energy u = u (T,P) u = u (T) o Potential Energy PE = m·g·z o Kinetic Energy KE = 1/2·m·?2 o Enthalpy h = u + Pv * Specific Heat o Constant Volume Specific Heat Cv = ?u/?T|V Cv = du/dT o Constant Pressure Specific Heat CP = ?h/?T|P CP = dh/dT \ o Specific Heat Relationships CP = CV + R k = CP/CV> Temperature Conversions T(R) = T(oF) + 460 T(K) = T(oC) + 273 T(R) =1.8·T(K) * Pressure Conversions P(abs) = P(gauge) + P(atm) 1 atm = 101 kPa = 14.7 psia> Alternate forms of the ideal...
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