P-V-T surface of ideal gas S.J.T.U. Phase Transformation and Applications ·Single value of specific volume for every pressure and temperature ·No discontinuities ·A smooth surface ·No phase change Volume- Temperature 等容线 等温线 SJTU Thermodynamics of Materials Spring 2010 ©X.J.Jin Lecture 2 First Law llPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2010 © X. J. Jin Lecture 2 First Law II P-V-T surface of ideal gas • Single value of specific volume for every pressure and temperature • No discontinuities • A smooth surface • No phase change 等容线 等温线