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As temperature increases toward the critical temperature, the values of v_f and v_g become more far away...

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Mechanical Engineering

Astemperature increases toward the critical temperature, the valuesof v_f and v_g become more far away from each other.

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3.9 Ratings (731 Votes)
It is because the properties of liquids saturated or subcooledare more affected by temperature than they are by pressureTo illustrate I provide you the following propertiescalculated using some examplesState 1 Pressure 100 kPa Temperature 25 CEnthalpy 1048 kJkg volume 0001003 mkgState 2 Pressure 100 kPa Temperature 10 CEnthalpy 4208 kJkg volume 0001 mkgState 3 Pressure 500 kPa Temperature 25 CEnthalpy 1052 kJkg volume 0001003 mkgState 4 Pressure 500 kPa Temperature 10 CEnthalpy 4247 kJkg volume 00010001 mkgAs you can see when the pressure was increased by 500 thespecific volume was increased by 001 and the enthalpy by lessthan 1When the temperature was increased by 15 degrees or 5 inKelvin the enthalpy more than doubled and the volume was increasedby 03 30 times more than the    See Answer
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