In: Chemistry
As inventor claims that there is a steady flow device which can process an ideal gas at constant temperature and pressure and produce useful work. Would you believe this claim??
yes . i belive this claim . this claim is reasonable.
explanation :
we know that at constant pressure and temperature the parameter used in thermodynamic gibbs free energy.
that means the energy stored in a system at constant pressure and temperature is called gibbs free energy.
The amount of useful work which may be extracted from a thermodynamic system is determined by the second law of thermodynamics. Under many practical situations this can be represented by the thermodynamic availability, or Exergy, function.
Two important cases are:
(1) in thermodynamic systems where the temperature and volume are held constant, the measure of useful work attainable is the Helmholtz free energy function; and
(2) in systems where the temperature and pressure are held constant, the measure of useful work attainable is the Gibbs free energy
decrease in free energy of device is equal to work done by the device
-
G = W