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mathematical equation for first law of thermodynamics. Equation 2 should therefore be written as dU q w 3 If the work done by the system is simply mechanical ie work at expansion then w PdV where P is the pressure and dV is the infinitesimal increase in volume. The subscript v indicates a constant volume process.
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W Amount of work done. Brayton cycle or Rankine cycle. The first law in a form that involves the principle of conservation of energy more generally is.
Where DU change in internal energy of the system.
Equation 2 should therefore be written as dU q w 3 If the work done by the system is simply mechanical ie work at expansion then w PdV where P is the pressure and dV is the infinitesimal increase in volume. W Amount of work done. DeltaH DeltaE PDeltaV B. The Mathematical Equation Which Expresses The First Law Of Thermodynamics Is A.
