The general form quoted for a mass balance is The mass that enters a system must by conservation of mass either leave the system or accumulate within the system. Closed and Open Systems. Equation 931 is considered a general material balance equation because it can be applied to an oil reservoir with a gas cap and an aquifer.
Reactor Calculations - The General Mass Balance Equation.
The big nasty energy balance equation at the bottom is the one we are most interested in right now. At steady state-Differentiating that gives-For single reactions in terms of conversion-The differential form of the PFR mole balance is-The integral form is-. The general form quoted for a mass balance is The mass that enters a system must by conservation of mass either leave the system or accumulate within the system. Displaystyle mathrm Input mathrm Output mathrm Accumulation.