Energy Balance Algorithm for CSTR Design

1
Energy Balance Algorithm for CSTR Design Figure
8-13, p525526 revised
Mole Balance Energy Balance
Specifications 2 equations 2 unknowns
Specify V, find T and X
Specify X,find T and V
Specify T, find X and V

• Excel solver or POLYMATH nonlinear equation
  solver
• B. Graphical Solution of X vs T
• C. Graphical solution of Qremoved, Qgenerated
  vs. T

Determine T Liquids 1) Calculate T from energy
balance 2) Calculate k given T Gases 1)
Estimate T by assuming ?Hrxn and Cp are
constant 2) Use Excel solver or Polymath
nonlinear Equations solver (NLE) to solve for T.
Determine V from mole balance
Calculate X (EB) Calculate V