The derivations of the formulas for heat release rate calculations are revisited
based on the oxygen consumption principle. A systematic, structured, and pedagogical
approach to formulate the problem and derive the generalized formulas with fewer
assumptions is used. The operation of oxygen consumption calorimetry is treated as a
chemical flow process, the problem is formulated in matrix notation, and the
associated material balances using the tie component concept commonly used in
chemical engineering practices are solved. The derivation procedure described is
intuitive and easy to follow. Inclusion of other chemical species in the
measurements and calculations can be easily implemented using the generalized
framework developed here.
Detailed Derivations of Formulas for Heat Release Rate Calculations Revisited: A
Pedagogical and Systematic Approach