Note: This simulator is an educational tool that models general fired heater behavior using simplified proportional relationships observed across a range of operating conditions. Simulator responses are calibrated against an FRNC model of an actual FIS hot oil heater design operating at design duty. However, it does not perform rigorous heat and mass balance calculations, combustion calculations, CFD analysis, or equipment-specific modeling. Results should not be used for engineering decisions. FIS offers full-scope heater simulation and performance analysis as part of our engineering study services — contact us to discuss your specific application.