Identifying and quantifying energy savings on fired plant using low cost modelling techniques

► Furnace models based on the zone method for radiation calculation are described. ► Validated steady-state and transient models have been developed. ► We show how these simple models can identify the best options for saving energy. ► High emissivity coatings predicted to give performance enhancement on a fired heater. ► Optimal heat recovery strategies on a steel reheating furnace are predicted.