A preliminary analysis of spray booth temperature control using PWM modulation with dynamic trigger period

The authors present a concept of the temperature control system for a spray booth equipped with a single burner. The control system uses PWM modulation with dynamic trigger time periods. The paper presents the results of temperature control simulations for different conditions of external air temperature as well as the analysis of external air temperature and trigger time period impact on temperature fluctuation amplitudes inside the spray booth. A dynamic trigger period will minimize the number of burner ignitions with acceptable fluctuation amplitudes of temperature. The minimization of the number of burner ignitions will increase the life time of a burner and decrease the fuel consumption used to start a burner.