As White: Simulation of Domestic Boiler Control
نویسنده
چکیده
A simple simulation using SIMULINK is presented to model the thermal/control behaviour of a domestic gas boiler. The simulation was the first step in a research programme to investigate the efficacy of control using an oxygen sensor. A brief review of boiler control is used to outline current practice and research developments. Ratio control in several forms has been investigated. Performance improvements using control incorporating an Oxygen sensor are examined. These indicate that a modest fuel saving of the order of 5% is possible from the addition of the sensor to the control loop. The performance of the sensor is insensitive to small changes in position and to a 10% variation in the time constant of the sensor. The fuel air ratio varies throughout the heating cycle with only a small period when either system achieves accurate control Keywords-Boiler contr; ratio control; oxygen sensor; SIMULINK; PID control
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