Developing the intelligent predetermined control method for a new temperature and humidity chamber: A Case study for rising temperature under constant relative humidity

This paper advances the Intelligent Predetermined Control Method (IPCM) to improve the energy and water consumption and the performance of the test chamber. The IPCM is composed of scheduling the optimal control path, calculating the required heat and the mass of water vapor along the path, actuating the precise heater and humidifier to meet the chamber demands. To verify the feasibility of IPCM, a case of rising temperature with constant relative humidity under no load condition is experimented. The results show that the error of relative humidity from 34 °C to 42.5 °C at constant relative humidity 48% is within ±2% and indicate that IPCM is feasible in energy and water saving and more sophisticated in precision temperature and humidity control.