Calculation method of minimum fresh air rate for temperature and humidity independent control system

Based on the analysis of general ventilation equation and comparison of measured and calculation data, verifies the correctness of the equation applied to calculation of indoor humidity ratio. Applies the equation to calculation of minimum fresh air rate for temperature and humidity independent control system. By introducing a new design parameter of pre-dehumidification time，remedies the deficiency in the original calculation method of minimum fresh air rate. Through the data comparison, analyses the impact of pre-dehumidification time and supply air humidity ratio on the minimum fresh air rate. Considers that can the optimal design of temperature and humidity independent control system be achieved only by an overall consideration of minimum fresh air volume, pre-dehumidification time and supply air humidity ratio.