A climate control system for a building includes air conditioning systems and ventilation (HVAC) systems. The system is controlled by determining sensible cooling and heating rates using temperature differences at inlets and outlets at evaporators, as well as moisture absorption, moisture desorption, ventilation influences, human activities, and condensation at the evaporator. Humidity differences and temperature differences are determined as driving forces for moisture absorption, desorption, and temperatures and humidities of interior fabrics. The differences are obtained from a thermal circuit model. A latent cooling rate is determined using the humidity differences. The model integrates a temperature model and a humidity model for jointly predicting temperatures and humidities for operating the HVAC systems using a mass transfer process.
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