An atmospheric water generation system composed of a Peltier unit, a heat-collecting silica gel chamber, and a simulated thermal storage tank was created. Through experiments and theoretical investigations of each component, modeling was performed. In the assessment of the model's validity, a tendency was observed where the estimated temperatures at each location were close to the measured values. The estimation of the condensed water volume was improved to about 25% relative error, and the simulated therma l storage tank, which had the highest approximation accuracy, achieved an outlet temperature estimation with a precision of -1% to 2%.