We proposed a numerical analysis model of snow storage warehouse, in circulating cold-water type air conditioning systems by using stored snow. This model was evaluated by comparison with the actual equipment dates. As a result, it was confirmed that this model could generally estimate changes in a day and changes in a season on the temperature of cold-water melted snow and on the shape of snow layer. And, subjects of model analysis could be extracted. Moreover, we considered the technical subject of snow storage warehouse, from a viewpoint of numerical analysis model.