| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioning system in which it is possible to change over between a direct outdoor air cooling system effectively utilizing also evaporation heat of water through vaporization type humidification, an indirect outdoor air cooling system with a piping configuration facilitating performing a simultaneous operation with a freezer, and a hybrid system in which both systems are mixed.SOLUTION: An air conditioning system performs a changing-over control operation, in response to an outdoor air condition, for one of a direct outdoor air cooling operation for directly introducing outdoor air into a space to be air-conditioned through an outdoor air passage; an indirect outdoor air cooling operation for connecting a tight-sealed outdoor air cooling exclusive cooling tower and a tight-sealed outdoor air cooling operation and freezer operation cooling tower in series, converting the outdoor air to cold water and indirectly utilized; a hybrid outdoor air cooling operation in which the direct outdoor air cooling operation is combined with the indirect outdoor air cooling operation; and a freezer single operation for supplying cold water generated at a freezer to a cold water coil.SELECTED DRAWING: Figure 1 |
