AIR-CONDITIONING CONTROL METHOD AND AIR-CONDITIONING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an air-conditioning control method and an air-conditioning system capable of constructing a facility without depending on renewal of an air conditioner to easily and inexpensively cope with not only new construction work but also repair and modification work, without injuring an advantage of a large temperature difference proportional control valve.

SOLUTION: A cold or hot water temperature of a circulation tube connected to a heat exchanger is detected to increase-control or decrease-control an amount of hot water or cold water for the cold or hot water passed through the heat exchanger by the proportional control valve so as to bring the cold or hot water temperature into a prescribed temperature. The the proportional control valve is fully closed when a lapse time of the increase-control or decrease-control comes to a prescribed time Tb. The proportional control valve is forcibly opened fully when a lapse time of the fully closed condition comes to a prescribed time Tc. The processing of the increase-control or decrease-control and the processing thereafter are repeated again when a lapse time of the fully opened condition comes to a prescribed time Td.

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