A refrigerated and air conditioning system with its cold-energy storing method

This invention discloses a refrigerated and air conditioning system and its cold energy storage method. The design includes at least one refrigerated device, one expansion valve, one liquid receiver, one control valve, one medium container and one air conditioning equipment. There is an evaporating coil in its medium container, it allows the energy storing medium in the trough and the refrigerant that goes through the coil to exchange temperature for the purpose of storing cold energy. Then with the control valve one can adjust the circulation between refrigerant and energy storing medium, which enables the excessive cold energy to be preserved when the main refrigerated system is idled; therefore, the cold energy can be used efficiently for the air conditioning system through the energy storing medium.