Air conditioning system used for workshop stations and control method thereof

The invention discloses an air conditioning system used for workshop stations. The air conditioning system comprises an evaporative condensing refrigerating unit, a refrigerating water pump and a plurality of air-cooled heat exchangers arranged on all the workshop working stations. A refrigerating cycle established through the refrigerating water pump exists between the air-cooled heat exchangers and the evaporative condensing refrigerating unit. The air conditioning system further comprises a plurality of temperature and humidity sensors arranged on the workshop working stations correspondingly, temperature sensors arranged at a refrigerated water inlet and a refrigerated water outlet of the evaporative condensing refrigerating unit correspondingly, electric regulating water valves used for regulating refrigerated water flow rates of all the air-cooled heat exchangers correspondingly, a refrigerating water pump frequency converter for controlling the rotating speed of the refrigerating water pump, and a cent