Comparison and analysis of energy consumption of air conditioning schemes for equipment management rooms of subway stations based on measured loads

Taking a standard subway station in a city in the hot summer and warm winter zone as an example, the annual hourly energy consumption calculation is carried out based on the measured load, and the annual operating energy consumption of small systems using the benchmark scheme with fan frequency conversion operation and the air-cooled multi-connection scheme is quantitatively compared and analysed. The research results show that both schemes can effectively alleviate the problem caused by the large deviation between the actual load and the design load. The air-cooled multi-connection scheme has more advantages than the benchmark scheme in reducing operating energy consumption. Therefore, the air-cooled multi-connected scheme is recommended as a priority for the small system air conditioning scheme for newly built subway stations. For existing subway stations that have already adopted the benchmark scheme, it is recommended to give priority to adding the fan frequency converter when carrying out energy-saving transformation. If conditions permit, it is recommended to improve the energy efficiency of the refrigeration rooms.