Hydraulic balance commissioning and energy saving verification of air conditioning water system in Beijing Daxing International Airport terminal

The hydraulic balance commissioning of the air conditioning water system in the core area of Beijing Daxing International Airport terminal is carried out. The consistency of the return water temperature of each air conditioning plant room before and after the commissioning and the temperature difference in typical areas are compared. The engineering example illustrates that the air conditioning water system after the hydraulic balance commissioning can show better operation performance. The energy consumption of the air conditioning system before and after the hydraulic balance commissioning of the water system in the core area in the cooling season in 2021 and 2022 is compared， it is found that the energy consumption of the system after the commissioning is reduced by about 24.9%. In addition, considering the influence of the parameters such as outdoor temperature, passenger flow and unit operation on the energy consumption of the air conditioning system, the energy consumption of the air conditioning system in the core area in August is compared. The results show that in August 2022, the energy saving rate of the air conditioning system in the core area is about 14.4%, with the energy saving rate of the terminal equipment being about 13.3% and the energy saving rate of the water pump being about 20.3%.