This application relates to an indirect evaporative cooling
system and control method, comprising a
heat exchanger including a first air inlet, a first air outlet, a second air inlet, a second air outlet, and a heat exchange core, the heat exchange core including a first
airflow channel and a second
airflow channel; an internal circulation fan coil
assembly, located on one side of the first air outlet, including a first surface cooler and a first fan; and an external circulation fan coil
assembly, located on one side of the second air outlet; a cold source
storage tank connected to the input end of the first surface cooler, the cold source
storage tank containing insulation material, used to store external cold sources at night or during off-peak hours and to release the stored cold sources to the first surface cooler for supplemental cooling during
daytime or peak hours via connecting pipelines; and a spray
assembly, located on one side of the second air inlet, used to cool the
airflow entering the
heat exchanger through the second air inlet. This application has the effect of reducing the
operating energy consumption of the indirect evaporative cooling
system.