Research review of air-side indirect evaporative cooling air conditioning systems in data centres
As an advanced cooling solution for data centers,the air-side indirect evapo-rative cooling air-conditioning system fully utilizes the cooling effect of water evaporation on the outdoor cold source,extends the utilization time of natural cold sources,to reduce the energy consumption of mechanical refrigeration,showing broad application pros-pects.This article summarizes the current research status and future development trends through literature review,including the structure of integrated units,the switching and control of operating modes,and the modeling and applicability analysis.Currently,the modelling approaches for integrated units mainly rely on simplified empirical formulas or rated efficiency,lacking hybrid system model with the mechanical refrigeration cycle.The operating mode switching methods are all based on static thresholds,without considering the effects of dynamic system efficiency and room temperature.The staged control strate-gies of fans,spraying water pumps,and supplementary cooling compressors cannot coor-dinate the air side and water side,which makes it difficult to realize the coupled optimiza-tion of natural and mechanical cooling sources.
data centerindirect evaporative coolingintegrated air-conditioning systemgeometric configurationoptimal control
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