| With the implementation of China’s "East Data and West Calculation" project,the number and scale of data center construction in Guizhou have shown a sharp growth trend.Data center cooling energy consumption is huge,and it is imperative to explore data center cooling energy-saving technology with Guizhou characteristics.The introduction of free cooling technology and optimization of airflow in the data center are means to reduce the energy consumption of the data center.As a newly proposed method of air supply in the data center in recent years,fan-wall air supply is often used in combination with free cooling technology.However,based on the climatic conditions of Guizhou,the fan-wall data center has been reported less.This project combines theoretical analysis,numerical simulation and experimental testing to explore the energy-saving temperature control technology of data centers in Guizhou.The research is as follows:Evaluation of the application potential of direct air-side free cooling technology in data centers in Guizhou region.By investigating the mechanism of the influence of temperature,humidity,and pollutant concentration on server operation,the factors affecting the potential of direct air-side free cooling technology were analyzed.The evaluation model of direct air-side free cooling technology suitable for Guizhou climate parameters was established,and the application time of this technology in Guizhou region throughout the year was obtained.At the same time,the humidity of outdoor air in Guizhou will have an important impact on the application potential of direct air-side free cooling technology.Analysis of temperature control characteristics and influencing factors of fan-wall data center.By building a small fan-wall data center test platform,the environmental distribution characteristics of the data center were obtained,and the influence of supply air temperature and supply air volume on the control of the data center was tested.On this basis,a numerical model of temperature control in the fan-wall data center is established,and the influence of air supply parameters and data center total power is further explored.The test and numerical results show that with the increase of air supply temperature,air supply volume and data center total power,the air temperature of the rack inlet increases linearly,exponentially and linearly,respectively.Establishment of empirical ventilation model of wind wall data room.Based on the RCIHI computer room environment assessment method,a method for optimizing the ventilation volume of the computer room when the supply air temperature and heat dissipation power change is proposed.The ventilation model enables a ventilation system in a 10 k W data center in Guizhou to save 32% of energy consumption per year. |
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