Simulation And Study On Air Conditioning Design Of Large Computer Room

As the continuous development of the information society, the communicationsindustry is unprecedented hot. As the basis of the communications industry,communications room of the building was became a vital position. Over the past decade,the server grow6times, Storage to grow69times. From2001to the present, theaverage energy consumption of the server quadrupled, data center energy consumptiondoubling every five years,66-73%company will expand their data center in the next12-24months, reduce costs is the most important thing in every business. In theconstruction and operation of the communication system, the energy consumption of airconditioning systems account for30%to45%of total energy consumption, and theproportion gradually increasing, increasingly high-power density on thecommunications equipment of data room more and more stringent. Therefore, how toreduce the energy consumption of the data room has aroused the concern and attentionof owners, designers and researchers.In this paper, a cloud computing center in Chongqing as the research object,conducting research with large computer room air conditioning system design. Secondto four chapters as the main chapter.The first chapter was introduced on the current state of the computer room, thedevelopment and the research situation, proposed research content, purpose andsignificance of this paper.The second chapter of a cloud computing center for the study, dest simulationsoftware on cloud computing center throughout the year8760hours hourly dynamicsimulation, get the Engine room cooling load, hourly load characteristics, monthlyaverage load, the monthly average loading rate, load constitute Characteristics and so on,then, analysis and discuss on the annual dynamic load characteristics. Under the outdoormeteorological parameters in Chongqing, analysis of Chongqing annual temperatureand humidity characteristics, discussing the possibility of the use of outdoor naturalsource cooling the engine room.The third chapter is the focus of this article chapter. First introduced the computerroom air conditioning design features, and proposed several commonly used computerroom air conditioning system, Introduction and description of the form of each airconditioning system, then according to the actual situation of the research projects of this article, leads to evaporative cooling technology, assumed a new air conditioningdesign, use psychrometric chart, and detailed calculations description and analysis forthis program. Than,analysis Indoor temperature and humidity in the fresh air modedynamic response, Found that most of the time, indoor temperature and humiditythroughout the year can reach room temperature and humidity of the project, Therefore,the design of the cold fresh air+hot return air operation mode can be changed to freshair operation mode, it can get better cooling effect.The last.in order to analyze theviability and economy of this program, compared traditional air conditioning programwith this program from the beginning of the equipment investment, operating cost,energy consumption,get conclusion: the operating costs of such programs as well asenergy consumption is lower than traditional computer room air conditioning program,energy-saving effect obviously.The fourth chapter, In order to understand this program in different regions ofapplicability, in the northern region, select Beijing for study compared. Beijing outdoorair utilization higher than the Chongqing region, However, due to climaticcharacteristics of the region, Need to increase the humidification or dehumidificationequipment, increasing initial investment.The fifth chapter introduces several traditional room airflow organizational forms,Including hood air, sent from the next time, the next sent back. In order to study theairflow form of the computer room air conditioning，Relative to the Traditional airflowforms，Propose a new one， used a fluid dynamics PHOENICS simulation softwaresimulated and numerical calculated new form of airflow in the project, analysis from theresulting temperature field and wind velocity field. Optimization program based on thetemperature field and the wind velocity field problems，simulation and analysisoptimization program again,choose the best one.