Numerical Simulation And Experimental Study Of The Thermal Environment In A Data Center

With the rapid development of information society,the data center is widely used in various fields of national economy as an important place for information processing.However,the data center is different from the other office and residential buildings,its internal IT appliances need work without a break throughout the year,not only consume a lot of power,but also need air conditioning system to remove heat generated,maintain a stable thermal environment.Therefore,it's very important to study the thermal environment of the data center to save energy consumption.Firstly,this paper briefly introduces the research status of the data center,and introduces the numerical simulation method.And it's pointed out that the research of air supply by orifice plate is insufficient,proposing that porous jump model can describe the pressure loss well through the orifice plate.Then,the experimental measurement is conducted,including air supply parameters,air return parameters,velocity and temperature of typical points,and heat generation of servers.The data measured will be used as the boundary conditions applied to the numerical simulation,and verify the accuracy of simulation results.Finally,the numerical simulation of the thermal environment of the data center is carried out,and the method of establishing the porous jump model and the rack model is studied emphatically.Through comparison of simulation results and experimental results in typical positions,the relative error rate of velocity is between 0.7%-29.1%,which is below 11.8% for temperature,the error could be caused by simplified rack model or measurement,but the change tendency with height is consistent.Thus,it's thought that the simulation results and the experimental results achieve good uniformity.The boundary conditions and orifice plate air supply model used in the simulation have certain rationality,can satisfy the needs of engineering.