Research On New Heat Dissipation Technology For High Density Heat Flow Data Room

In the past 40 years of Reform and Opening,national economy of China has developed rapidly.Followed by the rapid development of computer and network technology and the explosive growth of data processing business,many social organizations and companies have established and expanded their own data centers.The ever-increasing size of the data center has led to an increase in the heat flux density of the data room and a sharp increase in energy consumption.It is urgent to solve the problem of excessive energy consumption and poor thermal environment in the data center.ANSYS software is adopted to study the high heat flux data room of a college in Changchun.The numerical simulation is used to study the phenomenon of high heat dissipation and energy consumption in the high heat flux data room firstly.Secondly,numerical simulation is carried out for the current common energy-saving renovation measures,and the transformation effect is analyzed.Finally,the heat dissipation effect and energy saving of the new heat dissipation technology in the high heat flux data room based on micro heat pipe array are analyzed by numerical simulation,and the reliability of numerical simulation is verified by experiments,also.The main conclusions are listed as follows:1.The traditional data room has poor thermal environment due to problems such as airflow organization and layout of cabinets.It is found that the max temperature difference between the cabinets can reach 30 °C,the max unevenness can reach 37.6%,and the max uneven temperature difference can reach 40%,the maximum temperature in the data room can reach 73 °C,exceeding the maximum temperature allowed by the specification of 45 °C.2.The maximum temperature difference unevenness between the cabinets can reduce to 23.6% after optimizing airflow organization and cabinet layout.The maximum temperature difference between the cabinets is reduced to 34%,and the maximum temperature in the cabinet is reduced to 50 °C.Does not meet the specification requirements.The improvement has improved the utilization level of the cold source,but it has not solved the problem of efficient heat dissipation in the high heat flux data room fundamentally.3.The heat dissipation of the high heat flux density data room based on the micro heat pipe arrays is the “active heat dissipation”,and the residual heat recovery effect is better;the maximum temperature in the data room is 39 °C,which is lower than the 45 °C in the specification;the max non-uniformity air temperature of inlet between the cabinets is 19.4%,and the temperature unevenness of the air outlet between the cabinets reaches a maximum of 39.8%.4.The micro-heat pipe arrays heat exchanger with micro heat pipe arrays as heat exchange core is used for heating fresh air in winter.Under the premise of reducing the air conditioning cooling load,the fresh air and heat load of the duty room is reduced,and according to the set conditions,the electric energy can be saved kWh every year.