数据机房对流辐射耦合换热空调系统冷却效果影响研究OA

[Purposes]It is meaningful to solve the local hot spot problem generated by high-tem-perature components inside cabinet server and at the same time to reduce the energy consumption of air conditioning system in data room.[Methods]A numerical model containing the geometry of server components was established,and the local hot spot thermal image was mitigated by radiating heat ex-change between radiant deflector plate and high-temperature component.The influencing factors of the cooling effect of cabinet server with radiation deflector plate were studied comparatively,and the heat supply index,heat return index,return air temperature index,and energy utilization coefficient were used to evaluate and analyze the thermal environment of server room;on this basis,key parame-ters such as the air supply temperature,the installation angle,and the temperature of the radiation plate of the new convection-radiation-coupled heat exchanger air-conditioning system were opti-mized.[Results]The results show that the numerical model including the geometry of server compo-nents can better reflect the airflow organization and temperature distribution inside the cabinet.The thermal environment of the server room with 45° radiation deflector plate is the best at the same air supply temperature.The air supply temperature of the new convection-radiation-coupled heat ex-changer and air conditioning system can be as high as 22℃,which is 4℃higher than that of the tradi-tional convection air conditioning system,and the power consumption of the server room air condition-ing system can be saved by 12.95%.When radiation deflector temperature rises from 16 to 21℃,the system can still meet the data room air conditioning design requirements,and the air conditioning sys-tem power consumption can be further reduced by 1.05%.