Thermal environment measurement and simulation in data center

Presents the evaluation indexes of the thermal environment in data centers including rack cooling index（RCI）, return temperature index（RTI）, supply heat index（SHI） and return heat index（RHI）. Calculates RCI, RTI, SHI and RHI of a data center with open channel by the field test and simulation. The results show that reference evaluation results of the four thermal environment indexes are the same and RTI evaluation value is poor, which indicates the phenomena of bypass or recirculation flow in the experiment room with open channel. But RTI is greatly improved from 58% under opening channel condition to 95% when closing the cold channel.