New approach to system server air flow/thermal design development, validation and advancement in green fan performance

Abstract

Increasing thermal demands of high-end servers require increased performance of air-cooling systems in order to meet industry requirements. Increased air cooling performance will be attained through efficient distribution of the air flow to multiple electronic modules and improved aerodynamic power conversion efficiency of the server air movers and incorporating inter-stage air flow directional control structure between tandem fans that are arranged in series air flow. A new approach is used to measure and validate air flow rates for the server's individual electronic modules. The new approach is intended to improve the accuracy of the air flow measurement and simplify the in-situ air flow measurement process, allowing reduced instrumentation cost and reduced time required to develop and validate the server air flow design.