Determining the flow rate of air in a computer system

Details Determining the flow rate of air in a computer system Determining the flow rate of air in a computer system

2011-05-10

2011-05-10

Wachsman, Hal D (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

C702S130000, C702S132000, C702S136000, C374S137000, C374S141000, C374S142000

Reexamination Certificate

active

07941283

ABSTRACT:
Some embodiments of the present invention provide a system that determines a flow rate of air along an airflow path in a computer system. During operation the system monitors a first temperature profile from a first temperature sensor located in a first position in the airflow path, and monitors a second temperature profile from a second temperature sensor located in a second position in the airflow path, wherein the first position is upstream in the airflow path from the second position, and wherein the first position and the second position are separated by a predetermined distance along the airflow path. Next, the system computes a cross-power spectral density based on the first temperature profile and the second temperature profile. Then, the system determines a flow rate of air in the computer system based on the cross-power spectral density.

REFERENCES:
patent: 7096147 (2006-08-01), Low
patent: 7421368 (2008-09-01), Dalton et al.
patent: 2007/0291817 (2007-12-01), Bradicich et al.
patent: 2009/0067080 (2009-03-01), Gross et al.

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