Dennis Alan Hansen

US Patent:

7660116, Feb 9, 2010

Filed:

Apr 21, 2008

Appl. No.:

12/107010

Inventors:

Alan Claassen - Fremont CA, US
Eric Alan Eckberg - Rochester MN, US
Dennis John Hansen - Rochester MN, US
Vinod Kamath - Raleigh NC, US
Madhusudan K. Iyengar - Woodstock NY, US
Michael Sven Miller - Raleigh NC, US
Stephen Peter Mroz - Rochester MN, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H05K 7/20

US Classification:

361696, 165 804, 361695, 454184

Abstract:

Rack assemblies and methods for cooling one or more rack-based computer systems, as well as data center configurations that utilize the rack assembly. The rack assembly comprises a rack providing support for multiple columns of heat-generating electronic devices and device fans for moving air from an air inlet side of the rack through the devices and through an air outlet side of the rack. The rack assembly also comprises a unitary door having a support frame spanning the air outlet side of the rack and hingedly coupling the door to a rear vertical edge of the rack. The door includes an air-to-liquid heat exchanger panel spanning an air outlet passage inside the support frame so that substantially all of the air passing through the air outlet must pass through the heat exchanger panel. The air outlet passage has a cross-sectional area that is substantially equal to or greater than the cross-sectional area of the multiple columns of heat-generating devices.

US Patent:

7854547, Dec 21, 2010

Filed:

Aug 7, 2007

Appl. No.:

11/834752

Inventors:

Alan Claassen - Fremont CA, US
Dennis Hansen - Rochester MN, US
Cary Huettner - Rochester MN, US
Madhusudan Iyengar - Woodstock NY, US
Roger Schmidt - Poughkeepsie NY, US
Kenneth Schneebeli - San Jose CA, US
Gerard Weber, Jr. - Saugerties NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01K 1/14
G01K 1/16
G01K 13/02
G01N 25/20

US Classification:

374 43, 374 29, 374179, 374143, 324765, 361690, 361695, 361717, 361718, 361719, 361720, 361722

Abstract:

A tool is disclosed, for measuring the important thermal characteristics of a unit of electronic equipment, which obtains air flow and temperature readings at both air inlet and air outlet openings of the unit without disturbing cable or wiring connections or otherwise interrupting device operation. The tool pressure sensing element is rotatable between detented positions to permit the tool to be used at both air inlet and air outlet openings. The tool air duct portion may be formed of separate duct portions to enable a single duct portion including the sensing instrumentation to be used with multiple duct portions that conform to electronic device air inlet and outlet openings to impart added flexibility to the tool.

US Patent:

8197124, Jun 12, 2012

Filed:

Feb 5, 2009

Appl. No.:

12/365990

Inventors:

Alan Claassen - Fremont CA, US
Dennis John Hansen - Rochester MN, US
Cary Michael Huettner - Rochester MN, US
Madhusudan K Iyengar - Woodstock NY, US
Roger R Schmidt - Poughkeepsie NY, US
Kenneth Robert Schneebeli - San Jose CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01K 17/08
G01K 13/02

US Classification:

374 29, 374 43, 374143, 361724, 361690, 454184, 3122232

Abstract:

A rack mount assembly measurement tool, for determining physical values including air flow and heat loads, includes a front assembly and a rear duct assembly that are non-intrusively and releasably mounted on the front and rear of such rack mount enclosure. Physical values are sensed at multiple vertical locations to enable a determination of overall and localized heat loads within the enclosure. Front sensor values are collected and wirelessly transmitted from the front assembly to a receiver/processor supported on the rear duct, which generates computed values that are displayed in addition to the sensed values.