Information Handling System Thermal Management Enhanced By Estimated Energy States
First Claim
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1. A system for thermal management at an information handling system, the system comprising:
- plural temperature sensors operable to sense temperatures at plural locations associated with the information handling system;
a power supply operable to provide power to plural subsystems of the information handling system;
a cooling fan operable to generate a cooling airflow in the information handling system at plural airflow rates; and
a thermal manager stored in non-transitory memory and interfaced with the plural temperature sensors, the power supply and the cooling fan, the thermal manager operable to execute on a processing component to apply at least the power provided to one of the plural subsystems to estimate a thermal condition proximate the one of the plural subsystems and to apply the estimated thermal condition to set the cooling fan airflow rate.
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Abstract
Thermal conditions at processing components disposed in an information handling system are estimated by applying conservation of energy and component power consumption so that discrete control of information handling system exhaust temperatures is more accurately maintained. For example, a PCI backplane communications card has its power consumption estimated based upon its width so that air flow through the information handling system is adequate to meet an exhaust temperature constraint.
66 Citations
20 Claims
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1. A system for thermal management at an information handling system, the system comprising:
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plural temperature sensors operable to sense temperatures at plural locations associated with the information handling system; a power supply operable to provide power to plural subsystems of the information handling system; a cooling fan operable to generate a cooling airflow in the information handling system at plural airflow rates; and a thermal manager stored in non-transitory memory and interfaced with the plural temperature sensors, the power supply and the cooling fan, the thermal manager operable to execute on a processing component to apply at least the power provided to one of the plural subsystems to estimate a thermal condition proximate the one of the plural subsystems and to apply the estimated thermal condition to set the cooling fan airflow rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for thermal management at an information handling system, the method comprising:
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monitoring plural temperature sensors disposed in the information handling system; monitoring power applied to plural subcomponents in the server information handling system; commanding airflow through the information handling system housing at a first airflow rate; and applying at least one of the plural temperatures, the power applied to one of the plural subcomponents and the first airflow rate to determine a thermal condition at a discrete location in the information handling system, the discrete location lacking a temperature sensor. - View Dependent Claims (11, 12, 13, 14)
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15. An information handling system comprising:
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a housing; a cooling fan disposed in the housing and operable to generate a cooling airflow at selectable airflow rates; plural temperature sensors operable to detect temperatures at plural locations associated with the housing; plural subsystems disposed in the housing and operable to cooperate to process information, at least some of the plural subsystems lacking a temperature sensor; a power supply operable to provide power to the plural subsystems; and a thermal manager interfaced with the plural temperature sensors, the power supply and the cooling fan, the thermal manager operable to estimate a thermal condition proximate the one of the plural subsystems lacking a temperature sensor and to apply the estimated thermal condition to set the cooling fan airflow rate. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification