Information handling system thermal management enhanced by estimated energy states
First Claim
Patent Images
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 determine estimate a thermal condition of cooling airflow proximate the one of the plural subsystems and to apply the estimated thermal condition to set the cooling fan airflow rate, the one of the plural subsystems lacking a thermal sensor, the thermal condition at the discrete location derived from at least an estimated airflow temperature entering the discrete location and power consumed by a subcomponent at the discrete location, comparing the thermal condition with a thermal constraint, and in response to comparing, commanding airflow through the information handling system housing at a second airflow rate to adjust the airflow to the second airflow rate that exhausts the airflow from the discrete location at a predetermined temperature.
16 Assignments
0 Petitions
Accused Products
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.
74 Citations
18 Claims
-
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 determine estimate a thermal condition of cooling airflow proximate the one of the plural subsystems and to apply the estimated thermal condition to set the cooling fan airflow rate, the one of the plural subsystems lacking a thermal sensor, the thermal condition at the discrete location derived from at least an estimated airflow temperature entering the discrete location and power consumed by a subcomponent at the discrete location, comparing the thermal condition with a thermal constraint, and in response to comparing, commanding airflow through the information handling system housing at a second airflow rate to adjust the airflow to the second airflow rate that exhausts the airflow from the discrete location at a predetermined temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for thermal management at an information handling system, the method comprising:
-
monitoring plural temperature sensors disposed in the information handling system; monitoring power applied to plural subcomponents in the information handling system; commanding airflow through the information handling system housing at a first airflow rate; 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 of cooling airflow at a discrete location in the information handling system, the discrete location lacking a temperature sensor; and applying the thermal condition at the discrete location derived from at least an estimated airflow temperature entering the discrete location and power consumed by a subcomponent at the discrete location, comparing the thermal condition with a thermal constraint, and in response to comparing, commanding airflow through the information handling system housing at a second airflow rate to adjust the airflow to the second airflow rate that exhausts the airflow from the discrete location at a predetermined temperature. - View Dependent Claims (10, 11, 12)
-
-
13. An information handling system comprising:
-
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 determine estimate a thermal condition proximate the one of the plural subsystems lacking a temperature sensor based at least in part on one or more temperatures measured at one or more locations and power supplied to one or more of the plural subsystems and to apply the thermal condition to set the cooling fan airflow rate to achieve a predetermined temperature of the cooling airflow exiting at the one of the plural subsystems, the temperature of the cooling airflow determined based at least in part upon the thermal condition and power consumed by the one of the plural subsystems. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification