Exergy based evaluation of an infrastructure

• US 8,630,739 B2
• Filed: 03/14/2008
• Issued: 01/14/2014
• Est. Priority Date: 03/14/2008
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Shah, Amip J., Sharma, Ratnesh Kumar, Bash, Cullen E.
• Primary Examiner(s): Ali, Mohammad
• Assistant Examiner(s): WHITTINGTON, ANTHONY T
• Application Number:
  US12/921,524
• Publication Number:
  US 20110004349A1
• Time in Patent Office: 2,132 Days
• Field of Search: 700/275, 703/1, 432/650, 709/223
• US Class Current: 700/275
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06Q 99/00 Subject matter not provided for in other groups of this subclass
• CPC Class Codes: H05K 7/20836 Thermal management, e.g. server temperature control

Abstract

In a method of evaluating an infrastructure having a plurality of components based upon exergy loss values, exergy loss values of the components are aggregated. In addition, at least one of the components in the infrastructure is controlled based upon the aggregated exergy loss values.

Claims

1. A method of evaluating an infrastructure having a plurality of components based upon exergy loss values, said method comprising:

aggregating exergy loss values of the components;

determining whether the aggregated exergy loss values exceed target exergy loss values;

in response to the aggregated exergy loss values falling below the target exergy loss values, determining whether historical exergy loss values indicate a trend to remain below the target exergy loss values; and

in response to the historical exergy loss values trending to go above the target exergy loss values, determining whether the trend projects that the exergy loss values will exceed the target exergy loss values within a predefined time period.

2. The method according to claim 1, wherein aggregating the exergy loss values further comprises:

receiving thermodynamic property data for measuring exergy loss values of the components;

calculating exergy loss values of the components from the thermodynamic property data; and

outputting the calculated exergy loss values.

3. The method according to claim 2, wherein the infrastructure comprises a plurality of different levels of components and wherein aggregating the exergy loss values further comprises:

calculating exergy loss values of each of the plurality of different levels of components and a total exergy loss value of the infrastructure; and

outputting the calculated exergy loss values of the plurality of different levels and the total exergy loss value of the infrastructure.

4. The method according to claim 1, wherein the infrastructure comprises a plurality of different levels of components, and wherein aggregating the exergy loss values further comprises:

generating a first representation of each of the plurality of different levels of components, wherein the first representations comprise target exergy loss values of the levels of the plurality of different levels of components and generating second representations of the components within each of the plurality of different levels, wherein the second representations comprise target exergy loss values of the components within each of the plurality of levels.

5. The method according to claim 1, said method further comprising:

in response to either the aggregated exergy loss values exceeding the target exergy loss values or the trend projecting that the exergy loss values will exceed the target exergy loss values within the predefined time period, comparing the exergy loss values at each of the plurality of different levels to target exergy loss values to determine exergy loss value differences for each of the plurality of different levels, wherein the exergy loss value differences define how far the calculated exergy loss values of the levels are from the target exergy loss values.

6. The method according to claim 5, further comprising:

identifying the level of the plurality of different levels having the highest exergy value difference;

determining whether the identified level is replaceable with an equivalent level that yields a lower exergy loss value;

reallocating resources from the identified level to the equivalent level in response to the identified level being replaceable; and

re-aggregating the exergy loss values in the infrastructure.

7. The method according to claim 6, further comprising:

in response to a determination that the identified level is not replaceable, identifying the component in the identified level of components having the highest exergy value difference.

8. The method according to claim 7, further comprising:

determining whether the identified component is replaceable with an equivalent component having a lower exergy loss value difference;

reallocating resources from the identified component to the another component in response to the identified component being replaceable with the equivalent component; and

re-aggregating the exergy loss values in the infrastructure.

9. The method according to claim 7, further comprising:

in response to a determination that the identified component is not replaceable, manipulating at least one thermodynamic property of the identified component to substantially minimize the exergy loss value difference of the identified component;

determining whether a reduction in exergy loss resulting from the manipulation of the at least one thermodynamic property exceeds the exergy value difference of the identified component; and

re-aggregating the exergy loss values in the infrastructure in response to the reduction in exergy loss exceeding the exergy value difference.

10. The method according to claim 9, further comprising:

temporarily removing the identified component from a control space of the infrastructure in response to the reduction in exergy loss falling below the exergy value difference of the identified component;

identifying the level of the plurality of different levels having the second highest exergy value difference; and

determining whether the identified level having the second highest exergy value difference is replaceable with an equivalent level that yields a lower exergy loss value.

11. The method according to claim 1, wherein the infrastructure comprises a plurality of different levels of components, said method further comprising:

in response to either the aggregated exergy loss values exceeding the target exergy loss values or the trend projecting that the exergy loss values will exceed the target exergy loss values within the predefined time period, activating a signal to alert a user that the aggregated exergy loss values exceed the target exergy loss values or that the trend projects that the exergy loss values will exceed the target exergy loss values within the predefined time period.

12. A control apparatus for controlling an infrastructure based upon exergy loss values, said control apparatus comprising:

a processor; and

a memory storing machine readable instructions to cause the processor to;

aggregate exergy loss values of components in the infrastructure, wherein to aggregate the exergy loss values, the machine readable instructions cause the processor to;

generate a first representation of each of a plurality of different levels of components, wherein the first representations comprise target exergy loss values of the levels of the plurality of different levels of components;

generate second representations of the components within each of the plurality of different levels, wherein the second representations comprise target exergy loss values of the components within each of the plurality of levels; and

control at least one of the components based upon the aggregated exergy loss values.

13. The control apparatus according to claim 12, wherein the machine readable instructions are further to cause the processor to:

receive thermodynamic property data;

calculate exergy loss values of the components based upon the received thermodynamic property data; and

output the calculated exergy loss values of the components.

14. The control apparatus according to claim 12, wherein the machine readable instructions are further to cause the processor to:

generate representations of the components, wherein the representations comprise target exergy loss values of the components, and

compare the representations with the calculated exergy loss values of the components to determine exergy loss value differences of the components.

15. The control apparatus according to claim 12, wherein the machine readable instructions are further to cause the processor to:

develop control signals for one or more of the components in the infrastructure based upon the exergy value differences, wherein the output module is further to output the control signals to the one or more components.

16. The control apparatus according to claim 15, wherein the machine readable instructions are further to cause the processor to identify at least one component having the highest exergy value difference, to determine whether the at least one component is replaceable with an equivalent at least one other component, and to replace the at least one component in response to an equivalent at least one other component being available to replace the at least one component.

17. The control apparatus according to claim 16, wherein the machine readable instructions are further to cause the processor to manipulate at least one thermodynamic property of the at least one component to reduce the exergy value difference of the at least one component.

18. A non-transitory computer readable storage medium on which is embedded one or more computer programs that are to implement a method of evaluating a system having a plurality of components based upon exergy loss values, said one or more computer programs comprising a set of instructions that when executed by a processor cause the processor to:

aggregate exergy loss values of the components in the system;

determine whether the aggregated exergy loss values exceed target exergy loss values;

in response to the aggregated exergy loss values falling below the target exergy loss values, determine whether historical exergy loss values indicate a trend to remain below the target exergy loss values; and

in response to the historical exergy loss values trending to go above the target exergy loss values, determine whether the trend projects that the exergy loss values will exceed the target exergy loss values within a predefined time period.

19. The non-transitory computer readable storage medium according to claim 18, said one or more computer programs further including a set of instructions to cause the processor to:

receive thermodynamic property data for measuring exergy loss values of the components;

calculate exergy loss values of the components from the thermodynamic property data; and

output the calculated exergy loss values.