Parameter estimation for lumped capacitance modeling of crah units during chilled water interruption

Hamza Salih Erden; H. Ezzat Khalifa

doi:10.1115/IPACK2015-48430

Parameter estimation for lumped capacitance modeling of crah units during chilled water interruption

Hamza Salih Erden, H. Ezzat Khalifa

Syracuse University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

5 Citations (Scopus)

Abstract

Lumped capacitance models have been introduced to study transient thermal response of data centers. Chilled water interruption of a Computer Room Air Handling (CRAH) unit is one of several failure scenarios of data center cooling infrastructures. In such a scenario, predicting the transient thermal response of the CRAH unit depends requires the determination of the CRAH lumped capacitance model parameters: The thermal capacitance (thermal mass) and the time constant. In this paper, we propose an experimental methodology to extract sufficient information for the lumped capacitance modeling of CRAH units. The method requires measurements of inlet and exit air temperature, air flow rate and CRAH fan power. If the chilled water supply to a CRAH unit is intentionally interrupted in a data center with multiple redundant CRAH units, sufficient information to estimate the CRAH lumped capacitance parameters can be obtained without disturbing the data center operation.

Original language	English
Title of host publication	Thermal Management
Publisher	American Society of Mechanical Engineers
ISBN (Electronic)	9780791856888
DOIs	https://doi.org/10.1115/IPACK2015-48430
Publication status	Published - 2015
Externally published	Yes
Event	ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels - San Francisco, United States Duration: 6 Jul 2015 → 9 Jul 2015

Publication series

Name	ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels
Volume	1

Conference

Conference	ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels
Country/Territory	United States
City	San Francisco
Period	6/07/15 → 9/07/15

Bibliographical note

Publisher Copyright:
Copyright © 2015 by ASME.

Access to Document

10.1115/IPACK2015-48430

Cite this

Erden, H. S., & Khalifa, H. E. (2015). Parameter estimation for lumped capacitance modeling of crah units during chilled water interruption. In Thermal Management (ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels; Vol. 1). American Society of Mechanical Engineers. https://doi.org/10.1115/IPACK2015-48430

Erden, Hamza Salih ; Khalifa, H. Ezzat. / Parameter estimation for lumped capacitance modeling of crah units during chilled water interruption. Thermal Management. American Society of Mechanical Engineers, 2015. (ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels).

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title = "Parameter estimation for lumped capacitance modeling of crah units during chilled water interruption",

abstract = "Lumped capacitance models have been introduced to study transient thermal response of data centers. Chilled water interruption of a Computer Room Air Handling (CRAH) unit is one of several failure scenarios of data center cooling infrastructures. In such a scenario, predicting the transient thermal response of the CRAH unit depends requires the determination of the CRAH lumped capacitance model parameters: The thermal capacitance (thermal mass) and the time constant. In this paper, we propose an experimental methodology to extract sufficient information for the lumped capacitance modeling of CRAH units. The method requires measurements of inlet and exit air temperature, air flow rate and CRAH fan power. If the chilled water supply to a CRAH unit is intentionally interrupted in a data center with multiple redundant CRAH units, sufficient information to estimate the CRAH lumped capacitance parameters can be obtained without disturbing the data center operation.",

author = "Erden, {Hamza Salih} and Khalifa, {H. Ezzat}",

note = "Publisher Copyright: Copyright {\textcopyright} 2015 by ASME.; ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels ; Conference date: 06-07-2015 Through 09-07-2015",

year = "2015",

doi = "10.1115/IPACK2015-48430",

language = "English",

series = "ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels",

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Erden, HS & Khalifa, HE 2015, Parameter estimation for lumped capacitance modeling of crah units during chilled water interruption. in Thermal Management. ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels, vol. 1, American Society of Mechanical Engineers, ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels, San Francisco, United States, 6/07/15. https://doi.org/10.1115/IPACK2015-48430

Parameter estimation for lumped capacitance modeling of crah units during chilled water interruption. / Erden, Hamza Salih; Khalifa, H. Ezzat.
Thermal Management. American Society of Mechanical Engineers, 2015. (ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Erden, Hamza Salih

AU - Khalifa, H. Ezzat

PY - 2015

Y1 - 2015

N2 - Lumped capacitance models have been introduced to study transient thermal response of data centers. Chilled water interruption of a Computer Room Air Handling (CRAH) unit is one of several failure scenarios of data center cooling infrastructures. In such a scenario, predicting the transient thermal response of the CRAH unit depends requires the determination of the CRAH lumped capacitance model parameters: The thermal capacitance (thermal mass) and the time constant. In this paper, we propose an experimental methodology to extract sufficient information for the lumped capacitance modeling of CRAH units. The method requires measurements of inlet and exit air temperature, air flow rate and CRAH fan power. If the chilled water supply to a CRAH unit is intentionally interrupted in a data center with multiple redundant CRAH units, sufficient information to estimate the CRAH lumped capacitance parameters can be obtained without disturbing the data center operation.

AB - Lumped capacitance models have been introduced to study transient thermal response of data centers. Chilled water interruption of a Computer Room Air Handling (CRAH) unit is one of several failure scenarios of data center cooling infrastructures. In such a scenario, predicting the transient thermal response of the CRAH unit depends requires the determination of the CRAH lumped capacitance model parameters: The thermal capacitance (thermal mass) and the time constant. In this paper, we propose an experimental methodology to extract sufficient information for the lumped capacitance modeling of CRAH units. The method requires measurements of inlet and exit air temperature, air flow rate and CRAH fan power. If the chilled water supply to a CRAH unit is intentionally interrupted in a data center with multiple redundant CRAH units, sufficient information to estimate the CRAH lumped capacitance parameters can be obtained without disturbing the data center operation.

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BT - Thermal Management

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Erden HS, Khalifa HE. Parameter estimation for lumped capacitance modeling of crah units during chilled water interruption. In Thermal Management. American Society of Mechanical Engineers. 2015. (ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, InterPACK 2015, collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels). doi: 10.1115/IPACK2015-48430

Parameter estimation for lumped capacitance modeling of crah units during chilled water interruption

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