EXPERIMENTAL INVESTIGATION OF NON-UNIFORM HEATING ON FLOW BOILING INSTABILITIES IN A MICROCHANNELS BASED HEAT SINK

D. Bogojevic; K. Sefiane; Anthony Walton; H. Lin; G. Cummins; D. B. R. Kenning; T. G. Karayiannis

EXPERIMENTAL INVESTIGATION OF NON-UNIFORM HEATING ON FLOW BOILING INSTABILITIES IN A MICROCHANNELS BASED HEAT SINK

D. Bogojevic, K. Sefiane, Anthony Walton, H. Lin, G. Cummins, D. B. R. Kenning, T. G. Karayiannis

School of Engineering

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

Abstract / Description of output

Two-phase flow boiling in microchannels is one of the most promising cooling technologies able to cope with high heat fluxes generated by the next generation of central processor units (CPU). If flow boiling is to be used as a thermal management method for high heat flux electronics it is necessary to understand the behaviour of a non-uniform heat distribution, which is typically the case observed in a real operating CPU. The work presented is an experimental study of two-phase boiling in a multi-channel silicon heat sink with non-uniform heating, using water as a cooling liquid. Thin nickel film sensors, integrated on the back side of the heat sinks were used in order to gain insight related to temperature fluctuations caused by two-phase flow instabilities under non-uniform heating. The effect of various hotspot locations on the temperature profile and pressure drop has been investigated, with hotspots located in different positions along the heat sink. It was observed that boiling inside microchannels with non-uniform heating led to high temperature non-uniformity in transverse direction.

Original language	English
Title of host publication	ICNMM 2009, PTS A-B
Place of Publication	NEW YORK
Publisher	American Society for Mechanical Engineers
Pages	59-67
Number of pages	9
ISBN (Print)	978-0-7918-4349-9
Publication status	Published - 2009
Event	7th International Conference on Nanochannels, Microchannels and Minichannels - Pohang Duration: 22 Jun 2009 → 24 Jun 2009

Conference

Conference	7th International Conference on Nanochannels, Microchannels and Minichannels
City	Pohang
Period	22/06/09 → 24/06/09

Keywords / Materials (for Non-textual outputs)

PARALLEL MICRO-CHANNELS
PRESSURE-DROP

Cite this

@inproceedings{593420da814045ddaa05325454b2b818,

title = "EXPERIMENTAL INVESTIGATION OF NON-UNIFORM HEATING ON FLOW BOILING INSTABILITIES IN A MICROCHANNELS BASED HEAT SINK",

abstract = "Two-phase flow boiling in microchannels is one of the most promising cooling technologies able to cope with high heat fluxes generated by the next generation of central processor units (CPU). If flow boiling is to be used as a thermal management method for high heat flux electronics it is necessary to understand the behaviour of a non-uniform heat distribution, which is typically the case observed in a real operating CPU. The work presented is an experimental study of two-phase boiling in a multi-channel silicon heat sink with non-uniform heating, using water as a cooling liquid. Thin nickel film sensors, integrated on the back side of the heat sinks were used in order to gain insight related to temperature fluctuations caused by two-phase flow instabilities under non-uniform heating. The effect of various hotspot locations on the temperature profile and pressure drop has been investigated, with hotspots located in different positions along the heat sink. It was observed that boiling inside microchannels with non-uniform heating led to high temperature non-uniformity in transverse direction.",

keywords = "PARALLEL MICRO-CHANNELS, PRESSURE-DROP",

author = "D. Bogojevic and K. Sefiane and Anthony Walton and H. Lin and G. Cummins and Kenning, {D. B. R.} and Karayiannis, {T. G.}",

year = "2009",

language = "English",

isbn = "978-0-7918-4349-9",

pages = "59--67",

booktitle = "ICNMM 2009, PTS A-B",

publisher = "American Society for Mechanical Engineers",

note = "7th International Conference on Nanochannels, Microchannels and Minichannels ; Conference date: 22-06-2009 Through 24-06-2009",

}

Bogojevic, D, Sefiane, K, Walton, A, Lin, H, Cummins, G, Kenning, DBR & Karayiannis, TG 2009, EXPERIMENTAL INVESTIGATION OF NON-UNIFORM HEATING ON FLOW BOILING INSTABILITIES IN A MICROCHANNELS BASED HEAT SINK. in ICNMM 2009, PTS A-B. American Society for Mechanical Engineers, NEW YORK, pp. 59-67, 7th International Conference on Nanochannels, Microchannels and Minichannels, Pohang, 22/06/09.

TY - GEN

T1 - EXPERIMENTAL INVESTIGATION OF NON-UNIFORM HEATING ON FLOW BOILING INSTABILITIES IN A MICROCHANNELS BASED HEAT SINK

AU - Bogojevic, D.

AU - Sefiane, K.

AU - Walton, Anthony

AU - Lin, H.

AU - Cummins, G.

AU - Kenning, D. B. R.

AU - Karayiannis, T. G.

PY - 2009

Y1 - 2009

N2 - Two-phase flow boiling in microchannels is one of the most promising cooling technologies able to cope with high heat fluxes generated by the next generation of central processor units (CPU). If flow boiling is to be used as a thermal management method for high heat flux electronics it is necessary to understand the behaviour of a non-uniform heat distribution, which is typically the case observed in a real operating CPU. The work presented is an experimental study of two-phase boiling in a multi-channel silicon heat sink with non-uniform heating, using water as a cooling liquid. Thin nickel film sensors, integrated on the back side of the heat sinks were used in order to gain insight related to temperature fluctuations caused by two-phase flow instabilities under non-uniform heating. The effect of various hotspot locations on the temperature profile and pressure drop has been investigated, with hotspots located in different positions along the heat sink. It was observed that boiling inside microchannels with non-uniform heating led to high temperature non-uniformity in transverse direction.

AB - Two-phase flow boiling in microchannels is one of the most promising cooling technologies able to cope with high heat fluxes generated by the next generation of central processor units (CPU). If flow boiling is to be used as a thermal management method for high heat flux electronics it is necessary to understand the behaviour of a non-uniform heat distribution, which is typically the case observed in a real operating CPU. The work presented is an experimental study of two-phase boiling in a multi-channel silicon heat sink with non-uniform heating, using water as a cooling liquid. Thin nickel film sensors, integrated on the back side of the heat sinks were used in order to gain insight related to temperature fluctuations caused by two-phase flow instabilities under non-uniform heating. The effect of various hotspot locations on the temperature profile and pressure drop has been investigated, with hotspots located in different positions along the heat sink. It was observed that boiling inside microchannels with non-uniform heating led to high temperature non-uniformity in transverse direction.

KW - PARALLEL MICRO-CHANNELS

KW - PRESSURE-DROP

UR - http://www.scopus.com/inward/record.url?scp=77952948118&partnerID=8YFLogxK

M3 - Conference contribution

SN - 978-0-7918-4349-9

SP - 59

EP - 67

BT - ICNMM 2009, PTS A-B

PB - American Society for Mechanical Engineers

CY - NEW YORK

T2 - 7th International Conference on Nanochannels, Microchannels and Minichannels

Y2 - 22 June 2009 through 24 June 2009

ER -

EXPERIMENTAL INVESTIGATION OF NON-UNIFORM HEATING ON FLOW BOILING INSTABILITIES IN A MICROCHANNELS BASED HEAT SINK

Abstract / Description of output

Conference

Keywords / Materials (for Non-textual outputs)

Other files and links

Fingerprint

Boiling and condensation in Microchannels (EP/D500109/1)

Cite this

EXPERIMENTAL INVESTIGATION OF NON-UNIFORM HEATING ON FLOW BOILING INSTABILITIES IN A MICROCHANNELS BASED HEAT SINK

Abstract / Description of output

Conference

Keywords / Materials (for Non-textual outputs)

Other files and links

Fingerprint

Projects

Boiling and condensation in Microchannels (EP/D500109/1)

Cite this