0
Research Papers

Performance Assessment of Single and Multiple Jet Impingement Configurations in a Refrigeration-Based Compact Heat Sink for Electronics Cooling

[+] Author and Article Information
Pablo A. de Oliveira

POLO—Research Laboratories for Emerging
Technologies in Cooling and Thermophysics,
Department of Mechanical Engineering,
Federal University of Santa Catarina,
Florianópolis 88040-900, Santa Catarina, Brazil

Jader R. Barbosa, Jr.

POLO—Research Laboratories for Emerging
Technologies in Cooling and Thermophysics,
Department of Mechanical Engineering,
Federal University of Santa Catarina,
Florianópolis 88040-900, Santa Catarina, Brazil
e-mail: jrb@polo.ufsc.br

1Corresponding author.

Contributed by the Electronic and Photonic Packaging Division of ASME for publication in the JOURNAL OF ELECTRONIC PACKAGING. Manuscript received January 25, 2017; final manuscript received April 24, 2017; published online June 28, 2017. Assoc. Editor: Dong Liu.

J. Electron. Packag 139(3), 031005 (Jun 28, 2017) (11 pages) Paper No: EP-17-1008; doi: 10.1115/1.4036817 History: Received January 25, 2017; Revised April 24, 2017

The performance of a novel impinging two-phase jet heat sink operating with single and multiple jets is presented and the influence of the following parameters is quantified: (i) thermal load applied on the heat sink and (ii) geometrical arrangement of the orifices (jets). The heat sink is part of a vapor compression cooling system equipped with an R-134a small-scale oil-free linear motor compressor. The evaporator and the expansion device are integrated into a single cooling unit. The expansion device can be a single orifice or an array of orifices responsible for the generation of two-phase jet(s) impinging on a surface where a concentrated heat load is applied. The analysis is based on the thermodynamic performance and steady-state heat transfer parameters associated with the impinging jet(s) for single and multiple orifice tests. The two-phase jet heat sink was capable of dissipating cooling loads of up to 160 W and 200 W from a 6.36 cm2 surface for single and multiple orifice configurations, respectively. For these cases, the temperature of the impingement surface was kept below 40 °C and the average heat transfer coefficient reached values between 14,000 and 16,000 W/(m2 K).

FIGURES IN THIS ARTICLE
<>
Copyright © 2017 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Schematic diagram of the experimental apparatus: (1) compressor inlet (suction), (2) compressor outlet (discharge), (3) condenser inlet (refrigerant side), (4) condenser outlet (refrigerant side), (5) jet cooler inlet, (6) jet cooler outlet, (7) condenser inlet (WEG side), (8) condenser outlet (WEG side), and (9) secondary evaporator inlet (not used in this study)

Grahic Jump Location
Fig. 2

Two-phase jet cooler: assembly and main components [55,56]

Grahic Jump Location
Fig. 3

Orifice plenum: (a) assembled components and (b) outer and inner orifice plates

Grahic Jump Location
Fig. 4

Dimensions of the threaded screw (nozzle): (a) size and (b) orifice diameters (in μm)

Grahic Jump Location
Fig. 5

Assembly of the skin heater (with the Teflon base plate) and copper block in the insulation and drainage unit

Grahic Jump Location
Fig. 6

(a) Copper block and (b) cross-sectional view of the copper block (RTD's plane, dimensions in millimeters)

Grahic Jump Location
Fig. 7

Internal orifice plenum showing the (a) single and (b)–(d) multiple orifice configurations: (a) single jet, (b) multiple jet array #1, (c) multiple jet array #2, and (d) multiple jet array #3

Grahic Jump Location
Fig. 8

Coefficient of performance as a function of the applied heat load (cooling capacity) for single and multiple jet impingement cooling

Grahic Jump Location
Fig. 9

Compressor power consumption as a function of the applied heat load (cooling capacity) for single and multiple jet impingement cooling

Grahic Jump Location
Fig. 10

Saturation temperatures (evaporating and condensing) as a function of the applied heat load (cooling capacity) for single and multiple jet impingement cooling (error bars not shown as the temperature expanded uncertainties are smaller than the symbol size, as seen in Table 1)

Grahic Jump Location
Fig. 11

Refrigerant mass flow rate as a function of the applied heat load (cooling capacity) for single and multiple jet impingement cooling

Grahic Jump Location
Fig. 12

Surface temperature as a function of the applied heat load (cooling capacity) for single and multiple jet impingement cooling (error bars not shown as the temperature expanded uncertainties are smaller than the symbol size, as seen in Table1)

Grahic Jump Location
Fig. 13

Heat transfer coefficient as a function of the applied heat load (cooling capacity) for single and multiple jet impingement cooling

Grahic Jump Location
Fig. 14

Vapor mass quality at the outlet of the jet cooler (x6) as a function of the applied heat load (cooling capacity) for single and multiple jet impingement cooling

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In