Solid-State Refrigeration Based on the Electrocaloric Effect for Electronics Cooling

被引:77
作者
Ju, Y. Sungtaek [1 ]
机构
[1] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA
关键词
electronics cooling; thermal analysis; MEMS; SILICON; FABRICATION; CONVERSION;
D O I
10.1115/1.4002896
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Subambient temperature operations of advanced semiconductor devices offer many benefits, including improved reliability, reduced leakage currents, and enhanced signal to noise ratios. We discuss a new design concept for compact solid-state refrigerators based on the electrocaloric (EC) effect. The EC refrigerators are attractive because they may approach the Carnot efficiency more closely than Peltier coolers, which involve intrinsically irreversible processes. To address parasitic losses and other practical considerations that limit the actual performance of EC coolers, we incorporate laterally interdigitated electrode arrays with high effective thermal conductivity and switchable thermal interfaces with high switching ratios and high off-state thermal resistance. Numerical simulations are used to quantify the impact of various design parameters and the expected performance of the module, focusing in particular on the heat diffusion time and RC thermal time constant. Based on the material properties reported in the literature, we project that cooling power densities > 10 W/cm(2) may be achieved across Delta T of the order of 10 K at coefficient of performance (COP) > 10. The present work motivates further experimental studies to develop advanced electrocaloric materials and fabricate/test cooling modules to assess the feasibility of their practical application. [DOI: 10.1115/1.4002896]
引用
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页数:6
相关论文
共 20 条
[1]   A thick silicon dioxide fabrication process based on electrochemical trenching of silicon [J].
Barillaro, G ;
Diligenti, A ;
Nannini, A ;
Pennelli, G .
SENSORS AND ACTUATORS A-PHYSICAL, 2003, 107 (03) :279-284
[2]   Fabrication of high aspect ratio ferroelectric microtubes by vacuum infiltration using macroporous silicon templates [J].
Bharadwaja, S. S. N. ;
Olszta, M. ;
Trolier-McKinstry, S. ;
Li, X. ;
Mayer, T. S. ;
Roozeboom, F. .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2006, 89 (09) :2695-2701
[3]  
Cady W.G., 1946, PIEZOELECTRICITY, V1st
[4]   Reversible thermal interfaces based on microscale dielectric liquid layers [J].
Cha, Gilhwan ;
Ju, Y. Sungtaek .
APPLIED PHYSICS LETTERS, 2009, 94 (21)
[5]   SIZE-INDUCED DIFFUSE PHASE-TRANSITION IN THE NANOCRYSTALLINE FERROELECTRIC PBTIO3 [J].
CHATTOPADHYAY, S ;
AYYUB, P ;
PALKAR, VR ;
MULTANI, M .
PHYSICAL REVIEW B, 1995, 52 (18) :13177-13183
[6]   Evaluation of contacts for a MEMS thermal switch [J].
Cho, J. ;
Richards, C. ;
Bahr, D. ;
Jiao, J. ;
Richards, R. .
JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 2008, 18 (10)
[7]   Electrocaloric devices based on thin-film heat switches [J].
Epstein, Richard I. ;
Malloy, Kevin J. .
JOURNAL OF APPLIED PHYSICS, 2009, 106 (06)
[8]  
GHOSHAL US, 2003, Patent No. 6595004
[9]   Hydrothermal growth of periodic, single-crystal ZnO microrods and microtunnels [J].
Kim, Jin Hyeok ;
Andeen, David ;
Lange, Fred F. .
ADVANCED MATERIALS, 2006, 18 (18) :2453-+
[10]   CRYOGENIC REFRIGERATION UTILIZING ELECTROCALORIC EFFECT IN PYROELECTRIC LITHIUM SULFATE MONOHYDRATE [J].
LANG, SB .
FERROELECTRICS, 1976, 11 (3-4) :519-523