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Active CPU Cooling System with Piezoelectric Actuated Droplet Generator

Published online by Cambridge University Press:  01 February 2011

Chun-Fu Lu ,
Chi-Ming Huang ,
Jinn-Cherng Yang ,
Hung -Liang Chiang ,
Chien-Chung Fu ,
Chiang-Ho Cheng  and
Chun-Jung Chen
Chun-Fu Lu
Affiliation:
transfer@itri.org.tw, National Tsing Hua University, Institute of Microelectromechanical System, 101 Sec. 2, Kuang-Fu Rd., Hsinchu, N/A, N/A, Taiwan, 886-3-5918356, 886-3-5917446
Chi-Ming Huang
Affiliation:
cmhuang@itri.org.tw, Industrial Technology Research Institute, Opto-Electronics& Systems Laboratories
Jinn-Cherng Yang
Affiliation:
OESJCY@itri.org.tw, Industrial Technology Research Institute, Opto-Electronics& Systems Laboratories, Taiwan
Hung -Liang Chiang
Affiliation:
uranus.chiang@chipright.com.tw, Industrial Technology Research Institute, Opto-Electronics& Systems Laboratories, Taiwan
Chien-Chung Fu
Affiliation:
ccfu@mx.nthu.edu.tw, National Tsing Hua University, Institute of Microelectromechanical System, Taiwan
Chiang-Ho Cheng
Affiliation:
chcheng@mail.dyu.edu.tw, Da-Yeh University, Mechanical and Automation Engineering, Taiwan
Chun-Jung Chen
Affiliation:
JRCHEN@itri.org.tw, Industrial Technology Research Institute, Opto-Electronics& Systems Laboratories, Taiwan
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Abstract

Ink jet technology is applied to the industry application of CPU cooling in this study. The PZT actuated micro-cooling device which generating the micro-scale liquid droplet is used in the CPU cooling of desktop and laptop PCs. It consists the advantages of long lifetime of operation, simple and easily manufactured of the structure with PZT actuator. Since the high latent heat transfer rate, 2260 J/g, of water droplet for the liquid-vapor phase change cooling system, it removes heat from the CPU surface effectively for over 100 W. In order to design an efficient cooling device, it is important to study the PZT material property varies after the laser cutting process and the dimensional effects of PZT actuator on the nozzle plate vibration mode. The frequency and amplitude of the voltage used to energize the PZT transducer are also important parameters that should be properly controlled in order to achieve the optimal liquid breakup conditions. It also reveals the low noise and power consumption in the CPU cooling system with some appropriate operational conditions.

Keywords

piezoelectricmicroelectro-mechanical (MEMS)ink-jet printing
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 888: Symposium V – Materials and Devices for Smart Systems II , 2005 , 0888-V03-05
Copyright
Copyright © Materials Research Society 2006

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