Cross-verification of thermal characterisation of a micro-cooler

Z. Kohári (1) , G. Bognár (1) , E. Kollár (1) , G. Horváth (1) , A. Poppe (1) , M. Rencz (1) , V. Székely (1)

1 Department of Electron Devices

The thermal behaviour of a micro-cooler has beeninvestigated using two different measurement methods to verifytheir feasibility. The measurement sample was a square nickelplate micro-cooler holding 128 micro-channels in radialarrangement. In our previous studies it was attached to a powertransistor which was used as a dissipator and a temperaturesensor. The thermal transient response to a dissipation step of thetransistor was recorded in the measurement. The measuredtransients (cooling curves) were transformed into structurefunctions from which the partial thermal resistancecorresponding to the cooling assembly was identified. In thecurrent study the measurement setup was completed by a heat-flux sensor in between the dissipator and the micro-cooler to beable to verify the results extracted via structure functions.

Mots clés: Thermal characterisation microchannel cooler heat-flux map

Domaines: Architectures Matérielles [cs.AR]

Z. Kohári, G. Bognár, E. Kollár, G. Horváth, A. Poppe, et al.. Cross-verification of thermal characterisation of a micro-cooler. THERMINIC 2005, Sep 2005, Belgirate, Lago Maggiore, Italy. pp.263-264. ⟨hal-00189483⟩