Thermal Property Measurements on Biological Materials at Subzero Temperatures

[+] Author and Article Information
Xuemei Bai, David E. Pegg

MRC Medical Cryobiology Group, University Department of Surgery, Douglas House, Trumpington Road, Cambridge CB2 2AH, U.K.

J Biomech Eng 113(4), 423-429 (Nov 01, 1991) (7 pages) doi:10.1115/1.2895422 History: Received August 01, 1990; Revised April 08, 1991; Online March 17, 2008


The self-heated thermistor technique was used to measure the thermal conductivity and thermal diffusivity of biomaterials at low temperatures. Thermal standards were selected to calibrate the system at temperatures from −10°C to −70°C. The thermal probes were constructed with a convection barrier which eliminates convection inside liquid samples of low viscosity, without affecting the conductivity and diffusivity results. Using this technique, the thermal conductivity and diffusivity of two organ perfusates (HP5 and HP5 + 2M glycerol), one kidney phantom (a low ionic strength gel), as well as rabbit kidney cortex have been measured from −10°C to −70°C.

Copyright © 1991 by The American Society of Mechanical Engineers
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