The coefficient of thermal conductivity of glycerin solution was measured by the transient hotline method

in which the concentration was 10%

20%

30%

40%

50% respectively with the SiO2 nano powder. And the relationship of thermal conductivity with nano content

concentration of glycerin solution and measuring temperature was investigated. The results indicated that

with the increase of the nano-particles` additional amount(0.5g/L-1g/L)

glycerin solution coefficient of thermal conductivity increase; when the glycerol concentration increased from 10% to 50%

the thermal conductivity increased from 0.4% to 6.8%; and the nano-cryoprotectant thermal conductivity decreases with decreasing temperature. If the temperature is lower than 260K

nanoparticles had no effect on the thermal conductivity of nano-cryoprotectant.