Table 1 |
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|
Thermal conductivity values |
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|
Sl.no. |
Base fluid |
Nanoparticle |
Avg particle size (nm) |
Conc. (vol.%) |
Sonication time (h) |
Temp. (°C) |
Enhancement |
Method of measurement |
Uncertainty % |
|
|
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|
1 |
Distilled water |
Al2O3 |
36 |
10 |
3 |
27.5-34.7 |
1.3 times |
Steady state |
2.5 |
|
2 |
Distilled water |
CuO |
29 |
6 |
3 |
34 |
1.52 times |
Steady state |
2.5 |
|
3 |
Distilled water |
Al2O3 |
28.6 |
1 |
12 |
21-51 |
2-10.8% |
Temperature oscillation |
2.7 |
|
4 |
Distilled water |
Al2O3 |
28.6 |
4 |
12 |
21-51 |
9.4-24.3% |
Temperature oscillation |
2.7 |
|
5 |
Distilled water |
CuO |
38.4 |
1 |
12 |
21-51 |
6.5-29% |
Temperature oscillation |
2.7 |
|
6 |
Distilled water |
CuO |
38.4 |
1 |
12 |
21-51 |
14-36% |
Temperature oscillation |
2.7 |
|
7 |
Distilled water |
Al2O3 |
20 |
1 |
NA |
5-50 |
10% |
SHW method |
1 |
|
8 |
Distilled water |
Al2O3 |
45 |
1 |
15 |
NA |
4.4% |
3ω method |
NA |
|
|
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|
Comparison of thermal conductivity values obtained using transient and steady-state measurement techniques. |
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|
Thomas and Balakrishna Panicker Sobhan Nanoscale Research Letters 2011 6:377 doi:10.1186/1556-276X-6-377 |
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