Table 1

Thermal conductivity values

Sl.no.

Base fluid

Nanoparticle

Avg particle size (nm)

Conc. (vol.%)

Sonication time (h)

Temp. (°C)

Enhancement

Method of measurement

Uncertainty %


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


Comparison of thermal conductivity values obtained using transient and steady-state measurement techniques.

Thomas and Balakrishna Panicker Sobhan Nanoscale Research Letters 2011 6:377   doi:10.1186/1556-276X-6-377

Open Data