Table 11 The ANOVA table for Merkel number data of CFCT using MWCNTs nanofluid.

From: Optimizing the heat transfer characteristics of MWCNTs and TiO2 water-based nanofluids through a novel designed pilot-scale setup

Source

Sum of squares

df

Mean square

F-value

p-value

Model

65.61

6

10.93

885.33

 < 0.0001

A-concentration

0.1805

1

0.1805

14.61

0.0009

B-flow rate

2.10

1

2.10

170.13

 < 0.0001

AB

0.1170

1

0.1170

9.47

0.0055

A2

0.4661

1

0.4661

37.74

 < 0.0001

B2

0.0477

1

0.0477

3.87

0.0620

A3

0.4221

1

0.4221

34.18

 < 0.0001

B3

0.2717

22

0.0124

_

–

Residual

0.2495

18

0.0139

2.49

0.5337

Lack of fit

0.0222

4

0.0056

–

–

Pure error

65.88

28

–

–

–

Cor total

65.61

6

10.93

885.33

 < 0.0001

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