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Table 5 ANOVA results of output characteristics of a V-trough absorber plate

From: Multi-thermal performance optimization of semi-circular heat pipes integrated with various solar collector profiles

Source

DF

Heat output

Thermal resistance

Overall thermal efficiency

Adj SS

Adj MS

F value

p value

Adj SS

Adj MS

F value

p value

Adj SS

Adj MS

F value

p value

Model

7

11,729.7

1675.7

44.54

0.000

0.008606

0.001229

72.31

0.000

56.7934

8.1133

64.71

0.000

Linear

3

11,383.4

3794.5

100.86

0.000

0.008053

0.002684

157.88

0.000

52.8763

17.6254

140.57

0.000

A

1

10,736.8

10,736.8

285.39

0.000

0.006723

0.006723

395.45

0.000

34.3621

34.3621

274.06

0.000

B

1

34.5

34.5

0.92

0.350

0.001205

0.001205

70.90

0.000

0.0108

0.0108

0.09

0.773

C

1

612.0

612.0

16.27

0.001

0.000124

0.000124

7.30

0.014

18.5035

18.5035

147.58

0.000

Square

1

295.4

295.4

7.85

0.011

0.000072

0.000072

4.24

0.053

3.0960

3.0960

24.69

0.000

C*C

1

295.4

295.4

7.85

0.011

0.000072

0.000072

4.24

0.053

3.0960

3.0960

24.69

0.000

2-Way interaction

3

50.9

17.0

0.45

0.720

0.000481

0.000160

9.43

0.000

0.8211

0.2737

2.18

0.123

A*B

1

25.0

25.0

0.67

0.425

0.000038

0.000038

2.26

0.150

0.0631

0.0631

0.50

0.487

A*C

1

15.7

15.7

0.42

0.527

0.000000

0.000000

0.00

1.000

0.2700

0.2700

2.15

0.159

B*C

1

10.2

10.2

0.27

0.608

0.000443

0.000443

26.05

0.000

0.4880

0.4880

3.89

0.063

Error

19

714.8

37.6

  

0.000323

0.000017

  

2.3823

0.1254

  

Total

26

12,444.5

   

0.008929

   

59.1757

   
  1. R2 = 99.04%
  2. R2 (adjusted) = 99.18%
  3. R2 (predicted) = 98.99%