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Table 3 Comparison among models and cases in SH1 and SH2

From: Microclimate numerical simulation to obtain the minimum safe distances between a painted wood panel and the inner face of an exterior wall

Panel height

Channel width

 

Distance from panel to the ceiling

Room wall height

Minimum temperature

RH at minimum temperature in scenario SH1 (52% RH in the room)*

RH at minimum temperature in scenario SH2 (60% RH in the room)**

Average heat flux Wall = Back + inlet Air

Ti ***

Air mean vertical velocity at the channel inlet.

Channel inlet Eddy

H

s

s/h

h1

ht

Wall

Back

Front

Wall

Back

Front

Wall

Back

Front

Wall

Back

Inlet Air

Inlet Air/

Wall

Channel Inlet

Inlet

Inlet

m

mm

ratio

m

m

 °C

°C

 °C

%

%

%

%

%

%

W/m2

W/m2

W/m2

%

 °C

m/s

Y/N

Only wall 3 m height model

 0

0

0.000

0.0

3

12.6

82.5

95.2

  

66.3

 

66.3

100

 2

40

0.020

0.5

3

5.7

17.9

18.1

100

58.3

57.6

100

67.3

66.5

37.3

1.8

35.7

95.8

19.1

0.35

Not

30

0.015

5.2

16.9

17.3

100

62.2

60.6

100

71.8

70.0

35.8

2.5

33.27

92.9

18.9

0.33

Not

25

0.013

5.0

16.3

16.6

100

64.7

63.4

100

74.7

73.2

35.3

3.5

31.8

90

18.8

0.33

Not

20

0.010

4.5

15.0

15.8

100

70.4

66.8

100

81.3

77.1

33.9

5.4

28.5

84.2

18.4

0.32

Not

15

0.008

3.9

13.4

15.0

100

78.2

70.4

100

90.3

81.3

31.7

10.7

21.1

66.3

17.8

0.27

Not

10

0.005

2.9

9.8

11.8

100

99.6

87.0

100

100

100

28.6

18

10.6

37.1

16.8

0.19

Not

5

0.003

3.9

7.9

10.1

100

100

97.6

100

100

100

27

26

0.4

1.4

9.1

0.06

Not

3

0.0015

4.65

7.2

9.7

100

100

100

100

.100

100

29.8

29.8

0

0

7.1

0.02

Not

2.5

0.0013

4.58

6.5

9.1

100

100

100

100

100

100

30.5

30.6

− 0.08

0

6.7

0.02

Not

2

0.0010

4.64

6.3

9.1

100

100

100

100

100

100

30.9

31

− 0.08

0

7.0

0.01

Not

0

0.000

5.5

5.5

8.1

100

100

100

100

100

100

35.9

35.9

0

0

   

 1

20

0.020

1.0

3

6.0

17.4

18.1

100

60.2

57.6

100

69.5

66.5

38.7

3.5

35.2

90.9

17.3

0.36

Not

15

0.015

5.2

15.6

16.8

100

67.7

62.6

100

78.2

72.3

36.7

7

29.6

80.8

16.6

0.30

Not

12.5

0.013

4.8

14.0

15.5

100

75.2

68.1

100

86.8

78.7

35

9.7

25.3

72.3

16.0

0.27.

Not

10

0.010

4.3

12.0

14.1

100

85.9

74.7

100

99.1

86.2

32.4

14.9

17.5

54.2

15.2

0.22

Not

7.50

0.008

4.8

11.2

13.7

100

90.6

76.7

100

100

88.5

28.6

21.3

7.3

25.6

15.0

0.14

Yes

5

0.005

5.1

9.6

12.3

100

100

84.2

100

100

97.2

27.1

26

1.1

4.3

14.1

0.07

Yes

2.5

0.003

5.6

8.0

11.3

100

100

90.0

100

100

100

30.6

30.7

0

0

10.5

0.02

Yes

1.5

0.0015

4.8

6.2

9.5

100

100

100

100

100

100

31.9

32.3

− 0.4

0

7.9

0.01

Yes

0

0.000

6.5

6.5

9.5

100

100

100

100

100

100

33.7

33.7

0

0

   

 0.5

15

0.030

1.25

3

7.5

.16.3

17.2

100

64.7

61.0

100

74.7

70.4

41.5

5.4

36

87

16.1

0.34

Not

10

0.020

6.3

13.7

15.3

100

76.7

69.0

100

88.5

79.7

32.9

11.4

21.5

65.3

14.2

0.25

Not

7.5

0.015

6.0

11.3

13.5

100

90.0

77.7

100

100

89.7

27.8

17.2

10.7

38.5

12.9

0.18

Yes

6.25

0.013

6.0

10.6

12.9

100

94.3

80.9

100

100

93.3

25.5

20.1

5.3

21

12.5

0.13

Yes

5

0.010

5.8

9.5

12.0

100

100

85.9

100

100

99.1

24.8

22.8

2

8.2

11.4

0.09

Yes

3.75

0.008

6.0

9.1

11.9

100

100

86.4

100

100

99.8

24.7

24.7

0.0

0

10.0

0.05

Yes

2.5

0.005

6.4

8.4

11.2

100

100

90.6

100

100

100

26

26.2

0

0

8.3

0.02

Yes

1.25

0.003

5.2

6.3

9.5

100

100

100

100

100

100

29.3

29.9

− 0.6

− 2

6.4

0.01

Yes

0

0.000

6.9

6.9

9.8

100

100

99.6

100

100

100

29.5

29.5

0

0

   

 2

40

0.020

3.50

6

6.5

16.5

16.8

100

63.9

62.6

100

3.7

72.3

37.8

1.7

36.1

95

16.4

0.63

Not

20

0.010

4.0

13.4

13.9

100

78.2

75.7

100

90.3

87.4

30.8

5.8

25

81

15.2

0.40

Yes

10

0.005

2.6

8.1

9.6

100

100

100

100

100

100

24.2

15.9

8.2

34

15.0

0.17

Yes

5

0.0025

3.2

6.3

8.2

100

100

100

100

100

100

24.9

24.2

0.7

0.03

12.0

0.05

Yes

3

0.0015

3.4

5.2

7.1

100

100

100

100

100

100

26.9

26.8

0.05

0.00

9.7

0.00

Yes

2

0.0010

3.7

4.8

6.8

100

100

100

100

100

100

28.1

28.0

0.02

0.01

9.6

0.01

Yes

0

0.000

4.3

4.3

6.3

100

100

100

100

100

100

33.4

33.4

0

0

   

 1

20

0.020

4.00

6

5.3

15.2

15.9

100

69.5

66.4

100

80.2

76.6

34.2

5.6

28.7

83

14.6

0.42

Yes

10

0.010

4.0

10.7

12.6

100

93.7

82.5

100

100

95.2

27.4

13.9

13.5

49.

13.7

0.27

Yes

5

0.005

4.66

8.3

10.8

100

100

93.1

100

100

100

25.2

24.2

1.0

4

10.4

0.07

Yes

4.2

0.0021

4.60

8.5

11.1

100

100

91.2

100

100

100

26.1

25.7

0.4

0

11.2

0.05

Yes

3.5

0.0018

4.66

7.9

10.7

100

100

93.7

100

100

100

26.3

26.2

0.06

0

9.0

0.04

Yes

2.5

0.0013

5.1

7.4

10.3

100

100

96.3

100

100

100

27.8

27.7

0.01

0

8.5

0.02

Yes

0

0.000

6.0

6.0

9.0

100

100

100

100

100

100

32.2

32.2

0

0

 2

40 ****

0.020

4.00

6

3.6

13.5

14.1

100

77.7

74.7

100

89.7

86.2

27.9

3.5

24.4

87.3

16.8

0.16

Yes

  1. *SH1 = 7.5 g water/kg air; dew point = 9.7 °C; room at 19.6 °C and 52% RH; outside at − 3 °C
  2. **SH2 = 8.7 g water/kg air; dew point = 11.9 °C; room at 19.6 °C and 60% RH; outside at − 3 °C
  3. ***Ti = Channel inlet air mean temperature, vertical velocity weighed
  4. ****In this case (37) there is a 15 × 5 cm cornice, 30 cm above the panel
  5. Bolditalic: minimum Wall temperature; italic: condensation; bold: RH < 66%