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Table 2 Experimental results of 3D thermal modeling and environmental measurements

From: 3D Visualization of thermal resistance and condensation problems using infrared thermography for building energy diagnostics

Item

Metrics

Case #1

Case #2

3D thermal modeling

# of 2D Thermal Images

446

429

# of 3D Thermal Points

3,042,350

2,838,478

# of Vertices in Baseline Mesh Model (wall)

18,964

13,771

# of Vertices excluding static occlusions in Mesh Model by using Threshold (wall)

17,297

7,740

Computational Time for 3D Thermal Modeling

2hr 30min

2hr 21min

Environmental measurements

Outside air temperature (°C)

5

3

Indoor air temperature (°C)

28

24

Dew point temperature (°C)

13.15

11.64

Relative humidity (%)

40

46

Calculated metrics in 3D

Error on registration (mm)

8.69

9.30

Average (µ) of R-values of Wall (m2K/W)

0.753

0.833

Standard Deviation (σ) of R-values of Wall

0.10207

0.14463

Range of actual R-values by considering 95% confidence µ − 1.96 σ / n , μ + 1.96 σ / n

(0.75168, 0.75472)

(0.82986, 0.83631)

Average (μ) of R-values of Window (m2K/W)

0.260

0.274

Standard Deviation (σ) of R-values of Window

0.00173

0.00211

Range of actual R-values by considering 95% confidence μ − 1.96 σ / n , μ + 1.96 σ / n

(0.26011, 0.26027)

(0.2737, 0.27389)