P&K KFA (VDI 3781 part 4)
Sample Report (Log)
Sample A 1 from the guideline. Real building ensemble
Calculation for the exhaust gas discharge system 'X1'
Details for Outlet building 'House 3' - Symmetric pitch roof α ≥ 20°
| Quantity | Parameter | Value |
|---|---|---|
| Height of ground over origin of coordinates (Section 6.2.4, Figure 10) | Δh | 0.00 m |
| Ridge height | HFirst | 10.40 m |
| Eaves height (Figure 4) | HTraufe | 6.70 m |
| Actual roof height (Figure 4, Section 6.2.1.2.2) | HDach | 3.70 m |
| Width of half of the gable end opposite the outlet. For symmetric roof this will be b/2 else b | bLuv | 5.65 m |
| Horizontal distance between the center of the outlet cross-section and the ridge (Figure 4) | a | 0.00 m |
| Roof pitch angle (Figure 4) | α | 33.22 ° |
| Roof pitch correction (interpolated with table 2) | γ | 2.15 ° |
| Factor for determining H2 (interpolated with table 2) | f | 0.66 |
| Height of recirculation zone for distance a to ridge (Equation 1) | H1 | 0.00 m |
| Maximum height of the recirculation zone (Equation 2) | H2 | 2.43 m |
| Calculated height of exhaust gas discharge system over ridge (Equation 3) | HS1 | 0.00 m |
Details for building 'House 1' - Symmetric pitch roof α ≥ 20°
| Quantity | Parameter | Value |
|---|---|---|
| Height of ground over origin of coordinates (Section 6.2.4, Figure 10) | Δh | -2.10 m |
| Ridge height | HFirst | 11.50 m |
| Eaves height (Figure 4) | HTraufe | 7.50 m |
| Actual roof height (Figure 4, Section 6.2.1.2.2) | HDach | 4.00 m |
| Width of half of the gable end opposite the outlet. For symmetric roof this will be b/2 else b | bLuv | 6.70 m |
| Horizontal distance between the center of the outlet cross-section and the ridge (Figure 4) | a | 0.06 m |
| Roof pitch angle (Figure 4) | α | 30.84 ° |
| Roof pitch correction (interpolated with table 2) | γ | 0.56 ° |
| Factor for determining H2 (interpolated with table 2) | f | 0.69 |
| Height of recirculation zone for distance a to ridge (Equation 1) | H1 | 0.04 m |
| Maximum height of the recirculation zone (Equation 2) | H2 | 2.76 m |
| Calculated height of exhaust gas discharge system over ridge (Equation 3) | HS1 | 0.04 m |
| Horizontal extend of the recirculation zone (Equation 15, Figure 8) | lRZ | 18.20 m |
| Effective length of an upstream building (Equation 16, Figure 8) | leff | 13.44 m |
| Angle between the gable side of the upstream building and the line to exhaust gas discharge system (Section 6.2.2.1, Figure 8) | β | 89.87 ° |
| Horizontal distance of the exhaust gas discharge system from the upstream building (Figure 8) | lA | 17.52 m |
| Height of the outlet required by the upstream buildings over the ridge of 'House 3' (Equation 17, Figure 8) | HS2 | -8.64 m |
Details for building 'House 5' - Symmetric pitch roof α ≥ 20°
| Quantity | Parameter | Value |
|---|---|---|
| Height of ground over origin of coordinates (Section 6.2.4, Figure 10) | Δh | 1.70 m |
| Ridge height | HFirst | 11.00 m |
| Eaves height (Figure 4) | HTraufe | 6.10 m |
| Actual roof height (Figure 4, Section 6.2.1.2.2) | HDach | 4.90 m |
| Width of half of the gable end opposite the outlet. For symmetric roof this will be b/2 else b | bLuv | 7.80 m |
| Horizontal distance between the center of the outlet cross-section and the ridge (Figure 4) | a | 6.22 m |
| Roof pitch angle (Figure 4) | α | 32.14 ° |
| Roof pitch correction (interpolated with table 2) | γ | 1.42 ° |
| Factor for determining H2 (interpolated with table 2) | f | 0.67 |
| Height of recirculation zone for distance a to ridge (Equation 1) | H1 | 3.69 m |
| Maximum height of the recirculation zone (Equation 2) | H2 | 3.29 m |
| Calculated height of exhaust gas discharge system over ridge (Equation 3) | HS1 | 3.29 m |
| Horizontal extend of the recirculation zone (Equation 15, Figure 8) | lRZ | 23.68 m |
| Effective length of an upstream building (Equation 16, Figure 8) | leff | 19.54 m |
| Angle between the gable side of the upstream building and the line to exhaust gas discharge system (Section 6.2.2.1, Figure 8) | β | 76.37 ° |
| Horizontal distance of the exhaust gas discharge system from the upstream building (Figure 8) | lA | 16.83 m |
| Height of the outlet required by the upstream buildings over the ridge of 'House 3' (Equation 17, Figure 8) | HS2 | 1.35 m |
Height of recirculation zones for the upstream buildings
at the outlet system 'X1' over ridge 'House 3'
| Name of the building | Height of recirculation zone HS2 |
|---|---|
| House 1 | -8.64 m |
| House 5 | 1.35 m |
Calculation for the outlet 'X1' on building 'House 3'
All heights over ridge
| Quantity | Value |
|---|---|
| Parameter for solid fuel combustion. Nominal heat output: 15 kW | |
| Additive term HÜ (Table 1) | 0.40 m |
| Outlet height above reference level HB (Table 3) | 1.00 m |
| Radius of exposure zone R (Table 3) | 15.00 m |
| Outlet building | |
| Required outlet height for outlet building HA1=HS1+HÜ (Equation 4) | 0.40 m |
| Upstream buildings | |
| Highest recirculation zone from the upstream building 'House 5' HA2=HS2+HÜ (Equation 19) | 1.75 m |
| Required outlet height for undisturbed removal HA=max(HA1,HA2) (Figure 2)) | 1.75 m |
| Exposure zone | |
| No air intake in exposure zone R HE=0 | |
| Required outlet height for adequate dilution HE=max(HE,HE1) (Section 6.3.1.1) | -8.40 m |
| Height of exhaust gas discharge system HM=max(HA,HE) over the ridge | 1.8 m |
Calculation for the exhaust gas discharge system 'X2'
Details for Outlet building 'House 3' - Symmetric pitch roof α ≥ 20°
| Quantity | Parameter | Value |
|---|---|---|
| Height of ground over origin of coordinates (Section 6.2.4, Figure 10) | Δh | 0.00 m |
| Ridge height | HFirst | 10.40 m |
| Eaves height (Figure 4) | HTraufe | 6.70 m |
| Actual roof height (Figure 4, Section 6.2.1.2.2) | HDach | 3.70 m |
| Width of half of the gable end opposite the outlet. For symmetric roof this will be b/2 else b | bLuv | 5.65 m |
| Horizontal distance between the center of the outlet cross-section and the ridge (Figure 4) | a | 5.65 m |
| Roof pitch angle (Figure 4) | α | 33.22 ° |
| Roof pitch correction (interpolated with table 2) | γ | 2.15 ° |
| Factor for determining H2 (interpolated with table 2) | f | 0.66 |
| Height of recirculation zone for distance a to ridge (Equation 1) | H1 | 3.40 m |
| Maximum height of the recirculation zone (Equation 2) | H2 | 2.43 m |
| Calculated height of exhaust gas discharge system over ridge (Equation 3) | HS1 | 2.43 m |
Details for building 'House 1' - Symmetric pitch roof α ≥ 20°
| Quantity | Parameter | Value |
|---|---|---|
| Height of ground over origin of coordinates (Section 6.2.4, Figure 10) | Δh | -2.10 m |
| Ridge height | HFirst | 11.50 m |
| Eaves height (Figure 4) | HTraufe | 7.50 m |
| Actual roof height (Figure 4, Section 6.2.1.2.2) | HDach | 4.00 m |
| Width of half of the gable end opposite the outlet. For symmetric roof this will be b/2 else b | bLuv | 6.70 m |
| Horizontal distance between the center of the outlet cross-section and the ridge (Figure 4) | a | 5.71 m |
| Roof pitch angle (Figure 4) | α | 30.84 ° |
| Roof pitch correction (interpolated with table 2) | γ | 0.56 ° |
| Factor for determining H2 (interpolated with table 2) | f | 0.69 |
| Height of recirculation zone for distance a to ridge (Equation 1) | H1 | 3.33 m |
| Maximum height of the recirculation zone (Equation 2) | H2 | 2.76 m |
| Calculated height of exhaust gas discharge system over ridge (Equation 3) | HS1 | 2.76 m |
| Horizontal extend of the recirculation zone (Equation 15, Figure 8) | lRZ | 21.61 m |
| Effective length of an upstream building (Equation 16, Figure 8) | leff | 16.88 m |
| Angle between the gable side of the upstream building and the line to exhaust gas discharge system (Section 6.2.2.1, Figure 8) | β | 77.79 ° |
| Horizontal distance of the exhaust gas discharge system from the upstream building (Figure 8) | lA | 17.83 m |
| Height of the outlet required by the upstream buildings over the ridge of 'House 3' (Equation 17, Figure 8) | HS2 | -4.44 m |
Details for building 'House 5' - Symmetric pitch roof α ≥ 20°
| Quantity | Parameter | Value |
|---|---|---|
| Height of ground over origin of coordinates (Section 6.2.4, Figure 10) | Δh | 1.70 m |
| Ridge height | HFirst | 11.00 m |
| Eaves height (Figure 4) | HTraufe | 6.10 m |
| Actual roof height (Figure 4, Section 6.2.1.2.2) | HDach | 4.90 m |
| Width of half of the gable end opposite the outlet. For symmetric roof this will be b/2 else b | bLuv | 7.80 m |
| Horizontal distance between the center of the outlet cross-section and the ridge (Figure 4) | a | 1.47 m |
| Roof pitch angle (Figure 4) | α | 32.14 ° |
| Roof pitch correction (interpolated with table 2) | γ | 1.42 ° |
| Factor for determining H2 (interpolated with table 2) | f | 0.67 |
| Height of recirculation zone for distance a to ridge (Equation 1) | H1 | 0.87 m |
| Maximum height of the recirculation zone (Equation 2) | H2 | 3.29 m |
| Calculated height of exhaust gas discharge system over ridge (Equation 3) | HS1 | 0.87 m |
| Horizontal extend of the recirculation zone (Equation 15, Figure 8) | lRZ | 21.03 m |
| Effective length of an upstream building (Equation 16, Figure 8) | leff | 16.53 m |
| Angle between the gable side of the upstream building and the line to exhaust gas discharge system (Section 6.2.2.1, Figure 8) | β | 87.07 ° |
| Horizontal distance of the exhaust gas discharge system from the upstream building (Figure 8) | lA | 19.47 m |
| Height of the outlet required by the upstream buildings over the ridge of 'House 3' (Equation 17, Figure 8) | HS2 | -3.30 m |
Height of recirculation zones for the upstream buildings
at the outlet system 'X2' over ridge 'House 3'
| Name of the building | Height of recirculation zone HS2 |
|---|---|
| House 1 | -4.44 m |
| House 5 | -3.30 m |
Calculation for the outlet 'X2' on building 'House 3'
All heights over ridge
| Quantity | Value |
|---|---|
| Parameter for solid fuel combustion. Nominal heat output: 15 kW | |
| Additive term HÜ (Table 1) | 0.40 m |
| Outlet height above reference level HB (Table 3) | 1.00 m |
| Radius of exposure zone R (Table 3) | 15.00 m |
| Outlet building | |
| Required outlet height for outlet building HA1=HS1+HÜ (Equation 4) | 2.83 m |
| Upstream buildings | |
| Highest recirculation zone from the upstream building 'House 5' HA2=HS2+HÜ (Equation 19) | -2.90 m |
| Required outlet height for undisturbed removal HA=max(HA1,HA2) (Figure 2)) | 2.83 m |
| Exposure zone | |
| No air intake in exposure zone R HE=0 | |
| Required outlet height for adequate dilution HE=max(HE,HE1) (Section 6.3.1.1) | -8.40 m |
| Height of exhaust gas discharge system HM=max(HA,HE) over the ridge | 2.8 m |
Calculation for the exhaust gas discharge system 'X3'
Details for Outlet building 'House 3' - Symmetric pitch roof α ≥ 20°
| Quantity | Parameter | Value |
|---|---|---|
| Height of ground over origin of coordinates (Section 6.2.4, Figure 10) | Δh | 0.00 m |
| Ridge height | HFirst | 10.40 m |
| Eaves height (Figure 4) | HTraufe | 6.70 m |
| Actual roof height (Figure 4, Section 6.2.1.2.2) | HDach | 3.70 m |
| Width of half of the gable end opposite the outlet. For symmetric roof this will be b/2 else b | bLuv | 5.65 m |
| Horizontal distance between the center of the outlet cross-section and the ridge (Figure 4) | a | 0.00 m |
| Roof pitch angle (Figure 4) | α | 33.22 ° |
| Roof pitch correction (interpolated with table 2) | γ | 2.15 ° |
| Factor for determining H2 (interpolated with table 2) | f | 0.66 |
| Height of recirculation zone for distance a to ridge (Equation 1) | H1 | 0.00 m |
| Maximum height of the recirculation zone (Equation 2) | H2 | 2.43 m |
| Calculated height of exhaust gas discharge system over ridge (Equation 3) | HS1 | 0.00 m |
Details for building 'House 5' - Symmetric pitch roof α ≥ 20°
| Quantity | Parameter | Value |
|---|---|---|
| Height of ground over origin of coordinates (Section 6.2.4, Figure 10) | Δh | 1.70 m |
| Ridge height | HFirst | 11.00 m |
| Eaves height (Figure 4) | HTraufe | 6.10 m |
| Actual roof height (Figure 4, Section 6.2.1.2.2) | HDach | 4.90 m |
| Width of half of the gable end opposite the outlet. For symmetric roof this will be b/2 else b | bLuv | 7.80 m |
| Horizontal distance between the center of the outlet cross-section and the ridge (Figure 4) | a | 1.78 m |
| Roof pitch angle (Figure 4) | α | 32.14 ° |
| Roof pitch correction (interpolated with table 2) | γ | 1.42 ° |
| Factor for determining H2 (interpolated with table 2) | f | 0.67 |
| Height of recirculation zone for distance a to ridge (Equation 1) | H1 | 1.06 m |
| Maximum height of the recirculation zone (Equation 2) | H2 | 3.29 m |
| Calculated height of exhaust gas discharge system over ridge (Equation 3) | HS1 | 1.06 m |
| Horizontal extend of the recirculation zone (Equation 15, Figure 8) | lRZ | 21.71 m |
| Effective length of an upstream building (Equation 16, Figure 8) | leff | 17.28 m |
| Angle between the gable side of the upstream building and the line to exhaust gas discharge system (Section 6.2.2.1, Figure 8) | β | 84.60 ° |
| Horizontal distance of the exhaust gas discharge system from the upstream building (Figure 8) | lA | 9.57 m |
| Height of the outlet required by the upstream buildings over the ridge of 'House 3' (Equation 17, Figure 8) | HS2 | 4.13 m |
Height of recirculation zones for the upstream buildings
at the outlet system 'X3' over ridge 'House 3'
| Name of the building | Height of recirculation zone HS2 |
|---|---|
| House 5 | 4.13 m |
Calculation for the outlet 'X3' on building 'House 3'
All heights over ridge
| Quantity | Value |
|---|---|
| Parameter for solid fuel combustion. Nominal heat output: 15 kW | |
| Additive term HÜ (Table 1) | 0.40 m |
| Outlet height above reference level HB (Table 3) | 1.00 m |
| Radius of exposure zone R (Table 3) | 15.00 m |
| Outlet building | |
| Required outlet height for outlet building HA1=HS1+HÜ (Equation 4) | 0.40 m |
| Upstream buildings | |
| Highest recirculation zone from the upstream building 'House 5' HA2=HS2+HÜ (Equation 19) | 4.53 m |
| Required outlet height for undisturbed removal HA=max(HA1,HA2) (Figure 2)) | 4.53 m |
| Exposure zone | |
| Highest air intake in exposure zone R (Building 'House 5') HF | -0.10 m |
| Required outlet height for adequate dilution HE=HF+HB | 0.90 m |
| Height of exhaust gas discharge system HM=max(HA,HE) over the ridge | 4.5 m |