P&K 3783 (VDI 3783 part 1+2)
Inputs (Sample)
Source data for the dispersion calculation according to VDI 3783
Burst pipe on the roof 12.12.91
| Input for the dispersion calculation according | |
|---|---|
| Ambient development height [m] | 0 |
| Source height [m] | 10 |
| X-Expansion of the source [m] | 0 |
| Y-Expansion of the source [m] | 0 |
| Z-Expansion of the source [m] | 0 |
| Inversion for mean situation? | no |
| Dispersion category | stable |
| Wind velocity [m/s] | 2 |
| Consider rise? | no |
| Threshold for rise [MW] | 6 |
| Roughness category | individual buildings/trees |
| Number of supporting points for the calculation | 0 |
| Calculate the worst values? | yes |
| Calculate ambient air course? | yes |
| Input for dispersion calculation according to | |
|---|---|
| Dispersion area | area I |
| Type of release | gaseous |
| Material list | |||
|---|---|---|---|
| Name | Density | T-equivalent | Conc. |
| [kg/m³] | [°C] | [g/m³] | |
| BENZENE | 3.4900 | -171.7 | 120 |
| PROPANE | 2.0100 | -97.17 | 34 |
| ACETONE | 2.5900 | -136.5 | 100 |
| METHANE | 0.7200 | 217.86 | 122 |
| Parameter for VDI 3783 part 2 | ||||||
|---|---|---|---|---|---|---|
| Name | Boiling point | Lower flammability limit | Part 2 | Flammability distance [m] | LC | |
| [°C] | [%] | mean | worst | [m] | ||
| BENZENE | 80.20 | 1.200 | continuous | 87.95 | 114.7 | 0.412 |
| PROPANE | -42.1 | 2.100 | continuous | 52.66 | 82.07 | 0.391 |
| ACETONE | 56.30 | 2.5 | continuous | 58.25 | 89.33 | 0.481 |
| METHANE | -162 | 5 | not required | 0 | 0 | 0 |
| Emission course | |||
|---|---|---|---|
| Duration | Exhaust volume rate | Temperature | Heat |
| [s] | [m³/s] | [°C] | [MW] |
| 50 | 12 | 200 | 2.8044 |
| 150 | 2 | 30 | 0.0492 |
| 70 | 5 | 50 | 0.2460 |