Since the .DAT files created by the program do not tell what variable each data line represents, you may want to print out this page to make editing easier. Try the following sample data:

• Source type: Point

• Emission rate: 1 g/s

• Stack height: 35 m

• Stack inside diameter: 2.4 m

• Stack exit velocity: 11.7 m/s

• Stack gas exit temperature: 432 K

• Ambient air temperature: 293 K

• Receptor height: 0 m

• Urban/Rural option: Rural

• Building downwash considered: No

• Complex terrain screen: No

• Simple terrain screen: No

• Choice of meteorology: 1 - Full meteorology

• Automated distance array: Yes

• Minimum distance: 0 m

• Maximum distance: ,1000 m

• Use discrete distances: No

• Fumigation calculation: No

If you'd like, in a second run consider the effect of building downwash for a building that is 50 m high, 75 m wide and 100 m long, and compare results.

Some questions you should now be able to answer include:

• At what distance from the stack is the maximum one-hour concentration found?

• What is this concentration?

• What is the maximum concentration within 500 m of the source?

...move on to see the Solution

Return to the main page