In large and mid-sized refineries or chemical manufacturing facilities, emissions may be distributed over thousands of openings, making monitoring programs unfeasible. In the absence of monitoring, VOC emissions are predicted using emission factors or mathematical models. However, present use of naUTilus requires familiarity the numbering scheme of network components and branch connectivity in order to create a lengthy input file. By creating a user interface in ArcView, this project makes naUTilus easier to use, increases the power of the model by facilitating it's application to larger facilities, and spatially represents the input and output. Introduction to Industrial Sewer Networks Industrial sewer networks can be classified into two sections.
Emissions occur at manholes, drains, and elevated vents by air exchange.
It is the product of a great deal of research done by several individuals under the supervision of Dr. Richard Corsi at the University of Texas at Austin. Several relationships used in naUTilus were experimentally derived. At present, a great deal of knowledge of the model is needed to successfully run the naUTilus program. To see an example input file, click here. Similarly, the output is a text file listing the output.