The map provides a visual flow chart to help choose the correct daemon. The organization of the map is not arbitrary, but based on the standard approach of simplifying thermodynamic systems. Only after you master the systematic approach discussed in the Selecting a Daemon section, this map can be a great time saver.

The daemons in TEST are organized into three branches:

1. Basic Tools: The Basic daemons branch offers rudimentary tools such as unit converter, scientific calculator, and traditional charts and tables.

2. States & Properties: The state daemons are for finding properties of thermodynamic working substances (e.g. H20 from steam to moist air). They are divided into two groups (1) system-state daemons for finding states of a substance occupying a fixed volume, and (2) flow-state daemons for finding states at different cross-sections of a flow.

3. System Analysis: Selecting a system daemon is not trivial. It depends on how the system can be simplified with assumption appropriate for a given problem. The system daemons are divided into various categories and their classification is discussed in more detail in the Selecting a Daemon section below.


For solving a problem involving cooling tower, which is an open system operating at steady state, a string of appropriate assumptions will lead you to the right daemon.