Most problems in thermodynamics involve a system that interacts with its surroundings in the form of heat, work, and/or mass transfer. A thermodynamic system is anything within a well-defined boundary; everything external to the system belongs to the surroundings. Because of this broad definition, the key to simplify a system problem is to classify it appropriately. Follow this link to systematically classify the problem and launch an appropriate daemon.

Examples can be found in the Tutorial (Daemons section), Slides (screen shots), and Problems pages.

Problems involving evaluation of states and properties, a snapshot of variables or attributes (called properties) that define a uniform volume or flow. A typical problem may involve finding a particular property when the state is given in terms of other properties. 

Examples can be found in the Tutorial (Daemons section), Slides (screen shots), and Problems pages.

Convenience daemons such as the DeskCal (a desktop scientific calculator) or UnitConverter, and old-fashioned tables and charts can be found here. The thermodynamic tables and charts can be used to manually verify a TEST solution, and can be useful in a classroom.