Some thermodynamics problems include state evaluation of pure science issues, basic challenges, problems involving a closed system undergoing a process and closed steady systems problems. Other problems are those that involve entropy calculations, problems of availability and problems of vapor-compression refrigeration cycle. Thermodynamics is essential in the study of sciences and other science-related applications.
Examples of problems involving state evaluation of a pure substance involve finding the properties of a pure substance in the presence of other properties. Basic thermodynamics contains problems involving basic concepts, such as unit conversion, free body diagram and pressure measurements. The first law for closed systems in thermodynamics constitutes problems involving a closed system undergoing a process. The learner uses the first law analysis to find the missing quantity when given information about final state and surrounding interaction. On the other hand, the first law for open systems involves problems where the learner uses information about the inlet state and surrounding interactions to find the missing quantity. Thermodynamics also caters to problems involving closed steady systems, such as heats pumps, engines and refrigerators. An example of entropy and second law deals with problems involving entropy changes, generation or an isentropic process. Thermodynamics also deals with problems involving the determination of useful work, availability or second law efficiency. It deals with a cross section of operations involving mathematical solutions.