If you are responsible for the design or maintenance of any aspect of air-conditioning in buildings, a clear and comfortable understanding of the chart will make your job easier. It is a tool that can make it easier to troubleshoot air-conditioning problems in buildings.
The psychrometric chart is built upon two simple concepts.
1. Indoor air is a mixture of dry air and water vapor.
2. There is a specific amount of energy in the mixture at a specific temperature and pressure.