Steam is commonly used in industrial environments for power generation and in heating and drying applications. On a tissue machine, steam is used to dry the sheet of paper to a target moisture content before it is wound up on large rolls that can be transported, stored and shipped. Before one can understand how steam is used in heating and drying applications, like tissue machine drying systems, it is important to understand how steam is created, how heat energy is transferred from the steam to the sheet of tissue, and the relationship between steam pressure and steam temperature.
Learning Objectives
- Differentiate between the three phases of water - solid, liquid, and gas
- Define boiling point
- Define latent heat
- Describe condensation
- Define superheated steam
- Describe the relationship between steam pressure, steam temperature, and latent heat
- Explain how steam is used in a tissue machine drying system