What is the classification of weak vapor?
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The steam commonly used in chemical plants is classified into low-pressure steam, low-low pressure steam, medium-pressure steam, high-pressure steam, and ultra-high-pressure steam. I would like to know what the criteria for this classification are – specifically, what pressure ranges correspond to low-pressure steam, and so on
This is clearly stated in the specifications; you can check those specifications. Learning how to use reference books is also a skill.
I know that turbines are classified according to the new steam pressure; I wonder if there are other ways of classification as well.? Low-pressure turbines: the new steam pressure ranges from 1.2 MPa to 2 MPa； ? Medium-pressure steam turbine: New steam pressure ranges from 2.1 MPa to 8 MPa ； ? High-pressure steam turbine: New steam pressure ranges from 8.1 MPa to 12.5 MPa ； ? Ultra-high pressure steam turbines with a new steam pressure of 12.6 MPa to 15.1 MPa ； ? Subcritical steam turbines: the new steam pressure ranges from 15.1 MPa to 22 MPa ； ? Supercritical steam turbines have a new steam pressure of 22.12 MPa or higher.
Factories are generally classified in this way: low-pressure steam is usually between 0.1 and 1.6 MPa； Medium pressure 1.6~.6.4MPa ； High pressure: 6.4~100 MPa.
Is steam with pressures such as 0.5, 1.0, 3.0 MPa common in factories?
I have a vague memory of it. You saw it in that book; can you tell me the source? Thank you!
Common steam classifications in chemical plants: high pressure, 4.5 Mpa or 6 Mpa; medium pressure: 1 Mpa or 2 Mpa； Low pressure: 350 Kpa or 170 Kpa. For specific classifications, please refer to page 234 of the second edition of Cai Erfu’s \"System Design of Chemical Plants\".
Our steam is classified according to the temperature required for its intended use; generally, there are pressures of 0.3MPA and 0.6MPA, while those coming from the pipeline network have pressures of 0.8MPA and 1.0MPA