Who has a chart showing the gauge pressure of water vapor versus temperature?
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Can the relationship between gauge pressure and temperature be determined using a table of absolute pressure versus temperature? Also, for pipeline design, what books should be consulted regarding design temperature and pressure, as well as the selection of materials for pipeline valves?
Based on steam tables, it is possible to find the relationship between pressure, temperature, and enthalpy, as well as the corresponding values; however, the details are not provided. If material selection is all that is needed, then referring to the corrosion resistance manual will suffice
Of course, you need to check the table showing the relationship between absolute pressure and temperature; it’s available in textbooks on chemical engineering principles, and you can download one from the internet. When consulting the table, keep in mind that it refers to saturated steam; the gauge pressure is 0.1 less than the absolute pressure. The ambient atmospheric pressure is 0.1 MPa, and in this case the gauge pressure is defined as 0. You can check the relationship between gauge pressure and absolute pressure. (The following is for reference only and not fixed.) When the selected temperature is T＜-20, the operating temperature is -10 ； T≥15, operating temperature +20 ； It falls between these values; for the operating temperature of -10, the pressure is chosen to be P＜0, so 0.1 is used ； P≤1.8, operating pressure +0.18 ； If P≤4.0, use 1.1 times the working pressure
What is shown should be a table comparing absolute pressure and saturation temperature; the gauge pressure should vary according to local atmospheric pressure.