FULL VACCUM TEMPERATURE
FULL VACCUM TEMPERATURE
(OP)
How do you determine the temperature that is associated with full vaccum? Also what part of ASME VIII can I find this information?
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RE: FULL VACCUM TEMPERATURE
but you will never get a full vacuum in practice. In our plant we work at 0,3 mBar abs (not too much vacuum and yet it poses several challenges on the design, assembly and operation), and I Know vacuum pumps that work as low as 0,01 mBar. yet this is not full vacuum as I have read there are processes working at 0,001 mBar.
first, you should set a real, practical, measurable process pressure and then, go to the substance phase diagram and find the corresponding temperature of phase equilibrium.
hope it helps
mvelez
RE: FULL VACCUM TEMPERATURE
RE: FULL VACCUM TEMPERATURE
That said, I've often seen vessels rated for full vacuum at 300 deg F.
RE: FULL VACCUM TEMPERATURE
ASME DOES contain the methodology and rules necessary to design a vessel to sustain "full vacuum" conditions.
"Full vacuum" will never exist, as stated above....... but this loading condition is commonly specified in process vessel design.
Suggest that you become familiar with the structure, scope and intention of the many Pressure Vessel codes....
RE: FULL VACCUM TEMPERATURE
RE: FULL VACCUM TEMPERATURE
Could you please explain? Do you need this for dimensioning the strength of a vessel that is dimensioned to be operated at a created given vacuum, or to dimension for a vessel where (for instance) cleaning steam suddenly cools (collapsing from steam to condensed water) and creates a vacuum?
The last you might find if you search for dimensioning of busrsting discs. You can then select a disc dimension, check the amount necessary and timerate, and dimension your resistance against vacuum at a safe limit below.
RE: FULL VACCUM TEMPERATURE
In the other direction NASA has pressurized vessel working in space at -273C and 00.00 vacuum. But I don't think the original poster is using either of our two conditions. 8<)