Conversion between nominal and actual volume
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Question: For example, for 10,000 cubic meters of flue gas, if the actual pressure is 100 Pa and the temperature is 200 degrees Celsius, what is the actual volume under these conditions? Which of these two approximate calculations is correct? (1 atmosphere is approximately 0.1 MPa; 100 Pa = 0.0001 MPa). 1. (0.1*10000/273) = (0.0001*V2/473); find V2. 2. (0.1*10000/273) = (0.1001*V2/473); find V2. By my understanding, gauge pressure refers to the pressure under normal atmospheric conditions, that is, the value read on a gauge, which is 0 ； The actual pressure is 100 Pa, which should be higher than the pressure under natural conditions; therefore, it is considered to be 0.1001 MPa. Please explain this, as I’m still confused
The second one is right! Pressure should be in gauge pressure, not absolute pressure.