Solution analysis for question 26 on the afternoon of the first day of the 2014 Chemistry Engineering professional examination
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For those preparing for the Certified Chemical Engineer exam, question 26 from the first day of the 2014 exam – in the afternoon session – involved calculating the aperture size of a orifice plate; it was not possible to determine the answer. What were the answers that everyone came up with? Is the relative density 920 kg/m3 in that case?
Hello, C=0.59, P1-P2=1.88 MPa, relative density 920 kg/m3, flow rate 40000/3600 kg/s. When these values are inserted into the formula, I don’t get a result of 20. Could you check if the values I’ve provided are correct?
The relative density is 0.92; for details, refer to Tianjin University’s Note on Chemistry 402
Using the formula 1.252 from the Tianjin University textbook, the result is 20, but using the formula given in the problem, it’s not possible to get a result?
HG/T20570.15 – this standard includes the formula mentioned; the unit for Q is m/h, γ is 0.92, and the calculated value is 20 mm.