A differential mercury manometer is used to measure the pressure drop across an orifice meter as liquid benzene flows steadily in a pipe. Sketch this system showing the section of pipe with the manometer and the orifice meter, showing your understanding of what these devices are. a) Taking the benzene to be flowing from left to right on your sketch, sketch the mercury in the manometer making it clear whether the mercury level in the left or the right arm would be higher. b) If this system is to accommodate benzene flow rates leading to pressure drops of up to 3.5 atm, at least how tall must the manometer be (in m)? That is, what is the maximum height difference in manometer fluid levels that needs to be measured? c) If the flowing fluid were to be air instead of benzene, would the mercury level difference in the manometer be larger, smaller, or the same as with the flowing liquid benzene? Briefly explain.
A differential mercury manometer is used to measure the pressure drop across an orifice meter as liquid benzene flows steadily in a pipe. Sketch this system showing the section of pipe with the manometer and the orifice meter, showing your understanding of what these devices are.
a) Taking the benzene to be flowing from left to right on your sketch, sketch the mercury in the manometer making it clear whether the mercury level in the left or the right arm would be higher.
b) If this system is to accommodate benzene flow rates leading to pressure drops of up to 3.5 atm, at least how tall must the manometer be (in m)? That is, what is the maximum height difference in manometer fluid levels that needs to be measured?
c) If the flowing fluid were to be air instead of benzene, would the mercury level difference in the manometer be larger, smaller, or the same as with the flowing liquid benzene? Briefly explain.
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