Help needed with the theoretical plate number for question 36 in the 2014 case and question 38 in the 2010 case
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For question 36 in the 2014 case study: the packing tower is 9 meters high, with complete condensation at the top and reboiling at the bottom; there are 18 theoretical plates. What is the plate height? Question 38 in the 2010 case: the conditions are the same, only it is changed to a condenser. What is the correct answer?
In 2010, one tray was used for the fractional condenser and another for the reboiler; thus, there were actually 16 trays in total. The tray spacing was 15H = 9, with H = 0.6 m. In 2014, the total condenser did not count as a theoretical tray.
In 2010, one tray was used for the fractional condenser and another for the reboiler; thus, there were actually 16 trays in total. The tray spacing was 15H = 9, with H = 0.6 m. In 2014, the total condenser did not count as a theoretical tray.
In 2010, one tray was used for the fractional condenser and another for the reboiler; thus, there were actually 16 trays in total. The tray spacing was 15H = 9, with H = 0.6 m. In 2014, the total condenser did not count as a theoretical tray.
But the answer to that question in 2010 was 0.56, right?…
9 meters fill layer height, complete condensation and reboiling, 18 plates, the answer is 0.583
9 meters fill layer height, complete condensation and reboiling, 18 plates, the answer is 0.583
The answer is: 1) For 2014, the plate height = 9/(18-1) = 0.53 m. Since the reboiler is counted as 1 theoretical plate, 1 is subtracted. 2) For 2010, the plate height = 9/(18-2) = 0.56 m. Since the reboiler and the separator are each counted as 1 theoretical plate, 2 is subtracted.
It is a packed tower, not a plate tower, so there is no need to subtract 1 anymore
It is suggested that the original poster post the topic as well so that it can be discussed.