Elementary Principles of Chemical Processes, Binder Ready Version
Elementary Principles of Chemical Processes, Binder Ready Version
4th Edition
ISBN: 9781118431221
Author: Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher: WILEY
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Chapter 2, Problem 2.40P

A hygrometer, which measures the amount of moisture in a gas stream, is to be calibrated using the apparatus shown here:

Chapter 2, Problem 2.40P, A hygrometer, which measures the amount of moisture in a gas stream, is to be calibrated using the

Steam and dry air are fed at known flow rates and mixed to form a gas stream with a known water content, and the hygrometer reading is recorded; the flow rate of either the water or the air is changed to produce a stream with a different water content and the new reading is recorded, and so on. The following data are taken:

    Mass Fraction of Water, y Hygrometer Reading, R
    0.011 5
    0.044 20
    0.083 40
    0.126 60
    0.170 80

  1. Draw a calibration curse and determine an equation for y(R).
  2. Suppose a sample of a stack gas is inserted in the sample chamber of the hygrometer and a reading of R = 43 is obtained. If the mass flow rate of the stack gas is 1200 kg/h, what is the mass flow rate of water vapor in the gas?

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