Problem 1. Air with 1.6 %mol SO₂ (you can assume very dilute conditions) is scrubbed withsolute-free water in a packed column of 1.5 m² cross-sectional area and 3.5 m in height. The totalgas flow rate is 0.062 kmol/s, the total liquid flow rate is 2.2 kmol/s, and the outlet air has an SO₂mol fraction of 0.004. The equilibrium can be described by y*=40x.a) What is the minimum water flow rate required?b) How does the overall number of gas transfer units (NOG) compare to the number of theoreticalstages required?c) What is the overall height of a gas transfer unit (HOG).

Given data are as follows: Gas flow rate = 0.062 kmol/s liquid flow rate = 2.2 kmol/s mol% of SO2 in…

Answered: Problem 1. Air with 1.6 %mol SO₂ (you…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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6. Air at 205 kPa and 37 °C flows upward through a 6-cm diameter inclined duct at a rate of 65 L/s. The duct diameter is then reduced to 4-cm through a reducer. The pressure change across the reducer is measured by a water manometer. The elevation difference between the two points on the pipe where the two arms of the manometer are attached is 0.20 m. Determine the differential height between the fluid levels of the two arms of the manometer. The properties of air at 37 °C is a molar mass of 29 g/mol, viscosity of -1.962*105 kg/m-s, and ep of 1.0063. Assumption: Liquids do
2. A piece of beef steak 7 cm thick will be frozen in the freezer room -40 ° C. This product has a moisture content of 73%, a density of 970 kg / m³, and a thermal conductivity (frozen) of 1.1 W / (m K). freezing time using the Plank equation. This product has an initial freezing temperature of -1.75 ° C, and the movement of air in the freezing room gives a convective heat transfer coefficient of 10 W / (m² K). t f = Answer hour.
28.21 A 1 x 10-2 m spherical pellet is sprayed with a very thin coat of paint. The paint contains a volatile solvent. To dry the pellet, a 300 K and 1.013 × 105 Pa air stream flows around it with a bulk velocity of 1 m/s. The estimated loading of the solvent in the wet paint is 0.12 g solvent/cm³. Physical properties are vapor pressure of the solvent = 1.27 x 104 Pa mass diffusivity of solvent in air = 9.62 x 10-6 m²/s kinematic viscosity of air density of air = 1.569 x 10-5 m²/s = 1.177 kg/m³ thermal conductivity of air thermal diffusivity of air heat capacity of air = 2.624 x 10-2 J/m.s. K = 2.216 x 10-5 m²/s = 1.006 J/g. K = 78 g/g mole molecular weight of the solvent Use the McAdam's¹¹ equation Nu = 0.37(Redp) 0.6 (Pr) 1/3, where Redp dp vx V to evaluate (a) the heat-transfer coefficient, h; (b) the mass-transfer coefficient, ke; (c) the molar flux of the solvent into the air stream.
the pressure drop across the tube bank, and (c) the rate of condensation of steam inside the tubes. Evaluate the air properties at an assumed mean temperature of 35°C and 1 atm. Is this a good assumption?solve this part too
On a day when wind is blowing over a lake (T(water) =20°C) at 5 m/s, which side of the air-water interface will be rate-limiting on the flux of Ethyl benzene (i.e. va or vw)?
A liquid mixture containing 40.0 wt% n-octane and the balance n-decane flows into a tank mounted on a balance. The mass in kg indicated by the scale is plotted against time. That data fall on a straight line that passes through the points (t = 5.00 min, m = 135 kg) and (t = 12.00, m = 231 kg). Estimate the volumetric flow rate of the liquid mixture. i L/min What does the empty tank weigh? i N

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