An average person takes 18 breaths/minute and each breath exhales 0.0005m^3 of air that contains 105% more CO2 than was inhaled. At the start of a seminar containing 201 people, the room air contains 0.4% CO2. The ventilation system delivers 0.00164m^3 of fresh air per minute (412,02 ppm CO2) to the room whose volume is 1050m^3. Find an expression for the concentration level of CO2 in the room as a function of time; assume that air is leaving the room at the same rate that it enters. a) Find the% CO2 in the air after 3 hours. b) if the maximum allowed CO2 concentration in the classroom is 600 ppm, find the time to reach the maximum concentration.
An average person takes 18 breaths/minute and each breath exhales 0.0005m^3 of air that contains 105% more CO2 than was inhaled. At the start of a seminar containing 201 people, the room air contains 0.4% CO2. The ventilation system delivers 0.00164m^3 of fresh air per minute (412,02 ppm CO2) to the room whose volume is 1050m^3. Find an expression for the concentration level of CO2 in the room as a function of time; assume that air is leaving the room at the same rate that it enters. a) Find the% CO2 in the air after 3 hours. b) if the maximum allowed CO2 concentration in the classroom is 600 ppm, find the time to reach the maximum concentration.
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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An average person takes 18 breaths/minute and each breath exhales 0.0005m^3 of air that contains 105% more CO2 than was inhaled. At the start of a seminar containing 201 people, the room air contains 0.4% CO2. The ventilation system delivers 0.00164m^3 of fresh air per minute (412,02 ppm CO2) to the room whose volume is 1050m^3. Find an expression for the concentration level of CO2 in the room as a function of time; assume that air is leaving the room at the same rate that it enters.
a) Find the% CO2 in the air after 3 hours.
b) if the maximum allowed CO2 concentration in the classroom is 600 ppm, find the time to reach the maximum concentration.
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