Word Problem 6

ocgirl83

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Sep 3, 2005
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According the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. , a nonsmoking classroom should have a ventilation rate of 15ft^3 per min for each person in the classroom.
A) write an equation that models the total ventilation V(in cubic feet per hour) necessary for a classroom with x students.
B) A common unit of ventilation is an air change per hour(ach). 1 ach is equivalent to exchanging all of the air in a room every hour. If x students are in a classroom having volume 15,000ft^3, determine how many air exchanges per hour (A) are necessary to keep the room properly ventilated.
C) Find the nessary number of ach A if the classroom has 40 students in it.
D) In areas like bars and lounges that allow smoking, the ventilation rate should be increased to 50ft^3 per min per person. Compared to classrooms, ventilation should be increased by what factor in heavy smoking areas?
 

stapel

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What have you tried? How far have you gotten?

Eliz.
 
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