6) A laboratory has four hoods; each is 39 in. wide. When the hood door is open to a height of 8 in. and the hoods are operating, the average air velocity through the hood face is 170 ft/min. (a) Evaluate the total ventilation rate for this room, assuming that there are no other exhausts.

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter12: Quadratic Functions
Section12.8: Joint And Combined Variation
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Answer is 1470 ft3/min or 41.7 m3/min

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6) A laboratory has four hoods; each is 39 in. wide. When the hood door is
open to a height of 8 in. and the hoods are operating, the average air
velocity through the hood face is 170 ft/min.
(a) Evaluate the total ventilation rate for this room, assuming that there are
no other exhausts.
Transcribed Image Text:6) A laboratory has four hoods; each is 39 in. wide. When the hood door is open to a height of 8 in. and the hoods are operating, the average air velocity through the hood face is 170 ft/min. (a) Evaluate the total ventilation rate for this room, assuming that there are no other exhausts.
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(b) The laboratory is designed for use by 30 students. Evaluate the air
available per student if the mixing factor is 0.3 and the experiments last for
3 hrs.
= 75 m³/student
Transcribed Image Text:(b) The laboratory is designed for use by 30 students. Evaluate the air available per student if the mixing factor is 0.3 and the experiments last for 3 hrs. = 75 m³/student
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