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.
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.
Elementary Geometry for College Students
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ISBN:9781285195698
Author:Daniel C. Alexander, Geralyn M. Koeberlein
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Chapter8: Areas Of Polygons And Circles
Section8.5: More Area Relationships In The Circle
Problem 42E: A goat is tethered to a barn by a 12-ft chain. If the chain is connected to the barn at a point 6 ft...
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Answer is 1470 ft3/min or 41.7 m3/min
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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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(Please show calculation that leads to that answer)
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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