Answer Posted / mohammed fayaz
q=av
q= quantity of air (cfm)
V= velocity of air (fpm)
a= area of the room
velocity is =900 from ashrae notes
Ex;
4 tr
1tr = 400 cfm
4tr = 4*400= 1600 cfm
Q = 1600 CFM
V = 900 CFM
Q = AV
A = Q/V
A = 1600/900
1.77 Ft sq
TO convert in mt sq multiple with 0.093
1.77*0.093
= 0.165 mt sq
assume that the duct ht is 0.3
u ll get 55 X 30 cm duct size.
thats it
Is This Answer Correct ? | 50 Yes | 17 No |
Post New Answer View All Answers
Define Grashof number and its significance?
tell me about a time when u had too many things to do and u were required opinion prioritized your talks
Which instrument measures speed in a car?
Is Solid work and solid edge best programs for drawing? what is the difference bewteen them? r there better softwares?
What is the main purpose of an airspeed indicator in an aircraft?
What is meant by reflectivity?
What are the causes of damage to propellers?
i have an iterview on 18 sep for bhel ,pls send some questions asked during interview during the earlier interview on 11th sep
Why is it that the maximum value which the residual stress can reach is the elastic limit of the material ?
Why should we hire you over the others waiting to be interviewed?
What is hess law?
What are to be checked in an induction motor?
what is heat treatment and why is it done?
rrbchennaimodel question paper for current papers
What can be reasons for a metal gas-kit to leak?