Dear all experts!
I have a high-rise residential building which aim to comply with IEQ pre.1 by combining 2 ways.
1. Living room and dinning room will comply with natural ventilation: 4% operable window and within 25 feet.
2. Bedroom is completely closed, and not connect with any operable window, therefore we try to comply with IEQ pre.1 by trickle ventilation. It means that, we have Toilet exhaust fan (continously operated) and we want to prove that the bedroom will provide with fresh air through this exhaust fan (of course, we will calculate with Vbz=0.8).
=> The question is: is that complied with IEQ pre. 1 for all living room, dining room, and bedroom by the above methods?
=> and the next question is: that bedroom near the corridor (which is permanent open and connect with outdoor), so is this ok for providing fresh air through trickle ventilation by exhaust fan at toilet (as above mention) and fresh air taking from corridor which permanent open like that?
Looking forward to receiving your feedback. Thanks so much.
Andrew Mitchell, P.E.
PrincipalMitchell Gulledge Engineering, Inc.
LEEDuser Expert
126 thumbs up
March 31, 2016 - 9:25 am
If the make-up air being drawn in by the exhaust fan is outside air, then you can use it as mechanical ventilation by exhaust fan. The effectiveness will be 0.5 or 0.8 based on where your exhaust fan is in relation to the ventilated space. See the table in chapter 6.