Air Ballance HVAC 29-0

[@designereats3661]

Please keep making more videos. This is helpful!

[@hvac01453]

also, these returns should never be connected to the return air system, but rather, be designated as exhaust. Keeping in mind that all exhaust must be made up.

[@rezamohammadi956]

And we must install filters in the way to atmosphere too.

[@hvac01453]

I didn't know that...

[@grivas1161]

Great vid Marty but be advised that per FGI Guidelines / ASHRAE and every State code i know, Laboratories must be designed to have negative pressure, not positive.

[@shkwaseem1571]

This is it
you did best
you explained simple but the knowledge were more in this video
thank-you

[@lgg6email871]

Very useful & Easy to understand

[@bjornosterlund9354]

Nice and instructive video, I hope I can use the part since we manufacure monitoring systems for this aplication I really liked the simplicity

[@MartyHuie]

Not sure what you’re asking, thank you for the compliment

[@grfrjiglstan]

Boy, this aged well.

[@Khaledajarrar]

Perfect explanation thank you

[@bakytorazymbet3690]

Thanks a lot
But I think last two schemes are confused

[@MartyHuie]

I am just an architect. That is left up to my team. This is just a big pitcher look so arch. can understand what to look for

[@karinamiranda3887]

Good

[@MartyHuie]

1st of all I read this on my phone and meant to come back and reply and forgot, sorry
LOL LOL Sorry for LOL but that is way over my head. I am not a Mechanical engineer only an architect, the video was basically really for architects understanding what their engineers are doing. Architects have to answer to clients many times on cost and wanting to make sure everyone understands where dampers go also
My initial thought on your question, is I don't believe you're allowed to have return air in isolation, it should be exhausted we do not want to contaminate other people with the airborne illness of the person in the room. Now for talking positive pressure i.e. the room needs to be cleaner than the corridor I don't know that answer for sure with a positive pressure room you could return the air but a negative pressure room I believe it needs to be hundred percent exhausted

[@shkwaseem1571]

In the hospitals
the The return air totally goes to air but through the lowers which filters the air HEPA filters are used
first thing why you r watching this video as you said your not from technical field

[@hvac01453]

would just like to note you used a return symbol for the supply @5:17, otherwise great info especially with Covid19 as a concern.

[@Eggemeyers]

Is that a Lamy fountain pen?

[@anshusingh8898]

SIR THANKS FOR THIS VIDEO.
I Want to know about how measured the duct size and its area.

[@yashaswiniengineeringservi7296]

thank you sir

[@sumitdubey8963]

Is it any book which is good in air balance

[@nholdrcflyingandtouradvent9009]

hi what was the ratio of CFM needed if I had a 100% return air to cool a certain room, specially for isolation room application for both positive and negative.

[@deepanshusharma9776]

+Arnold Villamin : hey hi arnold may i know what ratio you are talking about. Because if you have 100 % return then your equipment will cool the air. and if you are asking that how much fresh air do we need to create the positive or negative pressure then i know the ans.

[@nholdrcflyingandtouradvent9009]

Oh yes my package was a 100% fresh air return. What was my CFM ratio per square meter.

[@sumitdubey8963]

Hello sir, Could you tell me how to calculate how much air suck from room to create negative pressure in room

[@MartyHuie]

it needs to be more than what your supplying. what is your test & balance report shows and the supply and return air for that space

[@alexv5229]

Do you guys make good money doing this for a living???

[@MartyHuie]

Not sure what you’re asking. It’s only one person, me doing the videos as I learn things or as I have to explain things to colleagues. And no I do not make any money off of these videos I will if I do it’s pennies. They are RUclips monetized but literally I probably make $50 a year from RUclips. Why are you asking is this a joke? :-)

[@TanweerAhmed]

Good