When I was a kid I went to a school which had an unusually large gymnasium for a k-9 school. On one side of the gym behind the risers was a large grate, behind it was a creepy looking padded room with all sorts of dampers and Louvers that when open in the right combination would create a vacuum effect at the grate. I still remember many paper objects finding their way through the grate while girls would fan out their long hair across it. It was a thing of wonder. The best part would be whenever the custodian would power it back on after cleaning.. the whining groan of that big old motor echoing through the gym followed the roar of air moving through the massive round ducts on the ceiling. Been into HVAC and electrical ever since!
I remember my elementary/middle school gym had huge ceiling fans- these were hooked into a system of heat exchangers for presumably heating Gym was built in 1952
My house has emerson whole house or what ever mounted above the stairs and it is a 19 something modle idk but every time my dad turned it on it would just go VROOOM BRUUUM and make a lot of noise even in low or high and I never seen how many blades it has but it blows into the attic and has a grate on it so when on the shutters will open to let airflow very cool
Similar experience here. My grade school had a Coal fired Columbus Heat Vent furnace. I would sneek away during recess & visit Carl the janitor in the furnace room. I'm sure he got tired of endless questions. That huge fire breathing machine fascinated me! I later had enjoyable career in the HVAC field. THANKS Carl!
@@grovecitysirens_GCSA louver is a type of register or grate fitted with angled slats that allow air to enter, but not rain or direct sunlight. A damper is a valve that regulates airflow in a duct using a movable plate. This plate can be adjusted to let a precise amount of air be supplied to a specific area of the building. They are either inside of the duct, where they are adjusted by a remote control, or attached to a register where they can be adjusted manually. I hope this helps.
It starts up, then (for some reason) it slows down, and then 1:58 comes around and the motor is like “GAS GAS GAS I’M GONNA STEP ON THE GAS”. That’s basically how this video goes.
The air make-up section of an air handler; damper on the left is regulating fresh air intake. No clue what kind of blower wheel that is. They’ve got a VFD on the blower motor here too so a tad more efficient and noisy than the old full throttle or nothing system. The controls people who engineer the pneumatic systems which regulate the dampers, valves and motor controls in sequence are wizards in their own right. The first time I saw inside a control panel for a system like this I was blown away no pun intended!
@@ag6371 what would be the direction of air flow? Thought it was odd to see what looks like the rear disk of an impeller guessing there would be a port directly in front of it on the opposite side?
I believe it does. In the beginning you can hear the frequency changes as it comes up to speed. Also on deceleration you can hear different drive frequencies. So it's got to be either a VFD or a soft starter.
It is a return fan which pulls air from the building and blows it either outside to exhaust the building or into the air handler. The air handler has a supply fan in it which blows air into the building to supply diffusers and pulls in outside air or air from the return fan.
They are the exhaust dampers. There are also return dampers that you can't see in the video. They both modulate together to decide how much air is being exhausted from the building to control the building pressure.
When I was a kid I went to a school which had an unusually large gymnasium for a k-9 school. On one side of the gym behind the risers was a large grate, behind it was a creepy looking padded room with all sorts of dampers and Louvers that when open in the right combination would create a vacuum effect at the grate. I still remember many paper objects finding their way through the grate while girls would fan out their long hair across it. It was a thing of wonder. The best part would be whenever the custodian would power it back on after cleaning.. the whining groan of that big old motor echoing through the gym followed the roar of air moving through the massive round ducts on the ceiling. Been into HVAC and electrical ever since!
I remember my elementary/middle school gym had huge ceiling fans- these were hooked into a system of heat exchangers for presumably heating
Gym was built in 1952
Hmm interesting
What are dampers and louvers
My house has emerson whole house or what ever mounted above the stairs and it is a 19 something modle idk but every time my dad turned it on it would just go VROOOM BRUUUM and make a lot of noise even in low or high and I never seen how many blades it has but it blows into the attic and has a grate on it so when on the shutters will open to let airflow very cool
Similar experience here. My grade school had a Coal fired Columbus Heat Vent furnace. I would sneek away during recess & visit Carl the janitor in the furnace room. I'm sure he got tired of endless questions. That huge fire breathing machine fascinated me! I later had enjoyable career in the HVAC field. THANKS Carl!
@@grovecitysirens_GCSA louver is a type of register or grate fitted with angled slats that allow air to enter, but not rain or direct sunlight. A damper is a valve that regulates airflow in a duct using a movable plate. This plate can be adjusted to let a precise amount of air be supplied to a specific area of the building. They are either inside of the duct, where they are adjusted by a remote control, or attached to a register where they can be adjusted manually. I hope this helps.
The school pc when you start a game or anything that's not word or excel
and good tablets really don't cost much anymore
Well i do parts of IT where i study. We don’t get a lot of budget at all and always have to get second hand decommissioned business units.
Or powerpoint
Task manager
I just wanna say that im a huge fan of this video.
Haha
“Huge fan”
This comment deserves more likes
This sucks! Or is it blowing? I'm unsure!
It starts up, then (for some reason) it slows down, and then 1:58 comes around and the motor is like “GAS GAS GAS I’M GONNA STEP ON THE GAS”. That’s basically how this video goes.
You can actually see the slats (on the left) move as the fan increases/decreases in speed
This is an air Handler unit the slats are dampers that are regulated independently of the motor by the bms
Yeah air flow doesn't affect those they affect the air flow.
The air make-up section of an air handler; damper on the left is regulating fresh air intake. No clue what kind of blower wheel that is. They’ve got a VFD on the blower motor here too so a tad more efficient and noisy than the old full throttle or nothing system.
The controls people who engineer the pneumatic systems which regulate the dampers, valves and motor controls in sequence are wizards in their own right. The first time I saw inside a control panel for a system like this I was blown away no pun intended!
burningdust This is actually an AHU exhaust blower
@@ag6371 what would be the direction of air flow? Thought it was odd to see what looks like the rear disk of an impeller guessing there would be a port directly in front of it on the opposite side?
it sounds like one of those southeastern trains when they get up to speed
Eeeeeeee
why is this so satisfying
It's like an airplane engine 😂
I thought this was a coffin in the thumbnail
Same-
Coffin belt shroud goes hard af.
Oh that's neat and I've been to the zoo in san Antonio and saw a huge fan like that. Love ❤️❤️ fans
Looks like a coffin
I’m your biggest fan 
this looks similar to a parking garage vent fan
Never seen a disc fan before. I agree with the other people who have commented , that motor sounds like a train. Does that motor have a VF drive?
I believe it does. In the beginning you can hear the frequency changes as it comes up to speed. Also on deceleration you can hear different drive frequencies. So it's got to be either a VFD or a soft starter.
Its an impeller fan thats why its shaped like that
This doesn't even look like a fan.
It just looks like a huge metal plate
It’s an impeller fan
@@anthonybush3134 oh ok
In my opinion I think it is a large flywheel spinning and the awesome fan starting sounds like the airplane take off and fire department siren
bruh sounds like an elertric train
looks like the inside of an air handler
The blade that huge fan has is an impeller
Does this blow from outside to the supply diffusers?
It is a return fan which pulls air from the building and blows it either outside to exhaust the building or into the air handler. The air handler has a supply fan in it which blows air into the building to supply diffusers and pulls in outside air or air from the return fan.
@@spinningfans873 What are those dampers on the left for?
They are the exhaust dampers. There are also return dampers that you can't see in the video. They both modulate together to decide how much air is being exhausted from the building to control the building pressure.
0:16, when i move my mouse 1 pixel away from where it originally was
What is this big fan for?
Belt cage looks like a coffin.
Tru
Just in case you get caught in the belt it'll be easy to move your body, or symbolizing why you should stay away 😁
@@DaneH64 lol yes that’s also true!
My 22 year old pc running a high quality Roblox game:
La cubierta de las correas parece un ataúd jajaj
was suggested to me ... I don't know why ;-)
What is that supposed to be for😅❓
What is that for? My pc?
You leave my PS3 fan alone!
Noisy circle starting up. Don’t fans have blades?
The blades are probably around it
where is the fan?
The big ass thing spinning around dead centre.
@@skylined5534 :D you nailed it man .
@@skylined5534I think he meant where in a building is this fan
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