Fan & motor CALCULATIONS, Pulley size, RPM, air flow rate cfm hvac rtu

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In this video we learn how to calculate the pulley diameters for motors and fans as well as their RPM and what the air flow rate will be. This can be applied to fans, ahu's and fan coil units within HVAC industry.
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Опубликовано:

6 июл 2017

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Комментарии : 69

@EngineeringMindset 7 лет назад

⚠️ *Found this video super useful?* Buy Paul a coffee to say thanks: ☕ PayPal: www.paypal.me/TheEngineerinMindset

@EngineeringMindset 5 лет назад

⚠️Learn *FAN PULLEY CALCULATIONS* here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yxCBhD9nguw.html ⚠️

@JohnDowelll 4 года назад

My instructor at North Carolina A & T Univ introduced me to this channel. Very good material here!

@ibrahimwrites 6 лет назад

found your channel at the right time thanks so much for this🙋

@khaleejkha4026 7 лет назад

Thanks sir it's helping us a lot.

@user-bp4sf1sn3k 4 года назад

You are the greatest educator in HVAC field

@warissirkhot5955 5 лет назад

Best teacher I ever came across..can u pls explain about air pressure in duct(static and velocity pressure)...relation between air pressure,air velocity and CFM....I'll be really greatfull...im surely gonna recommend this channel to all my friends in this field

@nurfetalic205 7 лет назад

You are the greatest educator in HVAC field. Fantastic video's Thank you

@tintinfan007 4 года назад

exactly

@bowwow255 5 лет назад

can i use bike chain system to gain velocity on fan from cooler motor

@bhanupratap3828 6 лет назад

How to calculate can motor power from esp in hvac. Will u explain

@madhuk-art3183 7 лет назад

make video on HOW TO SELECT FAN FOR DIFFERENT APPLICATION ?

@souravkumar2522 6 лет назад

Nice

@Scorpio888 6 лет назад

Sir i have 29 hp d engine 2200 rpm with 6 inch pulley. Tell me water fan pulley size? Because i have 8 inch water fan pulley. In this position tube well water though is best but engine on some fast speed?

@CanadaBud23 4 года назад

How are you measuring the pulley diameter? Bottom of the groove, the edge or with the belt on the pulleys??

@Tamilsongs2813 3 года назад

SUPER SIR TNX LOT

@anshulkumar-kl4pr 6 лет назад

How to calculate motor power for new centrifugal pp and air blower

@georgethomas7547 5 лет назад

Can you please do carparks with jetfans and ducted ones

@ariefsyahrizal3645 2 года назад

Does fan size (the diameter of the propeller) affect the airflows ? How these variables correlate at each other ?

@jasonanderson7343 7 лет назад

Fantastic video, maybe you could do a video on duct pressure loss calculations which ties up to fan selection. great job

@EngineeringMindset 7 лет назад

I'll add it to the list great idea

@crawling309 7 лет назад

Jason Anderson yeah! I want it too.

@arielmcdowny2367 3 года назад

@@EngineeringMindset yow I've been waiting for so long. You didn't make the video

@mrhackitunler 5 лет назад

At 3:55 you can‘t say % (it is 94% Or 0,94 But Not 0,94%). But Nice Video :).

@ankitkumar-ol9lp 3 года назад

Sir, how to select motor for any centrifugal fan

@SpatialGuy77 4 года назад

PS - what about calculating the ratio of motor and fan pulleys to achieve a desired CFM. Also, how to calculate existing CFM if not stated.

@envitech02 3 года назад

Measure the fan capacity with an anemometer. We provide that service.

@miguelrasmijn2829 7 лет назад

Hello my name is miguel i'm from aruba thank you for all the vídeos,they are helping me alot keep the good work.

@EngineeringMindset 7 лет назад

Hi Miguel, that's great to hear people all over the world are learning from my shared knowledge.

@NitishKumar-nq1pw 5 лет назад

can you tell me how can i design a centrifugal blower body completely from scratch?

@justintaylor2000 4 года назад

Good Day, I meet with a customer today and they have 3535 RPM 40HP Motor that has to drive a Roots 56 URAIL Blower. they want pulleys on both components. Can you help me out.

@IceyJunior 5 лет назад

Hi Paul, for equations at 4:30, is there any typo?

@EngineeringMindset 5 лет назад

no, I don't think so?

@Vandalfoe 4 года назад

Yes. It should be 111%, not 1.11%. The increase is 11%, or multiply by 1.11, or its 111% of the old.

@Vandalfoe 4 года назад

The other calcs are done similarly. However, its semantics.

@LawatheMEid 4 года назад

how to calculate the flow of the fan?

@ahmadtaufiqhidayatullah9401 2 года назад

I have a question, what's happen if diameter of fan pulley doesn't match with diameter of pulley motor? Thanks before

@shiridharan 2 года назад

How to choose motor size when the blower wheel material differs. It is centrifugal fan DIDW Double Inlet. Existing blower fan is made from aluminium material (67kg including shaft) which later replaced with blower fan made from mild steel material (93kg including shaft). Now how to determine the horsepower of the motor since new blower wheel will be heavier. Everything else remain same except the blower wheel weight.

@LoveZick 6 лет назад

Hey! I hope your new videos have a much better audio quality. I couldn't here a thigh so I'll wait till I get home to actually comment on the content. 👍

@EngineeringMindset 6 лет назад

What device are you using? Tested on iphone, laptop, LG and tablet and audio is fine.

@realvanman1 6 лет назад

Thighs are usually pretty quiet, though sometimes knees make some noise :)

@johngiam 7 лет назад

can you advise on belt slippage?

@EngineeringMindset 7 лет назад

If it's slipping then tighten it. Check its clean and nothing is causing it to slip, buy a deflection guage and check with manufacturer for allowable deflection but 3-5mm is typical

@johngiam 7 лет назад

what about new belt, when choosing pulley size, how much belt slippage should we factor? 3~5% of Driving RPM?

@rakshitanikam100 3 года назад

can you explain the blower design procedure, please..

@ariefsyahrizal3645 2 года назад

Sir do u have any suggestions now ? I kinda hard to believe it is such a pain to search design procedure of a fan as a cooling device to reject heat out from a generator. My schematic system was pretty simple since it doesn't need any motor. The fan will be installed on the rotor inside a generator to circulate the air. But I don't know how to choose the proper design and sizing of the fan.

@tintinfan007 4 года назад

fan-tastic

@mayurpatel7234 3 года назад

How to find motor pulley pcd??

@justinn7777 3 года назад

Hey can u please help me. Two fans. 2000 CFM @ 15 psi 200 CFM @ 200 psi Which one is expensive and why.

@KatherineMorgan-uv1bt 2 месяца назад

I need to know what size motor I need for a I need to know what size motor I need for a air compressor pump the pump is 175 lb

@rovi4858 5 лет назад

how many watts is need it for a car alternator to start?

@EngineeringMindset 3 года назад

Check our our new car battery explained video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-VnPRX5zQWLw.html

@srisakthifans5624 3 года назад

Sir. .how calculat..fan rpm..can you rply mee

@chippyjohn1 2 года назад

Thought this was how to calculate fan displacement. You already know the displacement, this is just calculating a new ratio.

@hashadkh8865 3 года назад

This is as per which standard.. Anybody please replay.

@shaukathayat749 7 лет назад

wonderful channel ...plz make video about chilled water pump head and it's calculation...will be thankful

@EngineeringMindset 7 лет назад

We just finished our pump calculation video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-99vikjRrlgo.html

@shaukathayat749 7 лет назад

+The Engineering Mindset Thanks a lot.

@themonkeydrunken 3 года назад

Thanks mate, hard to hear you though, even with the volume up all the way :(

@juliocv719 5 лет назад

4"pulley

@joshdaniel1778 3 месяца назад

🎉

@shivamkudarha1160 6 лет назад

If i have a 1440 RPM motor and i want 1000 RPM in my machine. So how can i reduce motor RPM ?? Describe with formula please

@EngineeringMindset 6 лет назад

variable frequency drive

@EngineeringMindset 4 года назад

VFD Video is now live! here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yEPe7RDtkgo.html

@naveench9543 3 года назад

What is metric ,what is imperial

@niazahmad350 5 лет назад

Can you improve the sounds of your video a bit higher? Its very heard to hear

@sunilsoren1007 9 месяцев назад

Apka awaj nahi hai .

@skumarsahani498 3 года назад

Hindi me btaiye

@SpatialGuy77 4 года назад

Aaaargh - Don’t move the mouse like an maniac - slow and deliberate then stop ✋. Like talking with your hands, you’re talking with your mouse - annoying and pointless (excuse pun) Cheers SG