Fan Definition and 338 Threads

Hai I am using a double shroud fan wheel for our application. what will be happened, if i use the same dimensions fan wheel with single shroud ?. can u clariffy for the same in the following points. 1. Discharge 2. Total Head or static head or Dynamic head 3. Power With regards...

hey guys, I'm new here but i was a bit stuck on thinking about how air flow is effected by a fan. it's probably a really simple question, but it's got my cobwebbed brain a bit stumped! my question is in two parts: 1. how does air flow relate to the design of a fan? ie, an answer with...

----bernoulli principle in fan---- when a fan is started, why is there more air flow at the bottom of the fan and not at the upper region of fan...:confused: >>Also explain if bernoulli principle is involved in this thx an regards arun

I am trying to control a 110V fan with a low voltage thermostat. I am pretty new to electrical theory... I would like a basic description of what I need and how to properly wire it. Thanks!

can anybody help me to find the answer of this question? a fan ( or a propellor) rotates sidewise, but the air goes making a perpendicular with the axis of its motion.. I know that there is vector involved in this, but how does it work?

(I think I've actually asked this before...):blushing: I have a standard 3 speed reversbile ceiling fan. The reverse switch of course changes it from blowing air up to blowing air down. What is the benefit of reversing the fan? Most people seem to think that it constitutes a difference...

"Bifurcated fan" What does the term "Bifurcated fan" actually mean? Please provide a link to some examples and or illustrations which clarify the term. The images and text I've seen using Google image search "Bifurcated fan" have shown....... 1. Axial fan with centered engine pod; front...

Suppose a fan was positioned to blow air out of a window so that window fit well around the fan. Why would this cool off a room?

When I heard Condi say this on Meet the Press http://www.msnbc.msn.com/id/14215314/page/2/ I kept thinking how I had just heard this recently for the first time. Now where did I hear that... hmmm... oh yes, I remember, it comes from Al Gore and his "Inconvenient Truth" ! :smile: :smile...

I forget, which direction do you set ceiling fans to spin (clockwise or counter looking from below) in teh summer? It's about 10,000 degrees and I am taking every measure not to die.

I was going to post this in the World Cup forum, but there isn't an appropriate thread. It is more of general interest than the WC, and applies to anyone traveling to some place unfamiliar. Soccer Fan Spends Six Hours Hunting for Hotel :rolleyes: Reuters Know where you are, and know where...

I was reading a discussion about heaters on another forum ages ago, one person claimed that there is a large difference in cost when running a thermostatically controlled oil filled radiator than an electric fan heater. Another person told him to contact the Institute of Physics and inform them...

Hey everyone i was just wondering, for future reference, which type of fan generally yields the greatest output velocity/volumetric flowrate and a relatively low pressure drop (ie like +/- 10kpa sort of thing), assuming axial speed is the same for each of the general types of fans. This would be...

Is anyone else a fan of the bow and arrow? For the past two months I've been archery-happy, spending most of my free time target shooting in the back yard, making arrows, fixing arrows, making bowstrings, googling the subject and shopping for archery stuff at the weekend swap meets here...

If one has a cooling fan that uses 6 kW, does that automatically mean that the room receives 6 kW worth of heat?

Hi, :approve: I want to do porject for Turbo Fan, so I need some information about it. If you could help me, please don't shame and gimme me this information to help me. Thanks,:smile: I appreciate it:biggrin:

I've become particulary fond of these, 3x3 boxes with 3x3 boxes in each and you must have 1-9 vertical, horizontal and in each 3x3 box. I'm sure most have seen it before. The link below provides a program for it. I average 12 minutes on hard puzzles. http://www.sudoku.com/

I need help in identifying this electric fan motor and its parts for a project documentation. Please see the pictures. http://img.photobucket.com/albums/v196/malinis/DSC00093.jpg http://img.photobucket.com/albums/v196/malinis/DSC00094.jpg I would like to ask: - What specific kind...

Not sure if this is in the right topic, but does anyone know the difference between a fan and a pump? I'm working on something where I need to distinguish a fan from a pump. I need to do so without limiting the pump to any specific type. Basically I need to allow for a piston & cylinder type...

First, I'm not an engineer, so, please excuse my lay terminology. Nonetheless, I thank you for any thoughts you can offer me, as I certainly need some help here. I'm working on a project where I need to spin a 4"-6" fan blade, enough to create about 250 (more is even better) cfm of airflow ...

I often hear people suggest switching the direction of a ceiling fan from 'blow' to 'suck' or the reverse, thinking that one will draw cool air in better. My intuition tells me that: - a ceiling fan blows air in a doughnut patterrn, where air flows either up in the centre or down in the...

It is really hot, and humid here. I have my fan running almost constantly. Ever since I was a kid (well I am still kind of young) I have talked into my fan and got a kick out of hearing my distored alien voice. I was wondering what is the physics behind this distorsion? I was thinking that...

Ok. so say you have a fan that is moving air, at 1 atm, at about 10 m/s. what exactly happens to the pressure? does it change at all or...?

An electric fan is running on HIGH. After fan has been running of 13.2 minutes, the LOW button is pushed. The fan slows down to 98 rad/sec in 1.83 seconds. The blades of the fan have a radius of 0.62 meters and their deceleration rate is 42.3 rad/sec2. What was the initial angular speed of...

I've never been a fan of Eurovision, but I usually end up watching it for whatever reason (being outvoted by girls, usually). But last year, two things about Eurovision dawned on me. Firstly, the voting is entirely political. Now I'm not being a sore loser here, and in fact, I was positively...

basically i want to know for a fan whether the air flow created is more reliant on speed or torque, if there's some sort of equation out there that'd be helpful too! Thanks.

I list the question one by one. I hope this is a good arrangment. 1.The blades of a fan is rotating in an anti-clockwise direction. Its motion is frozen with a strobe frquency of 1000 Hz without a change in appearance. Which of the following is not a possible rate at which the wheel is...

Now this guy here is a true and loyal fan of his team : http://www.mirror.co.uk/news/24by7panews/tm_objectid=15165311&method=full&siteid=50143&headline=welsh-rugby-fan-cuts-off-testicles-after-win-name_page.html WARNING : Possibly scary stuff below... What is the most you'd do to show...

Hey guys; When I was really young, I saw on a TV a guy who had a gas-powered fan mounted on to his back, and he could ontrol the throttle with somethin in his hand. He got on rollerblades and could zoom around a track at pretty decent speeds (30+ mph). There was no stopping mechanism...

Why is the airflow of a fan (a regular house fan for instance) stronger on one side than it is the other? I think it has something to do with the fact that the airflow is a vortex, but I don't understand how this creates uneven airflow. Thanks

I am doing an investigation into the air flow from a fan in my physics class. I need to know why the reason why air flows in a vortex shape from the fan (in physics terms), and what equations I can investigate (anything, e.g thrust etc). Also, I believe the airflow from a fan can be...

ever saw this one? :smile:

hey, i am a year 11 student, we have an assignment where we must build a fan (non electric) that will spin once wind from a wind tunnel in blown onto it...Now i know this may sound rather simple, and it probably is...but i am just looking for some guidlines on how to make a fan that will WORK...

Shouldn't the end product of a system with such symmetry be more randomized than the initial?

This is not really a poll, but step forward and be counted as being in the anti_crank fan club! Ahem. Me!

Hey people i have recently purchased "up and around the bend, the definitive hanoi rocks collection" I think they where absolutely brilliant and the most underated band in history, their material is so unique, considering they are an 80's band. Has anyone else heard of these guys? If so...

I have to say, there are few people from whom I find inspiration, but Larry Walters is definitely on the list. http://www.markbarry.com/amazing/lawnchairman.html If anyone knows of any other under-dogs who fulfilled their life-long dreams (despite the odds), let me know who these people...

i just woke up and i looked at my electric fan...and noticed a lot of dust had accumulated on the fan...anyone haf any idea y? shouldn't the wind generated from the fan blow the dust away?