How Cooling Towers Work (Working Principle)
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- เผยแพร่เมื่อ 8 ก.ค. 2024
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This video explains how cooling towers work and the working principle behind all wet type cooling towers. This is an ideal video for HVAC, Power Plant Engineering and Chemical Engineering viewers (and many other industries).
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▶️Why do we need cooling towers?
Cooling towers are used to reject heat from a building or process. Large residential buildings require cooling towers to reject heat. The heat is generated by electrical equipment inside the building, the generation of heat by humans and also the heat generated through solar gain -which is the heating of the building by the sun-.
But residential buildings are not the only places where heat must be rejected. Large power stations use cooling towers to reject heat and almost all modern industrial processes require some means of rejecting heat.
Evaporative Cooling
Evaporative cooling is the fundamental working principle of all wet type cooling towers. When water evaporates, it cools the molecules surrounding it; this is known as evaporative cooling. If you lick the back of your hand and blow across it, you will notice that your hand feels cooler as the water evaporates. When animals perspire (sweat), the effect is the same, perspiration builds upon the skin and the body is cooled as the water evaporates.
We will now look at how we can apply this principle to a cooling tower to understand just how cooling towers work.
How Cooling Towers Work (Working Principle)
Cool cooling water is pumped from the cooling tower basin to the process. The cool cooling water is heated by the process and its temperature increases. The warm cooling water is then pumped back to the cooling tower to be cooled.
The incoming warm water enters the distribution manifold and is discharged through spray nozzles inside the tower. The spray nozzles spray the warm water evenly over the entire fill. The water passes downwards through the fill whilst air passes upwards. As the water travels through the fill, some of it evaporates which causes the remaining water to be cooled; this is the evaporative cooling effect we discussed earlier. The cooled water that did not evaporate falls into the collection basin due to gravity, whilst the air continues its path upwards, through the drift eliminator, through the axial fan, then exits through the top of the tower.
To recap, water enters the tower and travels downwards. Air is induced into the base of the tower by a fan and travels upwards. Some of the water evaporates as it passes through the fill and this cools the remaining water that falls into the basin. A portion of the evaporated water is reclaimed by the drift eliminator, whilst the rest is discharged through the top of the tower as drift. That is how a counter flow induced draft cooling tower works, there are other cooling tower designs commonly used, but the working principles are similar.
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I’ve watched a lot of things.
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Thank you so much for explaining how cooling tower works! Great presentation.
These videos deepens my understanding in Engineering ❤
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Amazing video. Please keep making videos like this
These are really informative videos, Sir, I really appreciated your knowledge, as well as your goodwill to share it.
My pleasure
Good video, I like this video sir, very helpful for me, I am HVAC and Central AC Worker, thank u sir.
This is great!
Very informative thank you!
Thank you
Excellent video.
This is a brilliant video. Very informative.
Glad you enjoyed it
thank you Sir
Thanks for your sharing
Legendary video!
Thanks a lot
impressive, very nice
Nice opening shot of Bangkok with Chong Nonsi BTS station and the Belgian embassy prominently in view.
Good!
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Thanks for watching!
Thanks
Incredible videos.. Keep up the awesome work. Which software do you use for making 3d animations..?
Good
Vrey good.
Your paid course looks interesting. Do include topics such as Chillers & AHUs in the future.
great
Please make a detailed video on centrifugal vane type chiller especially on its oil circuit and oil reclaim system. Thanks
very good explanation but , what about the make up water is it used directly to the process ? and if it so , is this water is cooled and treated enough to be used for the process
Já trabalhei com torre aqui no Brazil e pretendo ir para o Estados Unidos trabalhar com isso
Please make a video for Deodorization unit for edible oil refinery
Hi...does the noise the axial fan make say for example in a Kelvion Gas cooler...differ during the year...as in makes less noise in winter and more in summer...thx
근래 찾아본 자료중 고퀄그래픽이라 맘에듭니다. 한국어 지원도 있으면 좋겠습니다
What does the water in the basin of the cooling tower supply? Howcome that 'cool' water gains heat gain?
It's weird that in an energy-starving world, we can afford to just lose the thermal energy of water and not use it for something else.
What is the role of fan ?
I just finished a year of Hvac/refrigeration school n got my universal tech license. I got offered cooling towers maintenance n start tomorrow. Am I on the right path or should I be doing something different?
What u are doing right know?
0:25 what city is this?
I believe that the drift eliminators do not actually collect the evaporated gaseous water at all as it just goes past the eliminators. No condensation occurs in the drift eliminators unless they are cooled internally.
The function of the drift eliminators is to create larger aggregate droplets from the smaller droplets until the droplets become so heavy that they fall down.
Coalesce would have been a good term. Anyway, I love your videos and they are very informative. Although I often don’t really have to know how a particular equipment works, I really like that I always learn these general design aspects and sub-solutions that you explain in the videos.
@@peckdec
Thank you for the extra info on drift eliminators!
well, water is still in liquid phase so why wouldn't it collect ?
@@hamzaiqbal8948 It will collect, but it does not condense at the drift eliminators because condensation means transition from vapor to liquid.
Would it work when the incoming air is already 100% saturated ? Its operation, I believe, is heavily dependent on the degree of saturation of the incoming air.
In a perfect 100% saturated condition, it would not work.
@@savree-3d hi I have a question that needs a quick response, will I get a quick reply if I email?
I have 100-150 TR Industrial Cooling Tower requirement in my manufacturing unit in Maharashtra near Amravati. Can you please let me know the overall cost associated with this range of cooling tower. Also if you offer Softening plant would be great.
if you have cooling tower needed, pls kindly contact us
Apollo technology we treat water for cooling towers and we do deep clean with presurewahser to keep real clean long time running .. Apollo technology awt
Hi John/Savree, I would like to subscribe for one month course... Is there any other payment method other than credit card like upi Or debit card?? I don't have a credit card to subscribe for your courses....i am awaiting your response... Thanks
I’m searching for sea water cooling tower ( salt water)
Joen
Thanks