Hellow guys, Welcome to my website, and you are watching How Natural Draft Cooling Towers Work (Stack Effect). and this vIdeo is uploaded by saVRee at 2019-06-04T07:56:21-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
| Name | How Natural Draft Cooling Towers Work (Stack Effect) |
| Video Uploader | Video From saVRee |
| Upload Date | This Video Uploaded At 04-06-2019 10:56:21 |
| Video Discription | Want to continue learning about engineering with videos like this one? Then visit: https://courses.savree.com/ Want to teach/instruct with the 3D models shown in this video? Then visit: https://savree.com/en ################################################### Learn how natural draft cooling towers work! This 3D animated video shows you exactly how a natural draft cooling tower works! You will learn all of a natural draft cooling tower's main parts, how it works and some of its design features. Like this video? Then check out our other videos! 🚢 Marine Diesel Two Stroke Engine - How it Works! - https://youtu.be/IM8rxp8qB8k 🚢 Ship Parts and Terminology Explained! - https://youtu.be/Xm-F2rPU_NU ⚙️How Deaerators Work! - https://youtu.be/M_jOsTWVIH8 ⚙️How Shell and Tube Heat Exchangers Work! - https://youtu.be/OyQ3SaU4KKU ⚙️How Power Grids Work! - https://youtu.be/fUWRyhsutL8 ⚙️How Watertube Boilers Work! - https://youtu.be/fUWRyhsutL8 ⚙️How Dams Work (Hydro Dams)! - https://youtu.be/ztM6tL6LtFs 💡Control Valve Types (Gate Valve, Globe Valve etc.)! - https://youtu.be/OyQ3SaU4KKU 💡Transformer Parts and Functions! - https://youtu.be/3osmO4FQ2Yg 💡Plate Heat Exchangers Explained! - https://youtu.be/7TTF4aU3Pcs 📚Want to learn more about engineering? Then join saVRee to access over 45 hours of engineering video courses! New courses every month! https://courses.savree.com/ Hope to see you on a course soon! 👋 🏫Want to use the 3D model in this video to present, instruct, or teach? Simply join saVRee! We have over 400 engineering models that will make your life a lot easier! https://savree.com/ 📖You can learn more about engineering in our technical encyclopaedia: https://savree.com/en/encyclopedia ▶️How Natural Draft Cooling Towers Work Natural draft cooling towers (‘natural convection cooling towers’) use the principle of convective flow to provide air circulation. Natural draft towers are usually very tall in order to induce adequate air flow, they are also expensive to construct and are only used for applications where a large constant cooling requirement over many years is required; a thermal power plant is one such application. We will use a thermal power plant natural draft cooling tower to describe how this type of tower works. Cool cooling water is pumped from the cooling tower basin to the power plant. The cool cooling water is heated by the process and its temperature increases. The warm cooling water is now pumped back to the cooling tower to be cooled. The incoming warm water is distributed through spray nozzles inside the tower. The spray nozzles spray the warm water evenly over the entire fill. 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 evaporative cooling. As air travels through the fill, its temperature increases, and it rises to the top of the cooling tower due to the stack effect (hot air is less dense than cool air and thus rises above it). The air exiting the top of the tower draws in more air at the base of the tower, creating a natural air flow from the base to the top of the tower; this is the stack effect and it is continuous providing cooling water is constantly circulated. The purpose of the spray nozzles and fill is to increase the contact surface area between the water and air. A large contact surface area yields a much greater heat transfer capacity. All heat exchangers rely upon a large contact surface area between what is being cooled and the cooling medium. Another important part of the cooling tower is the drift eliminator. The white plume exiting this cooling tower is not smoke, it is actually moisture, specifically it is the cooling water that has evaporated. Water losses associated with evaporation can be quite large; these water losses are referred to as drift. In order to reduce these losses, a drift eliminator is used. Drift eliminators consist of parallel blades arranged on the air discharge side of the tower to remove entrained water droplets from the exiting air stream. The shape of the drift eliminator requires the entrained water droplets to change direction several times prior to being discharged out of the tower. Air has little problem changing direction and passing through the drift eliminator, but water droplets impinge upon the drift eliminator, condense, then drip back down onto the fill, then return to the cooling tower basin. Why do cooling towers have such weird shapes? You might be wondering why natural draft cooling towers have such a unique shape. Well, there are two reasons. The first reason is that the shape reduces the amount of construction material required when building such a large tower. The second reason that the paraboloid shape of the tower accelerates the air flow through the tower, which increases the tower’s cooling capacity. #saVRee #PowerEngineering #IndustrialEngineering |
| Category | Education |
| Tags | how natural draft cooling towers work | cooling tower | cooling towers | natural draft cooling tower | cooling | power plant | induced draft cooling tower | forced draft cooling tower | how cooling tower works | natural draft | cooling towers how they work | how it works | engineering | hvac | nuclear power plant | cooling tower how it works | cooling tower working principle | working of natural draft cooling tower | how natural draft cooling tower works | stack effect | chimney effect |
