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Forced & Induced Draft Cooling Tower Video Lecture | Mass Transfer - Chemical Engineering

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FAQs on Forced & Induced Draft Cooling Tower Video Lecture - Mass Transfer - Chemical Engineering

1. What is a forced draft cooling tower?
Ans. A forced draft cooling tower is a type of cooling tower where a fan or blower is used to force the air through the tower. The fan is typically located at the top of the tower, and it helps to create a positive air pressure inside the tower. This positive pressure forces the air through the tower, enhancing the heat transfer process and improving the cooling efficiency.
2. What is an induced draft cooling tower?
Ans. An induced draft cooling tower is a type of cooling tower where a fan or blower is used to pull the air through the tower. The fan is typically located at the top of the tower, and it creates a negative pressure inside the tower. This negative pressure induces the air to flow through the tower, facilitating the heat transfer process and enhancing the cooling efficiency.
3. What are the advantages of forced draft cooling towers?
Ans. Forced draft cooling towers offer several advantages, including: - Higher cooling efficiency: The forced air flow created by the fan helps to enhance the heat transfer process, leading to better cooling efficiency. - Better control over air distribution: With a fan at the top, it is easier to control and direct the air flow throughout the tower. - Lower risk of recirculation: The forced air flow reduces the chances of air recirculation, which can hinder the cooling process. - Ability to handle higher temperatures: Forced draft cooling towers are suitable for applications where higher water temperatures need to be cooled efficiently.
4. What are the advantages of induced draft cooling towers?
Ans. Induced draft cooling towers offer several advantages, including: - Lower power consumption: Since the fan is located at the top, it requires less power to pull the air through the tower compared to a fan at the bottom in forced draft cooling towers. - Reduced water loss: The induced air flow helps to create a better seal at the top of the tower, reducing water loss due to evaporation. - Lower noise levels: The fan at the top of the tower reduces noise levels compared to a fan at the bottom. - Ease of maintenance: Induced draft cooling towers are typically easier to access and maintain due to the fan's location at the top.
5. Which type of cooling tower is more commonly used in industrial applications?
Ans. Both forced draft and induced draft cooling towers are commonly used in industrial applications, but the choice depends on specific requirements. Forced draft cooling towers are often preferred when higher cooling efficiency and better control over air distribution are desired. On the other hand, induced draft cooling towers are often chosen for their lower power consumption, reduced water loss, and ease of maintenance. The selection is typically based on factors such as the cooling load, available space, and desired operational efficiency.
29 videos|45 docs|44 tests
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