Iduced Draft Cooling Tower Power Point Presentation

Induced Draft Cooling Tower Presentation

Introduction:
The Induced Draft Cooling Tower presentation aims to offer an in-depth analysis of one of the most critical components in industrial cooling systems. Induced draft cooling towers are pivotal in dissipating unwanted heat into the atmosphere, making them essential in industries such as power generation, petrochemical, and manufacturing. This presentation will delve into the nuances of these towers, covering their design, operation, benefits, maintenance, and environmental impact.

1. Principles of Evaporative Cooling:
To understand induced draft cooling towers, it’s essential to grasp the principles of evaporative cooling. This section explains how heat is absorbed when water evaporates, thereby cooling the remaining water. The basic thermodynamic principles and the role of latent heat of vaporization are covered in detail, providing the foundation for understanding cooling tower operations.

2. Structural Components of Induced Draft Cooling Towers:
Induced draft cooling towers consist of several critical components working in harmony to achieve efficient cooling. This section breaks down the structural elements, including:

Tower Structure: The physical framework that supports the tower, often constructed from materials like concrete, steel, or fiberglass.
Fan Assembly: Positioned at the top of the tower, these fans draw air upward through the tower, facilitating the evaporative cooling process.
Fill Media: Increases the surface area of water exposed to air, enhancing the heat transfer efficiency.
Water Distribution System: Ensures even distribution of water over the fill media.
Drift Eliminators: Minimize water loss by capturing water droplets entrained in the air stream.
Basin and Sump: Collect cooled water at the bottom of the tower for recirculation or discharge.
3. Types of Induced Draft Cooling Towers:
While the focus is on induced draft cooling towers, it's important to recognize the variations within this category. This section explores different types, such as:

Counterflow Induced Draft Cooling Towers: Air flows upward against the downward flow of water, maximizing contact time and cooling efficiency.
Crossflow Induced Draft Cooling Towers: Air flows horizontally through the tower, intersecting with the downward flow of water. This design offers easy maintenance access and uniform air distribution.
4. Operation and Performance:
Understanding how induced draft cooling towers operate is crucial for optimizing their performance. This section covers:

Air and Water Flow Dynamics: Explains how the induced draft fans create a pressure differential, drawing air through the tower.
Heat Transfer Mechanisms: Discusses the interplay between sensible and latent heat transfer, crucial for achieving effective cooling.
Performance Metrics: Introduces key performance indicators such as approach, range, cooling capacity, and efficiency.
5. Applications in Various Industries:
Induced draft cooling to

1. Plant EPC) 공사기술개발팀 2023.06.19 ( 화 ) 본 문서는 두산중공업 정보자산으로 , 승인을 받지 않은 문서의 열람 , 수정 , 배포 , 복사를 금지합니다 . This document is the informational asset of Doosan Heavy Industries & Construction. Thus, unauthorized access, revision, distribution and copying of this document are strictly prohibited. Obra ‘C’ Thermal Power Extension Project Induced Draft Cooling Tower

2. Flow Diagram of IDCT

3. Induced Draft Cooling Tower Working Principle Induced draft cooling towers are a type of cooling tower that operates on the principle of creating a negative pressure or draft within the tower, drawing air through the structure. Unlike forced draft cooling towers, induced draft towers have mechanical fans located at the tower’s exhaust or discharge section, pulling air through the tower rather than pushing it. This design contributes to several advantages, making induced draft cooling towers widely used in various industrial applications. The cooling tower pulls air through the system using a fan at the top (induced draft) which helps in the evaporation and cooling of water. Major Parts of an Induced Draft Cooling Tower 1. Fan 2. V-Bar 3. Water Distribution System 4. Drift Eliminators 5. Cold Water Basin 6. Stop log gate 7. Screen 8. Sludge Pit

4. Induced Draft Cooling Tower Riser Pipe Function: Circulation of Hot water into the cell Ensures the proper distribution of hot water across the fill material. Size: 800 NB Material Specification: IS:3589 GR.410 Valve type: Motorized Butterfly valve Valve Size: 800 NB

5. Induced Draft Cooling Tower Fan Function: Draws air through the tower. Materials: Fiberglass Type: Axial fans Fan diameter 10400 mm Blade Airfoil 35F FRP Speed 86,00 RPM 6 Blades in Fan per cell

6. Induced Draft Cooling Tower V-Bar Function: Increases surface area for water and air contact. Materials: Virgin PVC Types: PVC Splash Type Colour : Light Grey Density(As per ASTM D792): 1.6 to 1.6 gm/cc Size and Quantity: 1. Splash V-Bar: 1500 MM 3498 per Cell 2. Splash V-Bar: 2525 MM 6996 per Cell 3. Splash V-Bar: 2400 MM 3498 per Cell 4. Splash V-Bar: 1210 MM 1749 per Cell

7. Induced Draft Cooling Tower Water Distribution System Function: Distributes hot water evenly over the fill media. Components: Spray nozzles, Distribution pipes. Materials: PVC Size and Quantity: 1. 280 OD X 3155 Length, 16 per cell 2. 250 OD X 3848 Length , 16 per cell 3. 200 OD X 3293 Length, 16 per cell 4. 160 OD X 5138 Length , 16 per cell

8. Induced Draft Cooling Tower Drift Eliminators Function: Reduce water loss due to drift (tiny water droplets carried away by air). Materials: PVC Drift: 0.05% of total circulating water flow to cooling water Type: Extruded single wave drift eliminator Colour : Light Grey Nominal Thickness: 0.5 MM Spacing of each blade: 49 MM Size and Quantity: 1. Single Wave Eliminator Blade 2670 MM 366 per cell 2. Single Wave Eliminator Blade 2580 MM 1464 per cell 3. Single Wave Eliminator Blade 2545 MM 366 per cell

9. Induced Draft Cooling Tower Cold Water Basin Function: Collects cooled water at the bottom of the tower. Materials: Concrete Paint: Bituminous Black Paint

10. Induced Draft Cooling Tower Stop Log Gate Definition: A stop log gate is a barrier used to control the flow of water within the cooling tower. Function: Allows for maintenance and cleaning by isolating the tower.

11. Induced Draft Cooling Tower Screen Definition: Screens are mesh-like structures used to filter out debris from the water before it enters the forebay. Function: Protects internal components from clogging and damage.

12. Induced Draft Cooling Tower Sludge Pit Function: Collects and stores sludge and sediment that settle out of the circulating water. Location: Typically located at the lowest point of the cold-water basin. Consists of: 1. Gate Valve for circulation. 2. Sludge Pump with discharge pipe. 3. Sludge Pump lifting arrangement. 4. Sludge pit cover plate .

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