Table of Contents
How are cooling towers size?
Cooling towers vary in size from small roof-top units to very large hyperboloid structures (as in the adjacent image) that can be up to 200 metres (660 ft) tall and 100 metres (330 ft) in diameter, or rectangular structures that can be over 40 metres (130 ft) tall and 80 metres (260 ft) long.
How do you measure the blade angle of a cooling tower fan?
Position one blade so that it is in a horizontal position. Place protractor head across concave face of blade at tip and measure pitch angle from 90°. Position successive blades at this same spot and check each pitch angle. See figures on reverse side.
What is the angle of cooling tower fan?
It was found that the cooling tower can operate in all approaches (5°C, 6°C, 7°C and 8°C), the cooling range of 5°C, wet bulb temperature of 26°C, and water flow rate of 3.9 m3/h by the adjustment of blade angle at 67°. Cooling Tower Institute. 1982.
What is fan deck in cooling tower?
A cooling tower fan deck is the horizontal surface found at the top of the tower. The fan deck is a great place to soak up the sun or perhaps take an afternoon stroll. It provides access to the various mechanical components of your cooling tower depending on your configuration.
Why are cooling towers so big?
The top of cooling towers widens because this is the point where hot air from inside the tower diffuses and mixes with the atmospheric air. Therefore, we want to maximize the area through which this diffusion takes place so that more hot vapor is quickly mixed and the entire process of cooling is done more efficiently.
How do you calculate the efficiency of a cooling tower?
Cooling Tower Efficiency Calculations
- Approach = Cold Water Temperature – Wet Bulb Temperature.
- Cooling Tower Efficiency =
- (Hot Water Temperature – Cold water Temperature) x 100/
- (Hot Water Temperature – Wet bulb temperature)
How is blade angle measured?
Blade angle, usually measured in degrees, is the angle between the chord of the blade and the plane of rotation (Fig. 17-39) and is measured at a specific point along the length of the blade. The pitch in inches is the distance which the propeller would screw through the air in one revolution if there were no slippage.
What is the angle of fan blades?
Blade pitch is the angle, measured in degrees, between a 180-degree horizontal plane and a ceiling fan’s blade tilt. The angle of the blade makes a difference in how much air a fan can circulate throughout a room. The optimal blade pitch for a ceiling fan is 12-15 degrees.
What is torque tube in cooling tower?
Torque Tube Type And Channel Base Frame Can Be Used For Both Cross Flow And Counter Flow Cooling Towers. Normally The Mechanical Supports/Base Frames Are Made Out Of Hot Dip Galvanized Steel. Stainless Steel Of 304 Or 316 Grade Are Manufactured Upon Request.