Crossflow towers will serve better for maintenance access, variable flow, and cold weather operation . Counterflow towers may serve better in tight spaces under 750 tons, or in spaces where lower operating weight is required.
What is a crossflow cooling tower?
Crossflow cooling towers distribute the hot water perpendicularly to the air flow . Water flows from the top of the cooling tower through the hot water gravity distribution basin and into the fill while the cooling tower fan draws air horizontally across the fill.
Which tower gets higher airflow counterflow or crossflow?
| Criteria Counter Flow Cooling Tower | Performance The counterflow cooling tower delivers higher performance than crossflow cooling tower. A cooling tower can even be designed with an approach of below 2 Deg C economically. | Space Requirement Space requirement in counter flow cooling tower are low. |
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Which type of cooling tower is more efficient?
The film type of fill is the more efficient and provides same heat transfer in a smaller volume than the splash fill. Cold water basin: The cold water basin, located at or near the bottom of the tower, receives the cooled water that flows down through the tower and fill.
How do I choose a cooling tower?
First the cooling tower NOMINAL load must be determined: Nominal Load = GPM x 500 x ° Range , = GPM x ° Range; therefore, 15,000 BTU/Hr 30. Nominal Load = 300 gpm x 20° Range = 200 cooling tons required.
What is the application of cooling tower?
Cooling towers are primarily used for heating, ventilation, and air conditioning (HVAC) and industrial purposes . Cooling towers provide a cost-effective and energy efficient operation of systems in need of cooling. More than 1,500 industrial facilities use large quantities of water to cool their plants 2 .
What are the different types of cooling towers?
- Natural Draft cooling towers use the design and shape of the tower itself to move up the air naturally using fans. ...
- Mechanical Draft towers tend to use a fan to force the air.
Why are cooling towers Hyperbolic?
Hyperboloid (sometimes incorrectly known as hyperbolic) cooling towers have become the design standard for all natural-draft cooling towers because of their structural strength and minimum usage of material . The hyperboloid shape also aids in accelerating the upward convective air flow, improving cooling efficiency.
What are cooling tower drift eliminators?
Drift eliminators are designed to capture large water droplets caught in the cooling tower air stream . The eliminators prevent the water droplets and mist from escaping the cooling tower.
What is mechanical draft cooling tower?
Mechanicaldraft cooling towers are the most widely used in buildings and rely on power-driven fans to draw or force the air through the tower . They are normally located outside the building. The two most common types of mechanical draft towers to the HVAC industry are induced draft and forced draft.
What are the parameters affect to performance of cooling tower?
Cooling tower performance depends on four factors (1) Range; (2) Heat load; (3) Ambient wet-bulb temperature or relative humidity and (4) Approach . Range is the temperature difference between the hot water inlet and cold water outlet at the tower.
How can we increase the efficiency of a cooling tower?
- Save energy.
- Reduce the amount of water being consumed.
- Decrease the amount of chemicals required for water treatment.
- Extend the equipment service life.
- Reduce operating costs, overall.
In which season cooling tower works best?
The efficiency of the counter flow induced draft type cooling tower is higher in winter season lower in rainy season. The efficiency of cooling tower in winter season, summer season and winter season are 76.92%, 68.75% and 57.14%.
What is cooling tower capacity?
The cooling tower's capacity is the product of the mass flow rate of water, specific heat, and temperature difference . This can also be expressed as heat rejected in kCal/hr (Btu/h). Evaporation loss. This is the amount of water that is evaporated during the cooling process.
What is the difference between crossflow and counterflow cooling towers?
In a crossflow tower, air travels horizontally across the direction of the falling water whereas in a counterflow tower air travels in the opposite direction (counter) to the direction of the falling water . ... This is because of the air inlets on each style of tower.
What is inside a cooling tower?
Inside the towers the warm water is poured over what's known as the cooling tower pack, a series of stacks of corrugated plastic that sit roughly 30 metres up the tower. The heat and the tower's height create a natural draught.
