A cooling tower is used to cool water and is a huge heat exchanger, expelling building heat into the atmosphere and returning colder water to the chiller . A cooling tower receives warm water from a chiller.
What is the function of a cooling tower?
A cooling tower is designed to remove heat from a building or facility by spraying water down through the tower to exchange heat into the inside of the building . Air comes in from the sides of the tower and passes through the falling water.
What is the purpose of cooling tower and how it works?
Cooling towers are essentially large boxes designed to maximize evaporation of water . To do this, they contain material, typically PVC plastic sheets, that create large surface areas for water evaporation to occur. This material is what fills the inside of the cooling tower and is called “Cooling Tower Fill”.
What is the function of the cooling tower in a chilled water system?
A cooling tower is a large heat exchanger unit which provides cooling water to remove heat from a coolant (most often water) that has been used to cool machinery, process fluids, or buildings. When the cooling water meets with air, a small portion evaporates, lowering its temperature.
What are the 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.
Which type of cooling tower is more efficient?
Counterflow (induced draft) systems are considered the most efficient of the two. Crossflow (forced draft) towers distribute hot water perpendicularly to the air flow, while counterflow towers distribute hot water directly into the air flow.
What causes a cooling tower to overflow?
Overflow: If the water level in the basin gets too high, it will flow through here and out to a drain . Drain: Water will be drained from the cooling tower for maintenance purposes but also periodically during normal operation when the level of impurities in the water gets too high.
What is the process of cooling tower?
In a short summary, a cooling tower cools down water that gets over heated by industrial equipment and processes . ... When the air and water come together, a small volume of water evaporates, creating an action of cooling. The colder water gets pumped back to the process/equipment that absorbs heat or the condenser.
How does a cooling towel work?
Towels work through evaporative cooling . Just like sweating, it directs the heat away from the body. The towel is immersed in cold water and then pressed to leave it wet, but not dripping. ... The heat is then lost through evaporation, providing a cooling effect.
What are three types of cooling towers?
There are three main types of cooling towers that are defined by how water or air pass through them. These types include crossflow, counterflow, and hyperbolic . There are also two varieties classified solely on airflow, known as induced draft and passive draft cooling towers.
What is difference between cooling tower and chiller?
Mechanical draft cooling towers rely on fans to pull cool air into the system to remove the heat from water. ... Chillers utilize compressors, evaporator heat exchangers and condenser heat exchangers. The condenser heat exchanger is the major component that rejects heat from the chillers to air.
Which working fluid is used in cooling tower?
Heat transfer methods
wet cooling towers or evaporative cooling towers operate on the principle of evaporative cooling. The working coolant (usually water) is the evaporated fluid, and is exposed to the elements.
How many types of cooling systems are there?
There are two types of cooling systems: (i) Air cooling system and (ii) Water-cooling system. In this type of cooling system, the heat, which is conducted to the outer parts of the engine, is radiated and conducted away by the stream of air, which is obtained from the atmosphere.
What is the pH of cooling tower water?
A pH between 6.5 and 7.5 is generally considered the ideal range for reducing scale formation, though some non-acid treatments for scale prevention can increase the cooling tower pH range up to 8.5 . The pH also depends on the cycles of concentration (COC).
What is TDS cooling tower?
Cooling towers are used within some businesses for process water cooling or as part of an air-conditioning system. ... ‘Bleed’, ‘blow-down’ or ‘dump’ cycles – as water is evaporated, concentrations of total dissolved solids (TDS) increase which is detrimental to the efficient operation of the unit.
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.
