Quick Answer: Which Of The Cooling Tower Has Highest Efficiency?

What is the pH of cooling tower water?

7.0The pH measures the balance of acid and base in a substance.

The more alkaline — baser — a material is, the higher its pH.

The neutral pH of cooling tower water is 7.0.

For every 1.0 increase in pH, the alkalinity increases by ten times, according to the Environmental Defense Fund (EDF)..

What is the working principle of cooling tower?

Cooling tower systems work by using water to extract waste heat from a system and ejecting it into the atmosphere primarily through evaporation. The three key components of a cooling system are the cooling tower, recirculating pump, and heat exchanger. Water first passes through a heat exchanger where it absorbs heat.

What is the lowest temperature a cooling tower can produce?

For exam- ple, at 35°F (1.6°C) dry bulb, above commonly assumed freezing conditions, the wet-bulb temperature often can be less than 32°F (0°C) wet bulb—and the water flowing over a cooling tower can freeze without proper operation.

How can we increase the efficiency of a cooling tower?

How to Improve Water Efficiency on Your Cooling TowerPiping Change. Simple repairs like a change to the water piping can help you mange your energy consumption. … Focus on Recycling. … Periodically Inspect all Equipment. … Increase Cooling Cycles.

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 is blowdown loss in cooling tower?

Cooling tower bleed-off/blowdown is the flushing of a portion of high mineral concentration cooling tower system water down the drain, while simultaneously replacing it with fresh water. This process dilutes the system water mineral concentrations that steadily increase due to water evaporation.

What are the types of cooling towers?

The types of cooling towers based on the air flow generation are Natural draft, Mechanical draft, Cross-flow and Counter-flow 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.More items…•

Which one is provided to reduce drift losses in cooling tower?

Drift can be reduced by: Providing fan speed control. Protecting the tower from excessive ambient winds.

What is a purpose 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 parameters affect to performance of cooling tower?

Several parameters as Cooling range, Wet bulb temperature, Mass flow rate of water, Tower height, Air velocity through tower and many other things that affect the performance of cooling tower. For a good designer all this parameter would want to mind for proper designing and functioning of cooling tower.

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.

What is the efficiency of cooling tower?

In practice, the cooling tower efficiency will be in between 70 to 75%.

What is TR capacity in cooling towers?

Chiller Refrigeration Tons Some commercial and industrial refrigeration systems are rated in Tons of Refrigeration (TR, tons). A ton is the amount of heat removed by an air conditioning system that would melt 1 ton (2000 lbs.) of ice in 24 hours. The heat required to melt 1 lb of ice at 32 oF to water is 144 Btu.

Why are cooling towers so tall?

Because they are “natural draft” towers. … A natural draft tower is very large (tall) and shaped like a nozzle. This allows for cool, dense air from the environment to naturally flow up through the bottom of the tower and out through the top. That flow of air is what drives the evaporation of the fluid being cooled.

How do you calculate air flow in a cooling tower?

The formula is total heat removed (11.2) times pounds per minute of air (6.95) times 60 minutes per hour. 11.2 X 6.95 X 60 = 4, 670.4 BTU/Hr. Therefore, a tower with a 100 CFM motor at these conditions would be removing 4,670.4 BTU/Hr.