How Do Solenoid Valves Work in Cooling Towers?

It is very important for cooling tower systems to have solenoid valves that work well and keep everyone safe. Even though they are usually small, these electrically controlled valves do important work to keep cooling towers running easily by controlling the flow of water. Knowing how solenoid valves work and why they are so important can help facility managers better control water, cut down on energy costs, and make sure the system is always reliable.

 

This article covers what kinds of solenoid valves are used in cooling towers, how they work, and why they are important for both commercial and industrial HVAC systems. Read on to learn more!

 

What Is A Solenoid Valve?

 

An electric current can be used to control the flow of water or another stream through a solenoid valve and is made up from:

 

• A coil (the trigger)
• An arrow or pump
• A spring
• A valve body with holes for letting air in and out

 

A magnetic field is made when electricity flows through the solenoid coil. This field lifts the plunger, which opens the valve. The spring pulls the plunger back down, closing the valve, when the power is turned off. This system makes it possible to precisely and automatically control how the water moves inside the cooling tower.

 

What solenoid valves do and how they work in cooling tower systems

 

There are different ways that solenoid valves are used in cooling towers, but their main job is still the same: to automatically control the flow of water with speed, accuracy, and dependability. Here are some of the most important uses.

 

1. Controlling Makeup Water

 

Controlling the makeup water—the new water added to make up for water lost through evaporation, drift, and blowdown—is one of the most important jobs of solenoid valves in cooling towers.

 

The water level in the bowl is found by a float switch or a conductivity probe. When the level falls below a certain point:

 

• The monitor tells the solenoid valve what to do.
• The valve opens on its own.
• The basin gets filled with water until the right amount is reached again.

 

After that, the sensor shuts the opening.

 

This automatically checks the water level, stops pump cavitation, and keeps the tower going at its best.

 

2. Control of Blowdown and Bleed-Off

 

To keep minerals from building up, cooling towers have to release (or “bleed off”) a certain amount of concentrated water. Valves with solenoids:

 

• Open to let mineral-rich water out
• Once the target conductivity levels are met, close the valve.

 

This helps keep the water clean and keeps scale, corrosion, and bacterial growth from growing on the cooling tower.

 

3. Chemical Feed Systems

 

Solenoid valves make sure that chemicals are supplied in exact amounts by opening and closing on their own when controller signals tell them to.

 

4. Pump and Safety Systems

 

Safety interlocks can have solenoid valves built in that:

 

• If you need to, turn off the water flow.
• Keep pumps from running out of oil.
• Take care of preventing overflow
• Keep parts of the tower separate while they are being fixed.

 

Having this automatic security helps the main parts last longer.

 

The Uses Of Different Solenoid Valves In Cooling towers

 

1. Valves that are normally closed (NC)

 

These stay closed until they are turned on. Great for chemical feed and make-up water.

 

2. Valves that do not close (NO)

 

These stay open as long as the power is on. This is helpful for fail-safe uses.

 

3. Valves That Act Directly

 

Best for systems with low pressure.

 

4. Valves Operated by a Pilot

 

When bigger pressures and flow rates are needed, this is what is used.

 

Why Solenoid Valves Are Important

 

• These things make solenoid valves improve the performance of cooling towers
• They offer exact control of the water
• They can work with or from an automated system
• Fewer workers are needed
• Better water use efficiency
• Chemical balance that stays the same
• Increased dependability and safety

 

Without them, cooling towers would have to be tended to by hand all the time, which would add to the costs, raise the risk of downtime, and make the system less effective.

 

Universal Tower Parts Sells Solenoid Valves

 

Universal Tower Parts sells many important cooling tower parts, such as solenoid valves, float switches, chemical feed parts, makeup water systems, and more. Our experts can help you find exactly what you need, whether you need to fix an old system or make it more efficient.

 

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