Westland Heating & Air Conditioning Blog: Posts Tagged ‘Cooling Towers’

This is How Cooling Towers Work

Tuesday, February 25th, 2014

You often see cooling towers in commercial and industrial sites, helping to keep components cool and allow the HVAC system to do its job with less stress and strain. Here in Avon, cooling towers are a common site for many commercial HVAC units, and installing one could be a very wise move towards keeping your costs down. But what do cooling towers do for you that you wouldn’t fin in an air conditioning system without one? Here’s a brief rundown of how cooling towers work.

In basic terms, they facilitate a heat exchange with the condenser in the HVAC systems, usually using water to transfer away the excess heat.  It starts with a stream of cold water, which pulls excess heat form the convert and helps cool it down. The now-warm water moves through the cool, cooled by a second flow of cool water which evaporates and helps cool off the hot water. Once the water has been restored to a cooler temperature, it can then return to the compressor to continue cool it as well.

Cooling tower come in multiple types, including crossflow cooling towers (which blow the air horizontally while the water flows vertically) and counterflow cooling towers (which blow the air vertically and use pressurized sprays to hit the air with the water). Both types periodically need to be refilled with water, since the process leads to a lot of evaporation and can dry out the unit if you’re not careful. On the other hand, it helps the existing HVAC system handle the load much more effectively, reducing wear and tear and helping lower your overall energy costs in the bargain.

If you know how cooling towers work, you know that they need care and maintenance just like the rest of the HVAC system. In Avon,  We have the experience and know-how to deal with any problems you might experience and we stand by our work with your complete satisfaction in mind. For all of your cooling tower and commercial HVAC system service needs in Avon, look to the experts at Westland Heating and Air Conditioning. Give us a call today to make an appointment. You’ll be glad you did!

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North Ridgeville AC Guide: Understanding the Working of Cooling Towers

Monday, September 10th, 2012

The primary function of cooling towers is the removal of heat from manufacturing and production processes. A cooling tower can work on simple principles of air conditioning or it could involve more complex processes such as those used in chemical plants, oil refineries or power plants in North Ridgeville .

The size of a cooling tower is determined by the size of the process for which it is being used. While some cooling towers can be found in the form of small chimney-like structures, others can be the size of an entire office building. Regardless of their size, however, these structures are used to cool water and return it to an HVAC or related system for further use which saves a lot of energy as well as time and money.

During the removal of heat, cooling towers either use air or the process of evaporation. When heat is removed using evaporation, the process of wet-bulb air temperature is used to measure the temperature of the air.  On the other hand, when the temperature is taken by exposing water to cooler air, it is known as dry-bulb. Most of these cooling towers operate in pairs so if one system fails, the other one can take over.

Cooling Using Air

When air is used to cool the water in cooling towers, the water is directed towards the top of the tower. It is then made to follow a path that leads it to flow down in the form of droplets. When this happens, cool air is blown upwards against the water droplets. As the air passes these droplets, the temperature of the water drops and it is then returned to the bottom to be used further in the production process.

Cooling Using Evaporation

When water is heated, it turns into vapor, rises up, cools and comes back down again as a liquid. This process is based on the natural phenomena of evaporation and condensation. The contrast of temperature between the water and the air is what determines the efficacy of this process.

The larger the temperature gradient, the more efficient the process of cooling is. This is why humid regions are not great for this kind of cooling. While these processes can be either open circuit or closed circuit, many systems use both these types of circuits to maximize effectiveness. For more information about cooling towers or commercial HVAC in North Ridgeville, give Westland Heating and Air Conditioning a call today!

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