Skip to main content

Choosing an Industrial Cooling System

Choosing an Industrial Cooling System

industrial cooling in MOWhen it comes to industrial cooling in Saint Louis, American Services knows business owners do have some options.  The type of system you choose depends on the size of the area your are trying to cool, the interior building configuration, the location and other specifics that may be pertinent to your specific space.  

Probably one of the most common systems is referred to as a “split system.”  This sort of implementation is what you would typically find in a residential or small business facility.  The split system has an indoor air handling unit and a condensing unit on the outside.  This type of system has the highest energy rating, but may not work for all implementations.  The split system is also only used for cooling, so an additional heating system solution would be required.  A packaged system is similar to the split system in function, but of course all of the components are contained in one unit, as the name implies.

Another option is a chilled water system, which utilizes coils with liquid kept at a cold temperature.  This cooling of the water takes a separate cooling plant, which adds complexity and potential costs, but can work in some scenarios.  Once again, depending on the space, separate window air conditioning units can be used in certain applications.  Keep in mind that all these options require a separate heating solution 

So what is the best system to use?  The question once again depends on the space you are trying to cool.  Split systems remain a popular choice and can be supplemented with fans, individual units, smart controls and other add ons that can be adapted to the situation.  All of the aforementioned systems have their pros and cons so it is best to call in a professional who can analyze your individual space and the occupants to determine what is best.  Make sure you ask for the energy rating on the systems, warranties and any cost saving measures that can be implemented now or in the future.  That way you can start off with the right system and one that will be there for as long as you need it.

 

Radiant Cooling for Office Buildings

Radiant Cooling for Office Buildings

radiant cooling service in MOAmerican Services heating and cooling service in Saint Louis knows that most radiant cooling systems are based on aluminum panels that are extended from the ceiling through which cooled water is circulated.

In order for this system to effectively cool the office area, panels must be kept at a temperature near the dew point within the office building and the interior space must be dehumidified.  Condensation will occur in humid climates where radiant cooling systems are utilized, even when there are brief periods of exposure to the outside air within the office space. An auxiliary air conditioner may be needed to keep the humidity level low enough.

Where the climate is arid, such as in the southwest, these radiant cooling systems are advantageous particularly in the ceilings of adobe buildings where the inside air can be maintained at a steady cool temperature.

Offices built on concrete slabs are also considered some of the best candidates for radiant cooling, using the same principal as ceiling systems with chilled water systems in the floor, as well as radiant heating systems.  This option is a great choice particularly with office spaces that have existing radiant floor systems.  Humidity continues to be a concern with radiant floor cooling systems, particularly on floors that have carpet coverings instead of the preferred choice for radiant cooling systems-which is ceramic tile.  Condensation is common in areas with heavy carpet, which also limits the temperature at which the floor can be lowered to.

These systems can be very cost effective even when utilized with auxiliary cooling systems which can be used at off peak hours, reducing overall electricity demand for the business.

AC Systems – Basics of Load Calculation

AC Systems – Basics of Load Calculation

commercial air cooling system in MOAmerican Services Cooling installation and repair in Saint Louis knows that the first step in A/C System design is to select indoor and outdoor summer and winter design conditions. Today, computer programs have been designed to provide very precise load determinations but an understanding of the process is required for anyone looking at a new system.

Computation of the peak cooling load. Heat gain is composed of or influenced by the conduction heat gain through opaque portions of the building’s skin; the conduction plus solar radiation through windows and skylights; the building internal loads such as people, lights, equipment, motors, appliances, and devices; and outdoor air load from infiltration. The heat gain is equal to the cooling load required.

Ventilation rates must also be considered in A/C cooling system design. Ventilation rates have typical values and fit into the equations. For example, bedrooms have a typical ventilation rate of 30 cubic feet per minute per room compared dressing rooms of only .5 cubic feet per minute per square foot.
Central air conditioning cooling systems are typically used where several spaces with uniform loads will be served by a single unit and where precision control of the rooms are required. Cooling coils can be direct expansions or chilled water. Within this type of a system there are multiple options for condensers, cooling towers, and ground-loop systems based on the specific application for the location.

Unitary air conditioning systems are typically limited to loads less than 100 tons. These systems are packed in self-contained or split configurations. Again depending on the specifics of your application each option will have benefits and drawbacks.

Cooling Systems – Basics of Load Calculation

Cooling Systems – Basics of Load Calculation

commercial air conditioning in MOAmerican Services cooling installation near University City knows that the first step in A/C System design is to select indoor and outdoor summer and winter design conditions. Today, computer programs have been designed to provide very precise load determinations but an understanding of the process is required for anyone looking at a new system.

Computation of the peak cooling load. Heat gain is composed of or influenced by the conduction heat gain through opaque portions of the building’s skin; the conduction plus solar radiation through windows and skylights; the building internal loads such as people, lights, equipment, motors, appliances, and devices; and outdoor air load from infiltration. The heat gain is equal to the cooling load required.

Ventilation rates must also be considered in A/C cooling system design. Ventilation rates have typical values and fit into the equations. For example, bedrooms have a typical ventilation rate of 30 cubic feet per minute per room compared dressing rooms of only .5 cubic feet per minute per square foot.
Central air conditioning cooling systems are typically used where several spaces with uniform loads will be served by a single unit and where precision control of the rooms are required. Cooling coils can be direct expansions or chilled water. Within this type of a system there are multiple options for condensers, cooling towers, and ground-loop systems based on the specific application for the location.

Unitary air conditioning systems are typically limited to loads less than 100 tons. These systems are packed in self-contained or split configurations. Again depending on the specifics of your application each option will have benefits and drawbacks.

Industrial Cooling Systems

Industrial Cooling Systems

industrial cooling systems repair MOCooling systems such as industrial chillers designed for large commercial buildings must depend on either air flow, or a liquid like water as a distribution medium.

The cooled air is then circulated throughout the building through air ducts.  When water is utilized in industrial equipment for cooling, the chilled water is distributed through pipes. These are the very most common types of commercial air conditioning systems for large commercial buildings because it’s more economical.  Water has a higher heat capacity and the pipes take up far less space than the huge air ducts.  Chilled water is much more flexible to be utilized for zone control as well.

Chilled water will cool the air in the work space by being used by a distribution medium.  Industrial chillers work through air handling units or fan coils.  Usually air handlers are found in large commercial buildings, hospitals, and other oversized spaces.  In smaller commercial spaces such as small hotels, fan coil units are usually found. These units are usually controlled by thermostats.

In water chilling systems cooling towers and chillers comprise the commercial cooling system. Chilled water distribution systems utilize the same piping system as hot water systems use.  These systems could also supply heat.

There are 2 pipe and 4 pipe systems in chilled water air handlers and fan coils used to cool.  In a 2 pipe system there is only one water loop and one return pipe for each handler.  The commercial building can be in what’s called “switch over dates” when the chiller is shut down and the industrial boiler is started up.  The disadvantage to the 2 pipe system is that if the weather suddenly becomes unseasonable, it is not very likely that the cooling system can be suddenly switched back on.

A 4 pipe system on the other hand, uses 2 different water loops, one for heat and one for cooling.  This allows for simultaneous heating and cooling in separate parts of the building.  Consequently, a switch over is not necessary.  Of course 4 pipe systems are a bit more costly due to more expensive coils, controls and the extra water loop.

To learn more about industrial cooling equipment near Hazelwood contact us today at American Services heating and cooling repair in St. Louis.

Radiant Cooling

Radiant Cooling

cooling installation in ILAmerican Services heating and cooling installation in Jefferson County is committed to keeping customers updated on the latest in savings on commercial heating and cooling.

Is radiant cooling an appropriate technology to use in commercial buildings in the Northwest?

Researchers say the bottom line is that yes, radiant cooling can be a very cost effective means of cooling commercial buildings in most climates. Evidence suggests that applied properly radiant cooling could save significant energy in the commercial building sector, and may even increase occupants comfort, improve indoor air quality, and increased productivity.

A radiant cooling system works on the same principle as radiant heating, in fact in many cases the same network of piping as the heating system can be utilized. Basically the idea is that thermal comfort is determined not only by the temperature of the air around you, but a combination of the ambient air and heat being radiated to or from objects nearby.

A fairly large surface which is exposed to the building’s occupants must be cooler than the ambient air to provide radiant cooling. Occupants then radiate heat to the object causing a sense of cooling.  In practice, cooling is accomplished by chilled water circulating in an intricate network of pipes in panels or building components. Technically infrastructure can be in the floor, walls, or ceiling.

Radiant floors are popular for heating but have not been as successful for cooling because of condensation and other technical problems encountered. Walls are often not strategically located to give even heating to all occupants. Therefore the most popular choice has been ceilings thus far.The most common approach has been to use ceiling panels which makes the system modular, relatively easy to design, modify and repair.