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Cooling Your Offices And Homes With A Central Air Conditioning System
As temperatures start to climb outdoors, it often becomes very uncomfortable indoors for working, relaxing and sleeping. At these times there is generally a surge in interest in finding ways to cool down homes, apartments and offices. Often, this is when people decide that central air conditioning would be an attractive choice, because it offers a convenient way to control the indoor environment, as opposed to single room air conditioners that might not be the most efficient way to go.
A centralized air conditioning system does its job by utilizing a "split system," which is able to condense the air as well as compress it. Additionally, these systems use an evaporator that is connected to the mechanism that handles it, such as a forced-air furnace. The entire unit is then put together as one complete system and installed exteriorly, usually on the roof of a commercial building or in a mechanical unit outside of a house.
As the central air conditioning begins to work, the cool air is sent throughout the building through a series of ducts that allow airflow into different rooms. The temperature in rooms of a house or different parts of a building is achieved by setting the system controls that come with the unit.
However, there is also the possibility that some centralized air conditioning systems do not come with such controls. In these instances, the controls must be purchased at an additional cost and should be installed at the same time as the complete unit. It is important to clarify this upfront with company that is selling and installing the unit so that there are no surprises during the installation process.
One of the reasons why most homeowners prefer centralized, air conditioning equipment is that these systems are able to keep the noise associated with running the air conditioning outside. Even the newer room air conditioners can be rather noisy, especially when running at night in bedrooms.
Such systems position the equipment that is responsible for the majority of the noise on the outside of the house. This allows the interior of the home to stay nice and quite even though the air conditioning unit might be working hard to keep things cool.
Central air conditioning tends to be a fairly complex system and the equipment is typically installed when a building is under construction. These heating and air conditioning systems supply the heating, cooling, air filters or air purifiers, and ventilation as needed to keep the environment of the home or office building comfortable and healthy. A centralized system utilizes supply and return ducts that are placed throughout the structure in order to properly circulate air.
If you are considering installing a new central air conditioner or simply need to replace an existing one, then make sure that the contractors who bid on the job perform a detailed "cooling load calculation" so that the proper system for your home will be installed. It is best not to use a simple "rule of thumb," which tends to result in oversized equipment.
At the same time, they should not simply replace the old system with a new unit of the same size. The reason for this is because the existing system may have been the wrong size to begin with, or the home may have had added insulation or more efficient windows put in since the original system was installed.
All of the air conditioning manufacturers must have the equipment they produce rated for efficiency, according to the law. The rating for a central air conditioning unit is called the Seasonal energy efficiency Rating, or SEER. Heat pumps carry an HSPF, or Heating Seasonal Performance Factor, rating. The higher the number of the SEER/HSPF rating, the more efficiently the equipment uses electricity.
By: Michael Selvon
Article Directory: http://www.articledashboard.com
Get your FREE ventilation gift and the best information on the central air conditioning at Mike Selvon’s portal, and leave a comment at our air conditioning systems blog.
0 comments Thursday 08 Jan 2009 | admin | Cooling
Benefits Of A Server Room Portable Air Conditioner
Server rooms are essentially rooms that house computer servers and in the informational technology sector, the term generally applies to smaller arrangements of servers, while larger groups of servers are housed in data centers. Server rooms are at the heart of IT operations, and in order to prevent hardware malfunction and system failure, proper operation and setup is critical.
Unfortunately, in an enclosed space of a server room, the generated heat from equipment can quickly increase the ambient temperature beyond equipment specifications. The life and reliability of machines is compromised, and other disastrous results can follow, including system crashes, random reboots, and overall poor performance. With that in mind, it’s important to keep your server room’s temperature within the recommended ranges associated with your hardware. Keep in mind that the heat dissipation from your servers will require adequate ventilation and cooling, so this is an important step in protecting your equipment and ensuring maximum productivity.
Environmental Conditions of Server Rooms
Computer equipment ages quicker when hot, and for individual machines such as home or office desktops, the internal fans and cooling mechanisms are often sufficient at keeping temperatures within safe operating limits. However, in data centers and server rooms, this may not be the case. Modern server equipment generates enormous amounts of heat, and today’s machines run faster and hotter. Moreover, server rooms may even be prone to "hot spots" which can build up behind equipment racks or near larger machines, and if not addressed, this can cause premature failures.
Increased humidity levels can also affect your server room because high humidity levels can damage equipment by causing corrosion and rust. Thus, preventing humidity changes and variations is imperative in order to avoid environmental conditions where there may be excess condensation, so the optimal humidity levels for a server room or data center should range from 40 to 55 percent. Lastly, another problem that can plague server rooms is insufficient airflow often due to the server room’s design. As such, all of these environmental temperature problems and fluctuations usually call for the installation of separate cooling systems.
Why Buy a Server Room Portable Air Conditioner?
When it comes to computer server rooms, keeping temperatures and the overall environment controlled must occur twenty four hours a day due to constant heat generation. Relying on central air conditioning systems is not possible due to the fact that most systems are prone to shutoffs during weekends. Moreover, central air conditioners are complex appliances that have been known to suddenly fail. Window air conditioners aren’t an option either, as most server rooms are usually not near windows. Instead, they are often located in interior rooms which presents a cooling dilemma for many customers.
Thankfully, portable air conditioners are ideal for keeping server rooms at the right temperatures because they have the ability to cool office spaces and computer rooms that house heat-generating electronics. This prevents computer networks, communications, and office equipment from shutting down when temperatures rise. As self-contained units, one of the biggest benefits of a portable AC is the fact that permanent installation is not necessary. In fact, almost all models include rolling casters that allow you to move the unit from one area to the next, making cooling server room hot spots especially easy.
Nonetheless, server rooms can’t be cooled by just any type of portable AC. An ideal server room portable air conditioner must have the following features:
1. Automatic Restart Function
2. Ventilation System to Displace Hot Air
3. Condensation Tank
Automatic Restart Function
An automatic restart function is imperative in a server room portable air conditioner because it will help keep the unit running continuously, even in the case of power failure. In other words, you can still keep your equipment cool even at night or on the weekends when central cooling is not available, and in the event of a power outage, the air conditioner will resume operation once the power is restored without you having to reset the controls manually. We recommend models such as the Soleus LX-140.
Ventilation System to Displace Hot Air
Server rooms must have a means to expel heat from the server room. As mentioned above, many server rooms are located within the interior of a building, and furthermore, window air conditioners can’t be used because of the security risk presented by an open window. The ideal type of portable air conditioner for a server room uses a vent hose to push air out through a drop ceiling or wall.
Condensation Tank
A server room’s atmosphere requires low humidity levels because too much moisture will cause damage to machinery. However, because portable air conditioners act as dehumidifiers and whisk moisture away from the air, this condensate is collected into a condensation tank or bucket.
Recommended Server Room Portable AC: NewAir ACP-1400E (www.air-n-water.com/product/ACP-1400E.htm)
Jeanie Wong is a marketing writer and product editor with extensive knowledge of appliances such as portable air conditioners.
0 comments Thursday 18 Dec 2008 | admin | Cooling
Air Conditioning For Everyone
The term air conditioning refers to the cooling and dehumidification of indoor air for thermal comfort. In a broader sense, the term can refer to any form of cooling, heating, ventilation or disinfection that modifies the condition of air.[1] An air conditioner (AC or A/C in North American English, aircon in British and Australian English) is an appliance, system, or mechanism designed to stabilise the air temperature and humidity within an area (used for cooling as well as heating depending on the air properties at a given time), typically using a refrigeration cycle but sometimes using evaporation, most commonly for comfort cooling in buildings and motor vehicles.
The concept of air conditioning is known to have been applied in Ancient Rome, where aqueduct water was circulated through the walls of certain houses to cool them. Similar techniques in medieval Persia involved the use of cisterns and wind towers to cool buildings during the hot season. Modern air conditioning emerged from advances in chemistry during the 19th century, and the first large-scale electrical air conditioning was invented and used in 1902 by Willis Haviland Carrier.
A poorly maintained air-conditioning system can occasionally promote the growth and spread of microorganisms, such as Legionella pneumophila, the infectious agent responsible for Legionnaires’ disease, or thermophilic actinomycetes,[10] but as long as the air conditioner is kept clean these health hazards can be avoided. Conversely, air conditioning, including filtration, humidification, cooling, disinfection, etc., can be used to provide a clean, safe, hypoallergenic atmosphere in hospital operating rooms and other environments where an appropriate atmosphere is critical to patient safety and well-being. Air conditioning can have a positive effect on sufferers of allergies and asthma.[11]
In serious heat waves, air conditioning can save the lives of the elderly. Some local authorities even set up public cooling centers for the benefit of those without air conditioning at home.
Poorly operating air conditioning systems can generate sound levels that contribute to hearing loss, if exposures are endured over a long term. These levels are similar to the exposure of living near a busy highway or airport for a considerable length of time. Properly functioning air conditioners are much quieter.
A portable air conditioner or portable A/C is an air conditioner on wheels that can be easily transported inside a home or office. They are currently available with capacities of about 6,000 to 60,000 BTU/h (1,800 to 18,000 watts output) and with and without electric resistance heaters. Portable true air conditioners come in two forms, split and hose. Evaporative coolers, sometimes called conditioners, are also portable.
Air Conditioning can be used for home use or industrial use for more information vist Pulse Services Ltd.
0 comments Thursday 27 Nov 2008 | admin | Cooling