What Is Precision Split Air Conditioner And Why Is It Have To?
What is precision split air conditioner and why is it necessary?
Compared to yesterday’s monolithic telephone system, at the moment’s worldwide communications network is a much more complex and constantly evolving cluster of interconnected systems. And with continually more mission-critical processes reliant on transmission accuracy and 100 percent uptime, the desires for reliability and operation have never been greater. Precision Air conditioner is one cornerstone of a effectively-designed support system for this network.
Communications network cooling needs differ from typical commercial or “luxury” needs, in the following significant ways.
Commercial cooling systems may be required to work only during summer months and during normal working hours. Communications website, however, generate heat 24 hours per day, 365 days per year, and so the cooling equipment have to be able to operate reliably when outdoor ambients are as high as 120degF or as cheap as -20deg. Because of this constant cooling requirement, the selection of reliable and electricity efficient components are vital.
Unlike frequent commercial air conditioning systems, these precision air conditioner units are designed to operate continually, require a small amount of maintenance, and offer precise control of heat and humidity. Standard air conditioners quickly lose efficiency and break under continual performance.
Electronic Load
While entirely cooling load is determined by the apartment house, solar load, area pressurization or ventilation air, electronic equipment and people, the primary load in a communications site is normally the equipment. The primary loads in commercial sites are normally people and ventilation air. In the procedure of cooling, most air conditioners cool the air (sensible cooling) and eliminate moisture (latent cooling). Since electronic equipment does not release or absorb moisture, the air conditioning selected for a communications site must primarily cool the air, not eliminate moisture. The split air conditioner need normally be selected with a “sensible heat ratio” of no lower than 78 percent.
A system more typical of a commercial application, with a sensible heat ratio of only 65 percent, could consume as much as 20 percent more energy to cool the same site, and could ease humidity levels in the area to unacceptable levels.
Precision ac split is designed from the ground up to protect equipment, not people. “Luxury” air conditioning systems are designed for the relaxation of people, and simply cannot give the kind of environment required by high-performance telecom equipment.
There are fundamental differences between standard and precision air conditioning…reasons why “people coolers” won’t protect equipment. People are far more tolerant of heat and humidity swings, whereas equipment requires precise levels of heat and humidity maintained around the clock. This means weighty-job systems and precision controls; people coolers don’t have either the strength or sensitivity for the duty.
Temperature Control
The high density temperature load in a telecommunications area is beyond the capability of frequent split air conditioner systems. Equipment is high-quality maintained in a stable environment of 72degF /-2degF (22.2degC /-1degC). As telecom equipment generates large quantities of temperature in small areas, six to ten times the temperature density of normal office room, the air conditioner system need have more than just enough cooling capacity.
It should have the precision to react quickly to a drastic change in heat load and prevent wide heat fluctuations, which is something a large building system cannot do.
Humidity Manage
Telecommunications equipment necessary be protected from both internal condensation and static electricity discharges. Maintaining the exact humidity level in the computer room is just as essential as maintaining proper heat.
Too high a humidity could cause condensation within the telecom equipment and the potential for hardware damage. If humidity is too discount, static energy could disrupt operation or even shut down the telecom system. An ordinary building system cannot normally control the environment within these boundaries.
Air Volume
Telecommunications equipment requires greater air volumes than general air conditioning can give. Typical comfort systems are designed to supply in the midst of 300 and 400 CFM (cubic feet per minute) per ton of cooling. Telecom systems require between 500 and 600 CFM per ton. The high-density temperature load in a relatively small room requires more changes of air than a less dense “comfort” application. While a normal office room requires only two air changes per hour, a telecom room requires up to 30 changes per hour. Without proper air volume, hot spots and heat fluctuations could make better within the area. Also, greater air volumes provide the higher sensible temperature ratios required by telecom equipment.
Air Filtration
Filtration of both space pressurization and recirculation air is critical in a communications site, and the air filter must have an “ASHRAE 52-76″ Standard Efficiency of no lower than 25 percent. This efficiency is much higher than normally provided in a commercial system.
If you need further information about air conditioners and other Electronics product please contact us at Tenarelektronik
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