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What is precision air conditioning and why is it have to?

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 requirements for reliability and operation have never been greater. Precision AC Split is one cornerstone of a not wastefully-designed support system for this network.

Communications network cooling needs differ from typical commercial or “comfort” needs, in the following significant ways.

Commercial cooling systems may be required to work only during heats months and during normal operation hours. Communications sites, however, generate temperature 24 hours per day, 365 days per year, and so the cooling equipment need be able to work reliably when outdoor ambients are as high as 120degF or as low as -20deg. Because of this constant cooling requirement, the choice of reliable and energy effective components are essential.

Unlike general commercial split air conditioner systems, these precision ac split units are designed to operate continually, require a small number of maintenance, and offer precise control of heat and humidity. Standard air conditioners quickly lose efficiency and break under continual performance.
Electronic Load

While all cooling load is determined by the building construction, 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 website are normally people and ventilation air. In the method of cooling, generally air conditioners cool the air (sensible cooling) and eliminate moisture (latent cooling). Since electronic equipment does not release or absorb moisture, the ac split selected for a communications site necessary primarily cool the air, not remove moisture. The air conditioning necessary normally be selected with a “sensible temperature ratio” of no lower than 78 percent.

A system more typical of a commercial application, with a sensible temperature ratio of only 65 percent, could consume as much as 20 percent more energy to cool the same site, and could no difficulty humidity levels in the space to unacceptable levels.
Precision air conditioning is designed from the ground up to protect equipment, not people. “Luxury” split air conditioner systems are designed for the relaxation of people, and simply cannot supply the warm of environment required by high-performance telecom equipment.

There are fundamental differences amongst standard and precision air conditioner…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 heavy-piece of work systems and precision controls; people coolers don’t have either the strength or sensitivity for the work.

Temperature Manage

The high density heat load in a telecommunications area is beyond the capability of general air conditioning systems. Equipment is good maintained in a stable environment of 72degF /-2degF (22.2degC /-1degC). As telecom equipment generates large quantities of heat in small areas, six to ten times the temperature density of normal office area, the air conditioning system have to have more than just enough cooling capability.

It must have the precision to react quickly to a drastic change in heat load and prevent wide temperature fluctuations, which is something a large condominium system cannot do.
Humidity Manage
Telecommunications equipment should be protected from both internal condensation and static power discharges. Maintaining the right humidity level in the computer space is just as important 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 electrical could disrupt performance or even shut down the telecom system. An usual apartment system cannot normally control the environment within these boundaries.
Air Volume

Telecommunications equipment requires greater air volumes than usual air conditioner can supply. Typical relaxation systems are designed to offer in the midst of 300 and 400 CFM (cubic feet per minute) per ton of cooling. Telecom systems require in the midst of 500 and 600 CFM per ton. The high-density temperature load in a relatively small space requires more changes of air than a less dense “comfort” application. While a normal office space 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 increase within the area. Also, greater air volumes give the higher sensible temperature ratios required by telecom equipment.
Air Filtration

Filtration of both room pressurization and recirculation air is critical in a communications site, and the air filter have to 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 Electronic product please contact us at Tenar-elektronik