Posts Tagged ‘humidity’

What Is Precision Air Conditioner And Why Is It Should?

What is precision air conditioner and why is it necessary?br /
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Compared to yesterdays monolithic telephone system, todays 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 wants for reliability and working have never been greater. Precision a href=http://www.tenar-elektronik.com/ target=_blankAir Conditioning/a is one cornerstone of a usefully-designed support system for this network.br /
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Communications network cooling requirements differ from typical commercial or luxury requirements, in the following significant ways. br /
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Commercial cooling systems may be required to work only during heats months and during normal running hours. Communications sites, however, generate heat 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 discount as -20deg. Because of this constant cooling requirement, the selection of reliable and electricity economical components are basic. br /
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Unlike frequent commercial split air conditioner systems, these precision split air conditioner units are designed to work continually, require few maintenance, and give precise control of heat and humidity. Standard air conditioners quickly lose efficiency and break under continual performance. br /
Electronic Load br /
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While all cooling load is determined by the house building, solar load, room 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 progression of cooling, most air conditioners cool the air (sensible cooling) and take away moisture (latent cooling). Since electronic equipment does not release or absorb moisture, the split air conditioner selected for a communications site need primarily cool the air, not eliminate moisture. The ac split must normally be selected with a sensible heat ratio of no lower than 78 percent.br /
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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 electricity to cool the same site, and could reduce humidity levels in the room to unacceptable levels. br /
Precision split air conditioner is designed from the ground up to protect equipment, not people. Relaxation split air conditioner systems are designed for the luxury of people, and simply cannot offer the warm of environment required by high-operation telecom equipment. br /
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There are fundamental differences between standard and precision air conditioning…reasons why people coolers wont protect equipment. People are far more tolerant of temperature and humidity swings, whereas equipment requires precise levels of temperature and humidity maintained around the clock. This means weighty-job systems and precision controls; people coolers dont have either the strength or sensitivity for the job. br /
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Heat Control br /
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The high density heat load in a telecommunications space is beyond the capacity of ordinary 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 heat in small areas, six to ten times the temperature density of normal office room, the ac split system must have more than just enough cooling capability.br /
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It should have the precision to react quickly to a drastic change in temperature load and prevent wide heat fluctuations, which is something a large building system cannot do. br /
Humidity Manage br /
Telecommunications equipment should be protected from both internal condensation and static energy discharges. Maintaining the correct humidity level in the computer area is just as vital as maintaining proper temperature.br /
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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 performance or even shut down the telecom system. An frequent condominium system cannot normally manage the environment within these boundaries. br /
Air Volume br /
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Telecommunications equipment requires greater air volumes than usual ac split can supply. Typical relaxation systems are designed to give between 300 and 400 CFM (cubic feet per minute) per ton of cooling. Telecom systems require amongst 500 and 600 CFM per ton. The high-density temperature load in a relatively small area requires more changes of air than a less dense luxury 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 temperature fluctuations could build up within the space. Also, greater air volumes supply the higher sensible temperature ratios required by telecom equipment. br /
Air Filtration br /
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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. br /
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If you need further information about air conditioners and other a href=http://www.tenar-elektronik.com/ target=_blankElectronics/a product please contact us at a href=http://www.tenar-elektronik.com/ target=_blankTenarelektronik/a

Knowing Air Conditioning Feature

Air conditioner applicationsbr /
Ceiling ac split broadly ac split applications into comfort and process.br /
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Comfort applications aim to give a building indoor environment that remains relatively constant in a range preferred by humans despite changes in external weather conditions or in internal temperature loads.br /
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Air conditioning makes deep plan buildings feasible, for otherwise theyd should be built narrower or with light wells so that inner spaces receive sufficient outdoor air via natural ventilation. Split air conditioner also allows buildings to be taller since wind speed increases significantly with altitude making natural ventilation impractical for very tall buildings. Comfort applications for various structure types are quite different and may be categorized asbr /
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* Cheap-Rise Residential buildings, including single family houses, duplexes, and small apartment buildingsbr /
* High-Rise Residential buildings, such as tall dormitories and apartment blocksbr /
* Commercial buildings, which are built for commerce, including offices, malls, shopping centers, restaurants, etc.br /
* Horizontal a href=http://www.tenar-elektronik.com/ target=_blankAC Split/a, which includes hospitals, governmental, academic, and so on.br /
* Industrial spaces where thermal comfort of workers is desired.br /
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In addition to buildings, air conditioning can be used for many models of transportation – motor-cars and other land vehicles, trains, ships, aircraft, and spacecraft.br /
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Process applications aim to supply a suitable environment for a process being carried out, regardless of internal temperature and humidity loads and external weather conditions. Although often in the comfort range, it is the desires of the process that determine conditions, not human preference. Process applications include these:br /
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* Hospital operating theatres, in which air is filtered to high levels to low infection risk and the humidity controlled to limit patient dehydration. Although temperatures are often in the comfort range, some specialist procedures such as open heart surgery require low temperatures (in relation to 18 °C, 64 °F) and others such as neonatal relatively high temperatures (about 28 °C, 82 °F).br /
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* Cleanrooms for the production of integrated circuits, pharmaceuticals, and the like, in which very high levels of air cleanliness and control of heat and humidity are required for the success of the process.br /
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* Facilities for breeding laboratory animals. Since many animals normally only reproduce in spring, holding them in rooms at which conditions mirror spring entirely year can cause them to reproduce year-round.br /
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* Aircraft Ceiling air conditioning. Although nominally aimed at providing comfort for passengers and cooling of equipment, aircraft air conditioner presents a special challenge because of the changing density altitude associated with changes in altitude, humidity and heat of the outer air[vague].br /
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* Data centersbr /
* Textile factoriesbr /
* Physical testing facilitiesbr /
* Plants and farmbr /
growing areasbr /
* Nuclear facilitiesbr /
* Chemical and biological laboratoriesbr /
* Minesbr /
* Industrial environmentsbr /
* Food cooking and processing areasbr /
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In both comfort and process a href=http://www.tenar-elektronik.com/ target=_blankElectronics/a applications the objective may be to not only control heat, but also humidity, air excellence and air movement from space to area.br /
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If you need further information please contact us at a href=http://www.tenar-elektronik.com/ target=_blankTenarelektronik/abr /
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