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Startseite - GBT Forum - Fan Coils - Dezentrale Lüftung
Fan Coils - Dezentrale Lüftung
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Datum |
Benutzer |
Fan Coils - Dezentrale Lüftung
Hallo zusammen,
Kann mir jemand den Unterschied zwischen Fan Coils und Dezentralen Lüftungen erklären?
Vielen Dank
Daniel
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04 Jul 2005
09:53:09 |
Daniel |
Fan Coils System Type Applications VAV Multizone Singel Zone ASHARE HVAC
Guten Tag,
aus meinem und ASHARE Fundus zu Ihrem Thema.Für Übersetzung in Deutsch Hilft Gooogel!
Viel Erfolg
Cammerer
System Types and Applications: In “all-air” systems, air is circulated to the individual spaces by an "air-handling unit", either factory-fabricated or field-assembled (called "built-up" in the industry). Typically, the air-handling unit consists of fans, heating and/or cooling coils, filters, dampers, and controls. All-air systems generally fall into three basic categories (with many variations!) as follow:
Fan Coil Systems: Fan coil units are small single zone units utilized as room terminal units, served with hot and/or chilled water to maintain room conditions. These systems are generally classified as follows:
2-Pipe: Either hot or chilled water is piped throughout the building to a number of fan coil units.
4-Pipe: Two separate piping circuits are used and both hot water and chilled water can be distributed simultaneously.
Fan Box (Fan Powered Terminal Unit): This concept is a variation of the variable air volume terminal reheat system that is designed to eliminate the air distribution problems that are common to VAV systems at low supply air flow rates. The central apparatus is identical to the VAV/reheat system. However, a terminal unit with an internal fan in series with the volume control damper is added. This terminal unit operates as a “constant volume” device as far as total airflow in the space is concerned, but as a “variable volume” device for temperature control.
Variable Air Volume (VAV): Generally, the variable air volume system delivers cooling only, varying the volume of supply air to a particular space based on thermostat requirements and is often the most energy-efficient selection for comfort air-conditioning applications.
Multizone: Typically, the multizone system is applied to buildings where individual room control is not necessary, but there are enough different load conditions to eliminate use of the single zone system. The “traditional” multizone system delivers both hot air and cold air to each set of zone mixing dampers that, under thermostat control, modulate to blend the two air streams to yield a zone supply temperature required to satisfy the imposed load. This blending amounts to reheat and makes the traditional multizone system relatively energy inefficient.
Single Zone: Of the all-air systems, this is perhaps the simplest and more energy-efficient type of secondary systems. Basically, this system consists of an air-handling unit with a heating and cooling coil controlled in sequence in response to the room conditions as indicated by the room thermostat. It provides a constant amount of supply air, delivering warmer or cooler air depending on whether the space is calling for heating or cooling. During part load conditions, total airflow remains constant and discharge air temperature is varied to maintain the desired room temperature
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04 Jul 2005
14:47:33 |
Cammerer |
Fan Coils System Type Applications VAV Multizone Singel Zone ASHARE HVAC
Danke für die umfangreiche Info
MfG
Daniel
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05 Jul 2005
10:50:54 |
Daniel |
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