Jumat, 22 Juni 2018

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Air Balancing 101
src: askweldin.com

A register is a grille with moving parts, capable of opening and closing and a directed air flow, which is part of the heating, ventilation and air conditioning (HVAC) system of the building. The placement and size of registers are essential for HVAC efficiency. The damper register is also important, and can work security.


Video Register (air and heating)



Daftar vs. grille

The grille is a hollow cover for air ducts (used for heating, cooling, or ventilation, or a combination of both). Grilles sometimes have lattice that allows directed air flow. The registers are different from the grille where the damper is included. In practice, however, the terms "grille", "register", and "return" are often used interchangeably, and care must be taken to determine the meaning of the term used.

Maps Register (air and heating)


Size and list placement

The placement of registers is key in creating efficient HVAC systems. Typically, registers are placed near a window or door, which is where the greatest heat/cold loss occurs. In contrast, a return (the grilled duct that sucks air back to the HVAC system for heating or cooling) is usually placed on the wall or ceiling closest to the center of the building. Generally, in rooms where it is important to maintain a constant temperature of two registers (one placed near the ceiling to provide cool air, and one placed on the floor to provide hot air) and two returns (one high, one low) will be used. HVAC systems generally have one list and one refund per room.

The size of the registers varies according to the heating and cooling requirements of the room. If the register is too small, the HVAC system will need to push air through the channel at a faster rate to achieve the desired heating or cooling. This can create a hasty sound that can disturb the occupants or interrupt the conversation or work (such as voice recording). The air velocity through registers is usually kept low enough to be covered by background noise. (Ambient higher background noise levels, such as in restaurants, allow for higher airspeed.) On the other hand, the air velocity should be high enough to reach the desired temperature. Register is an important part of the HVAC system. If improperly installed and closely connected to the air ducts, air will spill around the register and greatly reduce the efficiency of the HVAC system. Ideally, the room will have heating and cooling registers. In practice, cost considerations usually require that heating and cooling are provided by the same registers. In such cases, heating is most often preceded than cooling, and registers are usually found close to the floor.

For heating purposes, floor registers are preferred. This is because the hot air rises, and when it cools down, it falls. It creates good indoor air circulation, and helps maintain a more even temperature because the hot and cold air is mixed more thoroughly. The floor registers generally have a grille strong enough for humans to walk without damaging the grille. It is rare to find floor registers mounted less than 6 inches (15 cm) from a corner of a room. When the floor registers are impractical or desirable, the wall registers are used. The correct placement of the wall heater registers is very important. Generally, the heating register will be directly across the exterior window. Hot air from the list will mix with the cold air coming from the window, cold, and falling to the floor - creating a good air circulation. However, hot air should be pushed from the register with enough power (or "throw") so it will cross the room and reach the window. If there are too few throws, the hot air will stop moving half way across the room, cold air from the window will not be heated (creates a feeling of cold), and air circulation will suffer.

Vent/Register Gadgets > Interstate AC
src: www.interstateac.com


Submit silencer

Damper registers provide important functions. In particular, the silencer allows for the amount of hot or cold air into the room to be controlled, providing more accurate control over room temperature. The damper also allows air to be switched off in the unused rooms, increasing the efficiency of the HVAC system. Silencers can also help adjust the HVAC system for seasonal use. During the winter months, for example, the AC registers can be closed to prevent cold air from being pulled from the room. This allows hot air to mix more perfectly with the cold air in the room, increasing the efficiency of the HVAC system. (Returns should be efficient enough to attract cooler air.)

Source of the article : Wikipedia

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