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排氣系統(tǒng)可以并入空調(diào)機(jī)組，也可以是單獨(dú)的遠(yuǎn)程排氣系統(tǒng)。送風(fēng)經(jīng)過(guò)加熱或冷卻、加濕或除濕，然后排放到空間中。風(fēng)門回風(fēng)機(jī)回風(fēng)排氣風(fēng)門室外空氣混合空氣過(guò)濾器盤管送風(fēng)機(jī)送風(fēng)C2712圖15。使用回風(fēng)的通風(fēng)系統(tǒng)。圖14和15所示的通風(fēng)系統(tǒng)應(yīng)提供可接受的室內(nèi)空氣質(zhì)量，盡可能利用室外空氣進(jìn)行冷卻（或補(bǔ)充冷卻），并保持適當(dāng)?shù)慕ㄖ鰤?。有關(guān)通風(fēng)的更多信息，請(qǐng)參閱本手冊(cè)的以下章節(jié)：-室內(nèi)空氣質(zhì)量基礎(chǔ)知識(shí)。-空氣處理系統(tǒng)控制應(yīng)用-建筑氣流系統(tǒng)控制應(yīng)用。過(guò)濾空氣過(guò)濾是中央空氣處理系統(tǒng)的重要組成部分，通常被視為通風(fēng)系統(tǒng)的一部分。有兩種基本類型的過(guò)濾器可用：機(jī)械過(guò)濾器和靜電除塵過(guò)濾器（也稱為電子空氣濾清器）。機(jī)械過(guò)濾器分為標(biāo)準(zhǔn)過(guò)濾器和高效過(guò)濾器。
The exhaust-air system may be incorporated into the air conditioning unit, or it may be a separate remote exhaust. Supply air is heated or cooled, humidified or dehumidified, and discharged into the space. DAMPER RETURN FAN RETURN AIR EXHAUST AIR DAMPERS OUTDOOR AIR MIXED AIR FILTER COIL SUPPLY FAN SUPPLY AIR C2712 Fig. 15. Ventilation System Using Return Air. Ventilation systems as shown in Figures 14 and 15 should provide an acceptable indoor air quality, utilize outdoor air for cooling (or to supplement cooling) when possible, and maintain proper building pressurization. For more information on ventilation, refer to the following sections of this manual: — Indoor Air Quality Fundamentals. — Air Handling System Control Applications. — Building Airflow System Control Applications. FILTRATION Air filtration is an important part of the central air handling system and is usually considered part of the ventilation system. Two basic types of filters are available: mechanical filters and electrostatic precipitation filters (also called electronic air cleaners). Mechanical filters are subdivided into standard and high efficiency.
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