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An Energy Analysis of Low-Temperature Air Distribution Systems and Reduced Economizer-Cycle Cooling 低温空气分配系统和省煤器简化循环冷却的能量分析
低温送风系统通常与冰蓄冷系统一起使用,以利用34华氏度至38华氏度的冷冻水。通过使用低温空气分配系统为空间调节或工艺冷却提供一次空气。配电设备可以缩小规模,以显著节省初期成本,并通常降低能源成本。然而,在传统(55华氏度)送风系统中通常可用的自然冷却的一些好处是,在低温送风系统中成本较低。 在45华氏度到60华氏度之间的大部分工作时间允许在传统系统中使用节能器循环,或者需要在低温空气分配系统中进行机械冷却的气候下,通常会遇到这种情况。通过使用每小时一次的建筑能源分析程序,比较传统(55华氏度)送风系统和低温送风系统的能源使用情况,量化了在低温环境下减少节能器循环冷却的能源损失- 美国各地不同位置的温度系统,也表明这种能源损失可以通过与低温送风系统相关的风扇马力节能来克服。关键词:低温,空气分配,节能器,制冷,冰蓄冷,空间制冷,节能,比较,计算,能耗,美国,空调。引文:研讨会,ASHRAE交易,第97卷,Pt。1991年,纽约
Low-temperature supply air systems are often used with an ice storage system to take advantage of the 34 deg F to 38 deg F chilled water available. By using a low-temperature air distribution system to provide primary air for space conditioning or process cooling. distribution equipment can be downsized to offer significant savings in first costs and often lower energy costs. However, some of the benefits of the natural cooling normally available in a conventional (55 deg F) supply air system will be low cost in a low-temperature supply air system. This is generally experienced in climates where a significant portion of the operating hours between 45 deg F and 60 deg F allow the use of the economiser cycle in a conventional system and otherwise require mechanical cooling in a low-temperature air distribution system. By using an hourly building energy analysis program to compare the energy use associated with a conventional (55 deg F) supply air system with the energy use of a low-temperature supply air system, quantifies the energy penalty associated with reduced economiser-cycle cooling in a low-temperature system at various locations throughout the United States and also shows that this energy penalty can be overcome by the savings in fan horsepower energy associated with the low-temperature supply air system.KEYWORDS: low temperature, air distribution, economisers, cooling, ice storage, space cooling, energy conservation, comparing, calculating, energy consumption, USA, air conditioning.
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