High-velocity, small-diameter HVAC duct systems that can be easily installed.
许多没有强制空气HVAC系统的老房子的业主, 想增加中央空调和/或暖气管道, but are daunted by the cost and difficulty of the installation process. 安装 of ductwork may require removing large sections of walls, 地板或天花板, 或者添加难看的方块追逐. 然而, high-velocity heating and cooling systems minimize these alterations by using small diameter ducts that can be more easily threaded through floor, 天花板, 和墙蛀牙.
制造商说, these high-velocity systems operate quietly and improve dehumidification, 室内空气混合, 能源效率高于标准的空气输送管道系统.
High-velocity heating and cooling systems use a special fan coil and air handling unit that generates high-pressure air forced through small diameter ducts. The main supply trunk is either a rectangular or round duct that supplies air to flexible, 绝缘, 2“直径的塑料馈线管道. Air passes through sound-suppressing tubing at the end of a duct run before entering the room through a plastic collar fitting. According to manufacturers, air is supplied at 440 to 1200 cubic feet per minute (CFM).
High-velocity systems use standard outdoor condensing units for air conditioning and heat pump systems. 作为一个选项, a water coil can be mounted in the air handling unit for boiler heating or chilled water cooling. 另外, adding a bank of electric heating elements to the air handler can provide heating capability to a high-velocity air-conditioning system. High-velocity system air handlers can satisfy cooling capacities between 18,000年和60,000 BTUH和加热能力在24之间,000年和143年,000 BTUH.
The mini-duct air distribution system removes approximately 30% more moisture in the cooling mode than conventional systems. 这导致空气更冷、更干燥. Lower humidity levels create a more comfortable environment, even at a higher temperature. 小型风管空气分配系统可以安装在任何家庭, 不管设计如何, 建设, 或者很少或没有重塑的年龄.
小型风管配风系统安装快捷方便. 小灵活, 绝缘 tubing is designed to fit the existing structure without major remodeling. The tubing requires approximately 1/10th of the space of conventional central air conditioning.
High-velocity air distribution systems are distributed by certified contractors or may be purchased directly from the manufacturer or distributor. 然而, it is important to note that some heating and cooling professionals are unfamiliar with high-velocity ducts. The systems commonly require a greater number of outlets--(about 5 outlets per ton of cooling, 或每2400 btu加热一个出口), ——增加了材料成本和安装时间.
The initial costs for mini-duct systems are greater than their conventional counterparts.
The 空调 and Refrigeration Institute (ARI) certifies high-velocity air distribution systems for use with numerous heat pumps, 空调, 和热源.
High-velocity heating and cooling systems should be installed by manufacturer-authorized heating and cooling professionals. Small diameter ducts may be run through penetrations in floor joists, 不像标准尺寸管道的系统. 在房间的各个区域设置出风口, 比如天花板的角落, 或在窗户或门旁边, can result in a high-velocity output that improves room air mixture without causing discomfort to occupants.
The mini-duct systems typically carry a manufacturer's warranty for a period of 1 year from the date of installation. 然而, some parts of the system may not be covered by this warranty. 详情请参见store.
Manufacturers claim that dehumidification with high-velocity air distribution is better than for conventional forced-air systems. 在空调季节, lower humidity levels can allow occupants to feel comfortable with the thermostat set at a higher temperature, 从而降低能源成本. 无论是在暖季还是冷季, delivering air at higher velocity through smaller supply lines mixes the room air more effectively, 降低温度分层, and eliminating the need to place duct outlets at windows or exterior walls to avoid hot/cold spots.
安装在现有的家庭, 2“供应线可以通过托梁馈入, 墙蛀牙, 以及常见障碍物周围, 这样就可以避免昂贵且破坏性的结构改变. This can be beneficial in applications where existing architectural features, 像石膏模型, 更改或复制会很难吗. 因为这个原因, high-velocity systems can be the most cost-effective option for retrofits, although they may be more expensive than conventional ductwork in new 建设.
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