FES systems are generally described as either passive or active systems. All FES systems can be utilised effectively in steel-framed buildings. Passive FES systems rely on natural ventilation to disperse the heat absorbed by the upper floor slabs. As they are dependent on wind direction and speed, they are only suitable for buildings with relatively simple requirements and low cooling loads (up to 30 W/m~2). They are easy to operate, with low capital, maintenance and operation costs. Natural ventilation can be achieved from one side only, by cross ventilation or by stack ventilation, generally using atria. The control of the ventilation is fundamental to the optimum operation of passive FES systems.
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机译:FES系统通常被描述为被动或主动系统。所有FES系统均可在钢结构建筑中有效利用。被动式FES系统依靠自然通风来分散上层楼板吸收的热量。由于它们取决于风向和风速,因此仅适用于要求相对简单且制冷负荷低(高达30 W / m〜2)的建筑物。它们易于操作,投资,维护和运营成本低。自然通风只能从一侧通过交叉通风或烟囱通风(通常使用心房)实现。通风控制对于无源FES系统的最佳运行至关重要。
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