Thermal mass as part of a wider cooling strategy

摘要

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.