ABSTRACT

Active chilled beams (ACBs) are often modelled as generic cooling devices. Due to induction, the air flow discharged from an ACB is several times higher than supplied from the air handling unit, and due to its design, it affects the temperature of the ceiling to a greater extent than an arbitrary cooling device. This paper investigates the impact of taking these features into account when simulating air and operative temperature in a room equipped with an ACB. The building performance simulation software IDA ICE is used for analysis and the simulations are compared with full-scale experiments. The main findings are that simulations which take into account the features mentioned above correspond more closely with measurements. If designing for a certain operative temperature, this reduces the required design cooling capacity. Although negligible in many applications, the magnitude of this reduction is 9% with high-temperature cooling.

摘要

主动冷梁（ACB）通常被建模为通用冷却设备。由于感应，从ACB排出的气流比从空气处理单元提供的气流高几倍，并且由于其设计，与任意冷却装置相比，它对天花板温度的影响更大。本文研究了在配备ACB的房间中模拟空气和工作温度时考虑这些功能的影响。使用建筑性能模拟软件IDA ICE进行分析，并将模拟与全面实验进行比较。主要发现是，考虑到上述特征的模拟与测量更加接近。如果设计用于特定的工作温度，则会降低所需的设计冷却能力。