Abstract

Ceiling diffusers are one of the most important elements of ventilation and air-conditioning installations. They have a significant impact on the speed and temperature distribution of air. The basic task of these devices is to provide the required air stream while maintaining its appropriate parameters in the occupied zone and low noise levels in the room. Square ceiling diffusers are designed for use in low- and medium-pressure ventilation systems. The diffusers allow obtaining 1-, 2-, 3-, or 4-way air supply. Knowledge of the airflow formed by the diffuser is essential in order to ensure the comfort of people staying in a ventilated room. Designers of the diffusers nowadays mainly use advanced software and computational fluid dynamics modeling technique. Numerical modeling allows to quickly analyzing the fluid flow. However, a very important problem is the consistency of the results obtained by numerical methods with the results obtained on an experimental way. The work presents a laboratory stand designed to test ceiling diffusers. In this research study, the single square ceiling diffuser was experimentally and numerically analyzed.

摘要

天花板扩散器是通风和空调装置中最重要的元素之一。它们对空气的速度和温度分布有重大影响。这些设备的基本任务是提供所需的气流，同时在占用区域保持其适当的参数和房间内的低噪音水平。方形天花板扩散器设计用于低压和中压通风系统。扩散器允许获得 1 路、2 路、3 路或 4 路空气供应。了解扩散器形成的气流对于确保人们在通风房间内的舒适度至关重要。现在的扩散器设计者主要使用先进的软件和计算流体动力学建模技术。数值建模允许快速分析流体流动。然而，一个非常重要的问题是数值方法获得的结果与实验方法获得的结果的一致性。该作品展示了一个设计用于测试天花板扩散器的实验室支架。在这项研究中，对单个方形天花板扩散器进行了实验和数值分析。