Abstract

This study aims to experimentally evaluate the influence of the combination of a supply only ventilation, called here positive input ventilation, and innovative active air vents on the Indoor Air Quality of a house. The positive input ventilation draws fresh air from the outside, filters and pre-heats it before supplying it to living areas. Active air vents are small motorised dampers set up in the upper part of windows able to move according to local pollutants measurements or to the measurements of other active air vents in the house. This combination is expected to improve the Indoor Air Quality by increasing efficiently the air change rate of a room when it is too polluted. The goal of the tests presented in this paper is to evaluate quantitatively the air change rate in a real size environment. To do so, a positive input ventilation and active air vents are set up in an experimental house. The tests were carried out in 3 different rooms. For each room, the air change rate is evaluated for different configurations of the combination. CO2 is used as a trace gas to evaluate the air change rate. Results are promising and show that the studied combination allows a significant of the air change rate of each room. An appropriate Demand Control Ventilation strategy based on the sensors of each active air vents and the communication between all the devices would thus lead to an efficient while simple improvement in the use of a positive input ventilation system.

摘要

本研究旨在通过实验评估仅供应通风（这里称为正输入通风）和创新的主动通风口对房屋室内空气质量的影响。正输入通风从外部吸入新鲜空气，在将其供应到生活区之前对其进行过滤和预热。主动通风口是安装在窗户上部的小型电动风门，能够根据当地污染物测量值或房屋中其他主动通风口的测量值移动。预计这种组合将通过有效提高房间在过度污染时的换气率来改善室内空气质量。本文中提出的测试的目标是定量评估真实大小环境中的空气变化率。为此，在实验房内设置了正输入通风和主动通风口。测试在 3 个不同的房间中进行。对于每个房间，评估组合的不同配置的换气率。CO2 用作微量气体来评估空气变化率。结果是有希望的，并表明所研究的组合可以显着提高每个房间的换气率。因此，基于每个主动通风口的传感器和所有设备之间的通信的适当需求控制通风策略将导致有效而简单的改进正输入通风系统的使用。CO2 用作微量气体来评估空气变化率。结果是有希望的，并表明所研究的组合可以显着提高每个房间的换气率。因此，基于每个主动通风口的传感器和所有设备之间的通信的适当需求控制通风策略将导致有效而简单的改进正输入通风系统的使用。CO2 用作微量气体来评估空气变化率。结果是有希望的，并表明所研究的组合可以显着提高每个房间的换气率。因此，基于每个主动通风口的传感器和所有设备之间的通信的适当需求控制通风策略将导致有效而简单的改进正输入通风系统的使用。