Construction, Validation and Testing of a Water Table for Natural Ventilation Analysis

Monisha Royan, Prasad Vaidya | 2020


Natural Ventilation in mixed mode cooling presents an opportunity to reduce the dependence on air-conditioning for cooling and ventilation, especially in residential buildings. Intuitive design approaches for natural ventilation can lead to less than optimal performance, and performance analysis is necessary for more predictable performance. However, analytical tools such as CFD modelling can be too complex and time consuming to be accessible to design professionals for assessing natural ventilation flows of real buildings with elaborate geometry. Conversely, simplified approaches may not represent the complex conditions in the building. The water table apparatus was developed as an affordable and accessible tool to simulate air movement, visualize ventilation flows, and enable quantitative comparative analysis.