This tool, developed in the framework of International Energy Agency Energy in Buildings and Communities programme (IEA- EBC) Annex 62 Ventilative cooling, analyses the potential of ventilative cooling by taking into account not only climate conditions, but also building envelope thermal properties, internal gains and ventilation needs.
The analysis is based on a single-zone thermal model applied to user-input climatic (hourly) basis and thermal data. For each hour of the annual climatic record of the given location, an algorithm identifies over the occupied time the number of hours when ventilative cooling is useful and estimates the airflow rates needed to prevent building overheating.
The tool is particularly suitable for early design phases, as it requires only basic information about a typical room of the building, the building use and an annual climatic record.
Furthermore, the tool provides building designers with useful information about the level of ventilation rates needed to offset given rates of internal heat gains.