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Knowledgebase : Natural Ventilation
When using calculated natural ventilation with very large airflow openings (relative to the size of the rest of the zone) an EnergyPlus error can occur: "Too many iterations (SOLVZP) in Airflow Network simulation" This is caused by EnergyPlus failing ...
By default EnergyPlus assumes that the purpose of natural ventilation is to cool the building and it shuts any open windows, vents and doors when the outside air temperature is warmer than inside air to avoid further heating the space. However in some c...
Yes, DesignBuilder is well suited to modelling natural ventilation at simple (scheduled) and detailed (calculated) levels: SCHEDULED: You define the natural ventilation rate and its operation. The advantages of 'Scheduled' natural ventilation ar...
There are in principle two possible approaches when modelling tall spaces such as atria using DesignBuilder with calculated natural ventilation:1. Model the atrium as a single tall space or,2. Model the atrium as a series of horizontal slices with air f...
Here is a checklist to work through when setting up a 'Calculated' natural ventilation model:Switch Natural ventilation Model option to 'Calculated'.If you are not modelling daylight you may want to speed simulations up using 'Lump similar windows on su...