Trial / Demo
The EU Navigator consists of three main features, developed on request from European VE users.
EN-12831 Heating Loads Calculation
Using the EN-12831 European heating load calculation, the Navigator extracts from the VE model room by room the areas and respective U-value of each surface and the maximum heating setpoint, ventilation rate and supply temperature. It exports it to an Excel spreadsheet where heat losses to the outdoor and adjacent rooms.
PMV Optimiser
Predicted Mean Vote (PMV) is a usual index for thermal comfort. It statistically predicts how most people will feel given 6 relevant physical parameters: air temperature, average surface temperature, relative humidity, air velocity and people metabolic rate and clothing.
Four of these parameters are extracted from dynamic simulation results (air temperature, average surface temperature, relative humidity, people metabolic rate). The PMV is then evaluated for each reporting timestep and compared to a user input comfort range. If the PMV falls outside of this range, the Navigator will amend the clothing level and/or the air velocity by increment of 0.1 adequately until the PMV is within the desired range of the input exit the allowed ranges. After the whole simulation period is evaluated, the number of failed timesteps is summed and reported.
The Navigator exports the optimisation results into an Excel spreadsheet to provide the user with full details for each room and timestep.
gbXML Export
This feature is a modified gbXML export designed for French compliance tier software tools.
The gbXML of the VE model (geometry + Construction data) includes under the gbXML SpaceType attribute the user input usage category as defined in the French regulation. This extra data (not present in the basic gbXML export) is then used in tier software for faster import and simulation.
