Trial / Demo
Last year IES and Passivent partnered to allow users to quickly assign and analyse the effect of Passivent Roof Ventilation Terminals within their buildings. In the first release, the Passivent Airscoop® terminal (without low level inlets) was included within IES Virtual Environment (IESVE) 2023 Feature Pack 5. However, within the latest release of IESVE 2024 Feature Pack 1, the VE now supports the full range of Passivent roof ventilation terminals (with low-level inlets).
Within the IESVE, the addition and simulation of these terminals has been made as simple as possible. We have created the terminals in detail for our users and these require very little adjustment to allow accurate simulation results. A dedicated VE Navigator guides you through the step-by-step process from importing the products into your model, configuring their operation, preparing and applying to rooms, to thermal simulation and compliance analysis.
The Passivent Navigator walks you through the steps in detail, taking you through importing the correct terminals, assigning these to the space, and finalising the components.
The process of importing the roof terminals is simple and quick - these are pre-made and can be imported from our library, choosing the correct size and style from the list as seen here:
Once imported, the terminals can be added to the space by moving to the space level in the room that you wish to add the terminal to, selecting the component dropdown and inserting the appropriate terminal.
You are then given options to add a duct length and a plane. The plane should fall higher than the space and the duct length should be long enough to take the duct into the space (e.g. with a roof height of 3m, a plane of 3.5m with a 1m duct would be appropriate.)
Once the appropriate height has been selected, you simply place the terminal in the space by clicking in the correct place. Once you are happy with where the terminal has been placed, the finalise button will create the terminal in the model.
Once you have assigned and finalised Passivent Roof Terminals to rooms in your model, the model should be ready to simulate.
You can choose to manually run pre-thermal simulations, such as Suncast (a link is provided on the Navigator) or set these to run automatically by setting them ON with the Apache simulation dialog.
The results from the simulation can be viewed as normal in VistaPro, and any airflow through the terminal can be viewed using the MacroFlo arrows. This will allow you to assess the impact that installing Passivent roof terminals will have on the space.
Further developments are underway for phase 3 of the Passivent and IES partnership. For more information on Passivent terminals within IESVE, you can:
Download / upgrade to IESVE 2024.1 to start using the Navigator today.
