Highlights in 4.7


Below is a list of of the most important news in IDA ICE 4.7.

 Highlights in 4.7.1

leaf Daylight1

Advanced daylight calculation by interfacing the Radiance™ lighting simulation tool. Easy calculation setup, execution and results visualization, all inside IDA ICE.  Calculation of daylight factor and illuminance on selected zones or user defined measuring planes placed inside or outside of the building. Selection of sky models including CIE standard sky models and Perez climate based sky model. Results presentation with average, minimum, maximum and uniformity ratio and color coded field visualization including possibility to show percentage of area above or below a threshold value.





leaf Parallelization2

IDA ICE now takes advantage of the fact that almost all new computers are equipped with multiple processor cores and are able to run several processes in parallel:

  • The simulation can be split into several shorter time segments which are simulated in parallel.

  • All cases that are presently open in the session can be simulated in parallel on several processes. This is a simple and efficient way to run a batch of cases.

  • Different versions are simulated in parallel on several processes (using the version handling system).

  • The RadianceTM daylight calculation of different zones, measuring planes and time points are distributed on several processes and run in parallel.

  • Start additional IDA ICE sessions from the file menu. In this way you can work on several sessions in parallel, both during modeling and during simulation.



leaf Windows and shading devices

New features for windows and shading devices:

  • Six different types of typical shading devices can easily be selected for the detailed window model. Access to manufacturer data for different shading materials has been enabled. The shading devices are visualized in the 3D view and their movement can be animated.

  • For both simplified and detailed windows, drop arm and markisolette external shading devices can easily be defined without drawing. These shading devices are visualized in the 3D view and their movement can be animated.

  • It is now possible to create custom control macros for external shading devices², and the default location of the light sensor is now on the outer side of a window.




leaf Climate data

New features for climate data:

  • New design-day data from the ASHRAE Fundamentals 2013 database for 6443 locations across the world is now available. This data contains hot (and cold) extreme days for every month of the year, allowing you to compute cooling loads also for ‘unusual’ months.

  • New hourly weather data from the IWEC2 data set for 3012 worldwide locations (many of them matching the design-day data).

  • The climate data is automatically adjusted to compensate any longitudinal difference between the building and the weather station.

  • Easy download of missing climate data.



leaf New cooling load calculation

A new cooling load calculation algorithm with automatic detection of “the worst day of the year” has been implemented, using monthly extreme weather data from the ASHRAE Fundamentals 2013 database. For modern buildings with low transmission losses, room cooling loads may peak in February or March, not during the summer as could be expected. The new method will detect this automatically. It will also automatically save peak design days for each zone and air handling unit as well as for the primary cooling system. 



leaf Results

Results of multiple simulations are now saved with the project file, and the Results tab has been replaced with two new tabs; Summary and Details. The Summary tab includes summary tables for the zones, air handling units and the building. For cooling load calculations, a summary of individual peak cases is presented. The Details tab features new ways of presenting multiple diagrams together, and it uses snapping crosshairs for easy reading.






leaf Simulate selected zones

Selected zones can automatically be cloned to a new model. This makes it quick and easy to study the behavior of these zones, without having to run the whole original building.



leaf IDA ICE Portal

A portal is now shown at startup, featuring IDA ICE related news, information about upcoming events, links to video tutorials and the latest forum posts. It also includes contact information and a license summary.





leaf Improved IFC import3

It is now possible to map IFC space types to zone templates, and to convert all IFC spaces to zones in one click.

Import of IFC files, validated with the IDA ICE add-on for simplebim, has been improved:

  • For curtain walls, transparent panels are imported as windows and non-transparent panels are imported as walls.
  • The building body can now be defined by a separate space object in the IFC file.



leaf Merge zones (beta)

Zones can now easily be merged together into larger zones. This feature enables you to change the zoning of the building without having to redraw the zones. It is also a simple way to create complicated zone geometries.



leaf New ESBO version

A redesigned version of ESBO (Early Stage Building Optimization) is released, including:

  • Manufacturer data for room units and solar protection devices are now available directly in ESBO as well as in IDA ICE.

  • Possibility to remove the hot and cold tanks. The default model is now size-free and without tanks.



leaf VELUX EIC Visualizer Professional

The professional version of VELUX Energy and Indoor Climate (EIC) Visualizer is now included. The VELUX EIC Visualizer focuses on windows and solar shading and is used to evaluate the performance of single-family houses with respect to energy, ventilation and indoor climate. Read more >



leaf More features in the Standard edition

Features previously only found in the Expert edition, or in the extensions Enhanced Windows Models4, and Slab Cooling and Heatings, are now included directly in the Standard edition:

  • Openable windows and exterior doors.

  • Natural ventilation controlled by schedules (arbitrary control function block diagrams with the Expert edition).

  • Simulate ventilated double skin facades and other complex glass facades.

  • Detailed pane-by-pane window model according to ISO 15099 is included, allowing for more realistic and detailed simulation of windows. Properties for each layer (panes, cavities and shades) can be defined, making it possible to construct arbitrary window configurations. An extensive database is included.

  • Handle embedded heating and cooling systems (TABS) – both water based and electrical. 

  • Combined heating and cooling panels. 



leaf Debugging of advanced level systems2

When the advanced level is visible during simulation the slowest converging component is shown in red each time step. With this feature, problematic component models are more easily detected.





leaf Fan-coil model

A new dedicated fan-coil model is available that has more appropriate parameters and that is numerically more efficient. By setting the fan-power to zero, this model can also be used as an “ideal unit” that connects to the hydronic system.



leaf Compressed binary file format

The default option is now to save the entire IDA ICE project in one single binary file. This makes it easier to copy IDA ICE projects and to incorporate them in file handling systems.



leaf Autosave

Your IDA ICE project is now automatically saved every 10 minutes, and before and after each simulation.



leaf Control macros2

New features for control macros:

  • Ideal coolers and heaters can now be controlled by custom control macros.

  • In custom control macros, the access to parameters of a controlled device is made easier. No script is required.

Highlights in 4.7.1

leaf Exhaust air heat pump

Exhaust air heat pump is now available at the standard level of IDA ICE. It is quick and easy to set up a heat pump with liquid-coupled exhaust air heat recovery and storage tank. Sizing of flow rate and heat pump is supported.

leaf Split5 and merge zones (beta)

Zones can now easily be split into smaller zones or merged together into larger zones. These features enables you to change the zoning of the building without having to redraw the zones. It is also a simple way to create complicated zone geometries.

leaf New liquid circuit between AHU and Plant

A new custom liquid circuit between the air handling unit and the plant simplifies the generation of arbitrarily system models.

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Included in the Expert edition and available as extension (Daylight ) to the Standard edition.

Included in the Expert edition.

Included in the Expert edition and available as extension (BIM Import ) to the Standard edition.

4 It will not be possible to create internal openings and large horizontal openings in Standard edition. For this the Expert edition is required. 

5 Available from IDA ICE 4.7.1




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