Redesigned Floor plan
|The Floor plan view and other 2D geometrical views have been redesigned to improve performance and ease of use:
Spectral properties of glass panes and shading materials
Spectral calculation is introduced for glazing and integrated sunshades. This means that the properties of the whole glazing/sunshade system are calculated for each wavelength interval. Spectral calculations give higher accuracy than non-spectral. For modern glazing and shading materials, non-spectral calculations can give significant errors (> 10%) and viable system combinations may be missed. Spectral data can be uploaded by manufacturers at any time and is automatically synchronized with user databases.
Overheating calculation is a new simulation type to automatically find the worst day for rooms that have no or limited mechanical cooling. The result is presented at the time of either maximal air temperature, operative temperature or PPD.
Parametric runs and optimization inside IDA ICE (beta)1
Using the simulation model to optimize for example window properties, supply air temperature or the size and slope of solar collectors is an obvious application. With IDA ICE 4.8 this is as easy as it sounds. The user can easily drag and drop input parameters and target output (cost function) from the model into the interface. In addition to optimization, Monte-Carlo and sensitivity analysis (Morris method) are supported.
Graphical scripting in the same style as regular advanced level IDA modelling is provided in order to easily create parameter relations that are suitable for parametric runs. The same technique can be used also to formulate complex objective and constraint functions.
Enthalpy wheel heat exchanger
|An air handling unit with a new rotary heat exchanger model, based on prEN 16798-5-1, is introduced. It has three options with different types of coatings:
New thermal bridge definitions
National standards are based on different conventions for defining thermal bridges and envelope area. IDA ICE 4.8 supports five different definitions of thermal bridges and envelope area, as defined in ISO 10211.
The selected envelope area definition is visualized in the 3D view when wall thickness is turned on.
Updates to Daylight2
|The Daylight extension has been updated in IDA ICE 4.8. Here are a few examples:
Usability and productivity improvements
|IDA ICE 4.8 includes a large number of usability and productivity improvements, many of them suggested by our users. Here are a few examples:
New types of integrated shading
Three new types of typical shading devices can now easily be selected for the detailed window model; Micro lamellas (shading dependent on two angles), Venetian blinds between panes and Screens between panes. Access to manufacturer data for shading materials has been enabled. The shading devices are visualized in the 3D view and their movement can be animated.
Improvements in 3D
|The 3D view has been improved. Here are some examples:
Split and merge zones (beta)
Zones can now easily be split into smaller zones, by inserting a slab at a specified height or by drawing a dividing wall. With these features a complicated building can be divided into floors and zones.
Zones can also be merged together into larger zones. This feature enables you to change the zoning of a building without having to redraw the zones. It is also a simple way to create complicated zone geometries.
Improved IFC import and export3
The IFC import has been improved in several ways. Now also exporting key results via IFC has been implemented.
The free IDA ICE Viewer can be used to check IFC files for import problems.
Phase Change Materials (beta)1
Layers in walls and floors can now be Phase Change Materials (PCM). Using such materials, radically improved heat storage capacity can be achieved.
New model for heat from occupants
Thermal comfort is calculated in IDA ICE according to ISO 7730. In IDA ICE 4.7.1 and earlier, the heat loss from a person that is too cold (PMV < 0) was larger than the specified metabolism. In IDA ICE 4.8, the clothing level is adjusted instead so that the PMV value becomes close to zero, which means that the total heat losses always become equal to the metabolism. This change only applies to the calculation of occupant heat. The calculation of PMV/PPD is not affected.
Application Programming Interface (beta)1
IDA ICE can now be controlled by an external program by direct calls from, e.g. Python, Matlab, Excel, C++, Java or similar. By using socket communication, also processes on remote machines can control an IDA ICE instance. A library of functions based on the Document Object Model standard has been implemented for interacting with the IDA Modeller data structures. Essentially any operation that can be performed manually can also be done remotely. Running simulations from a remote process requires a special licensing agreement.
1 Included in the Expert edition.
2 Included in the Expert edition and available as extension (Daylight) to the Standard edition.
3 Included in the Expert edition and available as extension (BIM Import) to the Standard edition.