WUFI® Plus / WUFI® Passive Updates

This page offers an overview of the current updates for WUFI® Plus, WUFI® Passive and the accompanying databases and tools.

You can display the internal version number of your WUFI® by choosing the menu item “Help” → “About…”.
The current version of WUFI® Plus and WUFI® Passive is 3.1.1 (as of June 7, 2017).


07.06.2017

WUFI® Plus
WUFI® Passive
3.1.1

New features:

  • Printer drivers aren’t imported on the software startup anymore to speed up the startup time, especially when network printers are used.
  • New print dialog: The page size is now fixed to A4 or Letter and doesn’t depend on the selected printer’s settings anymore.
WUFI® Plus
3.1.1

New features:

  • New option: If the simulation time step is smaller than one hour, a new option appears, which defines if the exterior climate data is interpolated for the shorter time steps, or not.
WUFI® Plus
3.1.1

Fixed bugs:

  • [Fixed] Inner sources in material layers could be defined outside the material layer and thus they weren’t considered in the simulation. In this case, a warning message is shown now.
WUFI® Passive
3.1.1

New features:

  • Added the PHIUS PV utilization calculator for Photovoltaic devices. The annual PV generation depending on the array size can be assumed with the pvwatts calculator from nrel (http://pvwatts.nrel.gov).
  • Revised the reported energy demands for the HVAC system and the (site-) electric energy in the passive house verification report below building elements.
WUFI® Passive
3.1.1

Fixed bugs:

  • [Fixed] The energy demand for the DHW connections of laundry dryers and kitchen dishwasher was neglected for the simplified heat pump model and user defined devices used for DHW.
  • [Fixed] DHW distribution default value for the design flow temperature is set to 140°F (60°C). Removed default setting for the envelope airtightness and type of laundry drying.
DIN 4108-2
3.1.1

New features:

  • Projects in DIN 4108-2 Scope can now be started in batch-mode.
DIN 4108-2
3.1.1

Fixed bugs:

  • [Fixed] Sunscreen – Operation Mode “Reduce overheating” could operate unexpected.
  • [Fixed] The values for natural ventilation during residence time and outer residence time were interchanged in the report “DIN 4108-2 Verification”. Now, the correct values are displayed.

 

11.04.2017

WUFI® Plus
WUFI® Passive
3.1.0

New features:

  • Auto-save function for automatic saving of projects during modification

WUFI® Plus
WUFI® Passive
3.1.0

Fixed bugs:

  • Database entries were missing in certain languages, in case no translation was available. Now the English translation is shown in those cases.
  • Reports did sometimes disappear under certain circumstances.

 

WUFI® Plus
3.1.0

New features:

  • Extended external data options
      • Parameters from an external file can now be converted by multiplication and addition (also zone area or volume dependent)
      • Automatic SI/IP conversion also for external data
      • Internal loads from external data can now be multiplied by zone area/volume

WUFI® Plus
3.1.0

Fixed bugs:

  • For day profiles with time steps of less than one hour the conversion was not correct for all values
  • Bug in the calculation of the mean ceiling surface temperature
WUFI® Passive
3.1.0

Modifications:

The following modifications are a change in methodology and will therefore change the final results:

WUFI® Passive
3.1.0

New features:

  • New reports are available
    • Passive House Verification Report,
    • Passive House REM-Rate Report,
    • Passive House Site Energy Report,
    • Passive House Source Energy Report
WUFI® Passive
3.1.0

Fixed Bugs:

  • If more devices are available for cooling, their share can be defined
  • Changing orientation with right click on Compass icon near 3D Visualization.
DIN 4108-2

New features:

  • Enabled passive cooling through source in component from external file
  • Small modifications of the DIN 4108-2 report
DIN 4108-2

Fixed Bugs:

  • See WUFI® Plus – Scope.
  • Initial temperature is now adjusted according to the DIN 4108-2 minimal temperature related to building use

 

 November 23, 2015

WUFI® Plus
3.0.3
New features:

Fixed error which may occur while Import more than one climate data from XML-file

Fixed error occur for climate Albedo selection: No absorption/emission

 

November 19, 2015

WUFI® Plus
3.0.2
New features:

Added calculation of the Temperature dependent thermal conductivity with the temperature dependent conductivity supplement from the Material database.

WUFI® Passive
3.0.2

New features:

Fixed humidity recovery (efficiency) from mechanical ventilation devices depending on summer ventilation bypass setting

DIN 4108-2
3.0.2
Fixed bugs:

Fixed direct radiation angle depenend solar heat gain coefficient data input

 

October 26, 2015

WUFI® Plus
3.0.1
New features:

sunscreen device operation mode: “Excluding weekends”

Shading calculation accelerated

WUFI® Passive
3.0.1
Fixed bugs:

false error of double heat pump devices

COP of the heat pump (cooling) has no effect on Primary Energy

error sending grouped components (windows) to the passive.dll before hygrothermal simulation

DIN 4108-2
3.0.1
Fixed bugs:

heating degree hours of non-residential buildings corrected

sunscreen device operation mode; missing parameter: max. design temperature

error in quick result box (display error)

Datenbank
DB 24.78
New materials:

14 new product materials have been added to the material database

 

May 18, 2015

WUFI® Plus

WUFI® Passive

WUFI® Plus / Passive Free

3.0.0

Dynamic simulation of heating systems including heat generator, storage tank and different distribution systems (Radiator, TABS); Film visualization

Simulation of shading regarding all visualized components including a fast preprocess shading calculation or a per time step calculation and visualization; global setting for the whole building (all components)

Database update of emission sources including internal load day profiles

Improved Sketch-Up import

Database

DB 24.78

Two generic soils have been added to the “Generic Materials”. Nine soils for purely thermal calculations have been added to “Materials for thermal calculations”. Twelve soils derived from a soil material database have been added to the “North America Database”.

Absorption and emission coefficients for “Gravel roof, generic model”, “Green roof, generic model” and “Green roof, Optigreen system” have been added to the coefficients’ drop-down list.

 

July 16, 2014

WUFI® Plus

WUFI® Passive

WUFI® Plus Therm

2.5.4

Detailed output options for graphics and simulation results in MS Excel have been added

The basic kernel calculation algorithms have been updated to those used in the latest WUFI Pro Version

23 soil materials have been added to the material database.

WUFI® Plus

2.5.4

Some of the indoor climate models derive their hourly indoor data from the hourly outdoor data. For multi-year outdoor climate files, these indoor climate models derived their input only from the first outdoor year. This has been fixed.

The time step for external measurement data is now adjustable. Errors in external files are now identified and displayed.

WUFI® Plus Therm

2.5.4

Analysis for the new standard, “Thermal protection according to DIN 4108-2” has been added. Boundary conditions according to DIN 4108-2 can be set automatically. The output report from the WUFI-Therm dynamic building simulation provides proof that conditions for summer overheating protection have been met.

New system configurations for dynamic simulation of the HVAC system have been added.

An animation for the heating system has been added. This can be viewed during the simulation or as a movie after the simulation.

Database

DB 24.77

A vacuum insulation panel “VIP generic” has been added to the material database.
The material data for “Bayosan LeichttonMörtel LTM 81® have been corrected (the bulk density has been set to 988 kg/m³, the water absorption coefficient has been set to 0.027 kg/m2s0.5 = 1.6 kg/m2h0.5).

50 new product materials have been added to the material database:

Weather data

Weather files for Hradec Králové and Milan have been added.

Weather files for Bordeaux, Brest, Nancy, Marseille and Trappes have been added.

The weather file for Kassel has been removed because it appeared doubtful whether the data were up to today’s standard. (The test reference years for Kassel are still available.)

 

March 1, 2013

WUFI® Plus

WUFI® Plus Therm

2.5.1

The 3-D Editor has been enhanced to allow a faster creation of multi-zone buildings and a more detailed visualization.

External data can be supplied as boundary conditions via a text file – to provide inner loads data, for example.

The new material and weather data in the WUFI database are also available in WUFI Plus.

WUFI® Passive

2.5.1

New established

WUFI Passive combines the steady-state method for the design and the certification of passive houses with the hygrothermal whole building simulation capabilities of WUFI Plus. WUFI Passive has been developed in cooperation with the Passive House Institute US.

Database

DB 24.76

The following 46 materials have been added:

Weather Data

315 new weather files with hygrothermally critical years for the U.S. and Canada have been registered in the database (three files for each of 59 previously registered and for 46 new locations). The weather files themselves are not included with WUFI; if you need them, just download them separately and copy them into WUFI’s Climate folder.