PASSYS test cells
The Unit of Energy Efficient Building has two PASSYS cells for the stationary and dynamic measurement of façades. These cells can be completely balanced in terms of energy and thus a wide range of findings can be obtained about façades.
Façade elements measuring 2.75 / 2.75 metres can be tested with regard to the U-value and g-value. In addition, one cell has complete measuring equipment for daylight and artificial light measurements. The second cell has been optimised for thermal measurements. This means that we can also measure active and passive components integrated into the façade (such as heat pumps and ventilation units). A so-called cold box is also available, which can be used to simulate the outdoor climate in front of the façade (temperatures down to -15°C).
The laboratory is fully connected to Hardware in the Loop (HiL). With Hardware in the Loop, solutions such as heat pumps are operated in the laboratory and linked to a computer simulation in real time. This allows, for example, the complete behaviour of the building to be simulated on the PC, while only part of the façade is installed in the PASSYS cell in real operation. Hardware in the Loop offers a wide range of possibilities. For example, dynamic tests can be carried out and the development and testing of control systems can be advanced.
Hard facts
Two cells that can be used independently of each other
Frame elements with a size of 2.75/2.75 metres
Measurement of façade-integrated active and passive elements (ventilation, heat pumps, etc.)
U-value measurement
g-value measurement
Daylight measurement
Conditioned outdoor temperature down to -15° possible
Full hardware-in-the-loop compatibility
Fulfils the highest accuracy requirements by using thermocouples and Pt100 temperature sensors with accuracies of < 0.05 K
Information as download (English only)
