Closed translucent façade elements with switchable U-value-A novel option for energy management via the facade

- Switchable U-value as a way to cool buildings in summer when the outdoor temperature is lower than the indoor temperature.
- Controlling the convection within closed elements as a new way of realizing a switchable U-value.
- Experimental validation of the concept and parameter variation.
- Simulation of the new element using TRNSYS show interesting potential.