ReVaD: Adaptive vacuum insulation for energy-efficient buildings of the future

As part of an expert discussion with Stylepark AG Texpertise, our colleagues Jonina Felbinger and Leon Pauly provided current insights into the ReVaD research project. The aim of the project is to develop adaptive, vacuum-based insulation systems for future building applications.

From static insulating material to active component

ReVaD is pursuing a fundamental paradigm shift: insulation should no longer be a static component, but should be actively controlled as required. At the heart of the technology are reversible thermochemical reaction systems with which the internal pressure of vacuum insulation panels can be specifically regulated. This allows the insulation elements to switch between a state with very high thermal insulation ("OFF") and a state with controlled heat transfer ("ON").

This adaptive behaviour opens up new possibilities for energy-efficient building operation. As façade elements, the systems provide effective summer thermal insulation during the day and enable targeted heat dissipation at night to reduce cooling energy requirements. The technology also supports the thermal activation of building structures (TABS): solid building components can be used as thermal energy stores close to the room.

Targeted utilisation of thermal masses as energy storage

Targeted control of the heat flow using adaptive insulation allows these thermal masses to be charged and discharged in a controlled manner. At the same time, higher storage temperatures can be realised as the heat release into the room can be actively controlled. In this way, existing building structures can serve as effective thermal energy storage systems - an important step towards flexible, electrified energy systems in the building sector, even in existing buildings.

ReVaD is thus making an important contribution to the development of flexible and electrified energy systems in the building sector - particularly with regard to energy-efficient refurbishment and existing buildings.