VarioVAP
VarioVAP
How it works
At the heart of the VarioVAP system is a plate falling-film evaporator that serves as the central heat exchanger. Each heat source – typically individual vapor streams – is introduced into separate bundles designed as lamella heat exchangers within the evaporator.
The thermal energy is recovered, converted into steam, and compressed to the desired pressure level by compressors.
Advantages
- Centralized waste heat utilization with one system integrating multiple heat sources
- Lower resource consumption with reduced demand for fossil energy and cooling water
- Reduced CO₂ footprint Maximum energy efficiency through the use of previously unused waste heat
- High operational flexibility with scalable and reliable system design
- Compact design enabling easy retrofit and low maintenance
System configuration
The system can operate either as a stand-alone heat exchanger or in combination with an open heat pump system based on mechanical vapor recompression (MVR).
In this configuration, the generated steam is compressed to a higher energy level and can be supplied as high-quality steam to production processes or external energy networks as required.
Applications
The VarioVAP system is ideally suited for environments with multiple waste heat streams:
- Industrial plants: Especially effective for sectors involving thermal separation processes such as distillation, evaporation or drying – for example the chemical, food, pulp, paper or building materials industries.
- Industrial parks: Joint utilization of diverse waste heat streams from various facilities – either for reintegration into internal processes or for feeding into district heating networks.
How we support you
- Design and engineering of customized systems
- Engineering, manufacturing, procurement and delivery
- Integration into existing processes
- Optional: Flash tank systems for liquid media
- Installation, commissioning, maintenance and after-sales service
Our latest milestone
GKT wins the Lower Austria Innovation Award 2026 with VarioVAP
GKT has been awarded the Lower Austria Innovation Award 2026 for its waste heat recovery technology, VarioVAP. The award ceremony took place on June 9, 2026, at the House of Digitalization in Tulln. The Lower Austria Innovation Award is one of the region’s most prestigious innovation recognitions, honoring market-ready solutions with sustainable industrial impact.
