Gloggnitz, Austria, 01.09.2025
GIG Karasek continues to strengthen its focus on environmental technologies: following the successful launch of the single-source solution CompriVAP in 2024, the company is now following that up with VarioVAP – a holistic multi-source solution for industrial waste heat recovery. For the first time, the concept of “Zero Waste Heat” – maximizing the use of waste heat across the board – can be put into practice.
VarioVAP – multi-source technology for maximum waste heat utilization
With VarioVAP, a wide variety of waste heat streams can be centrally consolidated and converted into valuable fresh steam – even those previously considered uneconomical. Regarding this new system, differences in temperature, pressure, or energy levels do not present as obstacles. This breakthrough enables the full integration of diverse heat sources, unlocking the maximum potential of industrial waste heat utilization.
The heart of the VarioVAP system consists of a plate falling-film evaporator, serving as a highly efficient heat exchanger. Each source – whether steam or liquid – is fed in separately, processed, and converted into a joint stream of fresh steam that can then be flexibly used for production processes or external applications.
The plate falling-film evaporator can operate either as a standalone heat exchanger or in combination with Mechanical Vapor Recompression (MVR). In the latter configuration, the generated fresh steam is additionally raised to a higher energy level.
“VarioVAP proves, that Zero Waste Heat can become reality. With our multi-source solution we are able to reduce the demand of fossil fuels and cooling water – and at the same time sustainably decrease CO2 emissions.”
Andreas Schnitzhofer
Managing Director at GIG Karasek
“VarioVAP consolidates waste heat – either within single production plants or collectively within industrial parks, where even small companies can now merge their energy potentials.”
Luis Pereira
Process Engineer and Developer of VarioVAP
CompriVAP – a specialized solution for single heat streams
In 2024, GIG Karasek launched CompriVAP, its first solution for industrial waste heat recovery. Based on Mechanical Vapor Recompression (MVR), the technology is particularly well-suited for handling individual waste heat streams.
A prime example is its deployment at BASF SE, where CompriVAP is currently being implemented as the world’s most powerful industrial heat pump system for carbon-free steam generation at the Ludwigshafen site in Germany.
While CompriVAP focuses on utilizing single sources, VarioVAP takes this approach to the next level with a multi-source technology – paving the way toward a zero-waste heat future.
Want to learn more? Contact us:
presse.gigkarasek@gigkarasek.at
Sample layout of a VarioVAP multi-source solution © GIG Karasek