In the mechanical vapor recompression, the vapors are compressed by an electrically operated compressor and used again to heat the evaporator. Depending on the application (boiling point increase, heat transfer,...), one- or multiple-stage turbo-compressors are working based on an open heat pump principle.

Here, the process steam (vapor) arising in the industrial processes is lifted to a higher temperature and thus higher energy level with a centrifugal fan and then returned to the process as heating steam. The energy contained in the steam is not lost, only the energy required to increase the temperature must be additionally applied.

Since the dramatic increase in energy costs in recent decades, efforts have been made to reduce the consumption of fossil fuels and CO2 emissions, as well as to reduce the high levels of steam consumption for these processes to date. With mechanical vapor recompression, these efforts can be achieved because it is a cost effective and reliable process for evaporation, distillation, crystallization and drying.