Mechanical Vapor Recompression (MVR) is a energy-saving low-temperature evaporative concentration technology, which uses low-value waste steam and heat, designed on the theoretical basis of Boyle’s law which means that during compression as the volume of gas decreases, the pressure and the temperature increase thereby making available the energy for reuse According to this principle, the energy normally lost in the compression is recovered, the latent heat of steam is recycled and fresh steam consumption is avoided leading to a highly energy saving evapora tion process.