The article deals with the improvement of the food and pharmaceutical industry heat exchange equipment. Moreover, the article shows a problem of relevance of evaporation improvement in the technology of biologically active additives (BAA) from wild-growing vegetable. The possible usage of the electrochemical generator on oxyhydrogen cell for power supply is highlighted. It presents the results of experiments on the device with infrared heating of liquid through a free surface with the vortex for mated from the impeller rotation. The relations between size and form of vortex and a heating rate are shown. The flow sheet containing the generator on oxyhydrogen cell as thermal and electric energy resource for evaporation has been suggested. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.