Abstract
Various factors affect the processes that take place in the devices. Knowledge of these factors is important, especially for technical practice. If these were omitted in the design of the device, the expected changes in the properties of the substances would probably not occur in the device. Different processes occur in the devices, often involving simultaneous heat and mass transfer through the interfacial area. In this case, it is true that the description of the heat transfer cannot be based on ordinary laws. It is necessary to proceed from their corrected forms because, generally, the mass transfer influences the heat transfer. This impact can be taken into account using the correction factor adjusting the commonly reported relationships, as mentioned in this article.