The article proposes a new device for radiation-convective heating of working fluids, which can be used in particular for emergency and repair and construction works for heating of frozen soil, concrete, road surface and other building materials. The studies were carried out as part of implementation of the Innovation Assistance Fund for Energy Sector Enterprises.

The article considers modeling of modern heat exchange systems which use thermal energy for its beneficial use. The proposed mathematical model makes it possible to investigate systems with utilization of thermal energy. The article presents the results of simulation of heat exchange processes using heat energy recovery for internal combustion engines.