Combination of recuperator with exhaust air intake unit for use in mechanical ventilation systems

Introduction. One of the most common ways to save heat energy and money is the use of recuperator units in mechanical ventilation systems. In this article, we will talk about the modernized air recuperator. In the process the design feature, layout and operation algorithm of this heat exchanger device will be demonstrated. In order to increase the choice of type and designs of air heat exchangers, designers will be offered and described the variant of designed combined recuperator with an exhaust air intake device from the room, which in the process will be one of the versions of the device increasing the efficiency factor in mechanical ventilation systems. The recuperator is an indispensable element for modern unique buildings and structures.Materials and methods. The recuperator is proposed as an analogue of existing ones and belongs to the field of energy saving in mechanical ventilation systems.Results. The efficiency increase in comparison with analogues is carried out due to: the use of the recuperator as a combined exhaust air intake unit from the room, an increase in the area of contact of heat carriers, a special internal structure capable of more uniform heat transfer, an atypical arrangement of the recuperator installation to avoid freezing and "defrosting" of condensate at the heat transfer surface. The heating flow of the supply air through the combined recuperator with the exhaust air intake device from the room in the mechanical ventilation system is regulated by automation to maintain a more comfortable supply temperature in the room.Conclusions. The new design acquires an increased efficiency compared to its analogues.

recuperator, exhaust air intake device, air heat exchanger, heat transfer, mechanical ventilation system