Inside the MyDATEC thermodynamic unit, the first air flow (Extraction -> External discharge) passes through an “evaporator” heat exchanger battery. The air flow transfers the heat contained in the air to the heat transfer fluid of the thermodynamic cycle. The air flow of a temperature of approximately 20°C at the extraction is rejected, after having given up its calories, towards the outside at a temperature of approximately 2°C.
At the same time, the second air flow (Fresh air outside -> Insufflation in the dwelling) crosses a second exchanger battery “Condenser”. The air flow recovers the heat from the heat transfer fluid of the thermodynamic cycle. The temperature increase between the new air, taken from outside the dwelling, and the air blown into the dwelling is about 35°C. This means that for an outside air temperature of 0°C, the insufflation in the dwelling is about 35°C.
- The two air flows are very distinct and there is no mixing between the two air flows, which ensures the perfect renewal of the fresh air in the dwelling.
The use of a heat pump system, with a thermodynamic cycle, allows, contrary to the static double flow system (with static exchanger) to heat the incoming air to a temperature higher than the temperature of the extracted air (20°C) of the dwelling allowing to ensure, according to the losses of the dwelling, all or part of the heating need
Unlike other systems, MyDATEC uses the air extracted from the home for ventilation purposes. This source of energy is renewable, since if it were not reused, it would be lost, and above all, this source is naturally warm (about 20°C all year round) and rich in moisture! Everything a heat pump loves! That’s why MyDATEC’s returns are so spectacular. On the other hand, the source used by MyDATEC, the extracted air from the ventilation system, is limited: heat recovery from the extracted air is of no interest if there is no need to ventilate! This is why the power supplied by MyDATEC is limited (up to 3 kW for the heat pump) whereas an air-to-air heat pump could provide unlimited power.