Intelligently ventilated

Efficiently controlled room air and cooling with multiple benefits

Regular air exchange in closed rooms is an important factor for people ‘s well-being and health as well as for the building itself. If there is too little ventilation, the CO2 content and the humidity in the room air increase and the oxygen content decreases. As a result, occupants may experience fatigue more quickly. There is also a risk that an increased amount of humidity can cause mold.

The required air exchange can be carried out manually by opening windows and doors or automatically by a ventilation system. The Heating-Ventilation-Air Conditioning systems (HVAC) at the Environmental Campus supply, among others, the lecture rooms with fresh air and passively cool room temperatures during summer. In addition, the CO2 concentration is controlled and reduced if necessary. Only zero-emission technologies are used for all these
processes.

Air intake
The outside air is drawn into the system via intake towers. As long as the air temperature is too cool or too warm, the intake is carried out via the three metal intake towers. Then the air flows directly through the geothermal heat exchangers and thus is either heated or cooled. If the outside temperature alreadycorresponds to the desired temperature for the rooms, the air is drawn in via the bypass tower.
HVAC system with integrated heat recovery as well as reheater and recooler.
Use exhaust air
The waste air (exhaust air) from the building is finally discharged and passed through the HVAC system. Here, heat recovery takes place, and thereby the waste air is, in turn, used to heat or cool the fresh air from outside. The exhaust air is then fed into the blow-out tower.
Heat cycle
Further heat recovery takes place in the blow-out tower: the residual heat from the air flow is extracted by a liquid circuit. The liquid is heated further via the heat pump and flows through a ground-coupled heat exchanger located above the concrete pipes. After releasing the heat to the ground, the liquid flows back through the pipes again and the process starts anew. In summer, the cycle can also be reversed and the ground cooled.

Tips and measures

Ventilation systems can also be installed in detached houses.

Regular ventilation ensures better well-being and concentration.

Wide opening the windows for a short period of time is more energy-efficient than tilting the window for a longer period.

Heating-Ventilation-Air Conditioning systems

  • supply the rooms with fresh air and thus increase well-being.
  • control the CO2 concentration.
  • pre-regulate the air temperature.
  • reduce heat losses that occur through manual ventilation.

Dates and facts

Geothermal heat exchanger length:
55 m
Geothermal heat exchanger diaeter:
1,5 m
Summer earth temperature:
12-14 °C
Winter earth temperature:
8-10 °C
Geothermal heat exchanger total air volume:
25.000 m3/h

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