24 June 2014

FROM COMPONENTS TO SYSTEM APPROACH OPTIMIZATION OF AIR-WATER HEAT PUMPS


Air-water heat pumps are currently the most frequently used heat pumps in
Europe. This is due to the easy connection of the heat pump to its heat source “ambient air”.
Complex drill holes or collector systems are not necessary. However, adverse effects are low efficiency and higher noise levels. The presentation shows how the air flow within a heat pump can be optimized. The objective
is to transport ambient air to the evaporator with as low energy demand as possible. This will be achieved by using air direction elements such as guide vanes or diffuser, which convert
dynamic pressures into static pressures. These air direction elements have, however, one important disadvantage: They need space which is normally not given in heat pumps.
The new construction ZAplus will be demonstrated. It combines all the advantages with minimal needed space. The development of ZAplus is based on extensive CFD-calculations.
For optimal implementation of the geometry, high-performance composite material is used. On the basis of different comparative measurements, impressive advantages in the field of
efficiency and acoustics in comparison to conventional solutions will be shown.