Buildings
Protection of heat pumps
In water / water geothermal heat pumps on well-water, exchangers are subject to clogging when water contains suspended solids. These suspended solids gradually clog the exchanger and reduce its efficiency; disassembly and cleaning are then necessary. To reduce maintenance, a good filtration is necessary.
Most commonly, 80 to 200 micron filtration is sufficient to protect the plates.
For some boreholes containing a large quantity of fine clays, a much finer filtration (6 microns) slows down the formation of deposits on the plates.
Suitable equipment
AS AUTOMATIC FILTERS
Filtration efficiency
Filtration degree from 6 microns
Maintenance
Fully automatic
HN HYDROCYCLONES
Filtration efficiency
Remove most of coarse sand.
Maintenance
To be purged periodically
References
ES energy services / Ikea Strasbourg (France).
Protection of the store’s heat pump heat exchanger using borehole water. AS 300 DN150 200 μm filter.
SPIE Building Solutions / Municipality of Sandillon (France).
New cultural hall. Protection of the heat pump heat exchanger with a AS200 2’’ 100 μm filter. Borehole flow rate: 11 m³/h.
Regmatherm / Community hall and daycare, Baldenheim (France).
Groundwater heat pump. Borehole with 17 m³/h pump. Protection of the heat exchangers with a AS200 2’’ 100 μm filter. Plate exchanger heat pump, power 60 kW.
EIMI / Ikea, Nice (06).
Aquathermie on groundwater for the store’s air conditioning. To protect the exchangers, two AS300 DN100, 100 μm filters were installed. Insulation was added by the installer.
Axima Equens / Bonnat-Helleu Museum, Bayonne (France).
As part of the museum’s renovation and expansion project, installation of groundwater heat pumps. Protection by a Hectron AS300 316L DN150 (60 μm) filter.
