Warer/ground source heat pump is device for making heat/cold air or heat/cold water. Geothermal heat pump's heat/cold source come from water of buried pipe, well, lake, river,sea, sanitary sewage, industrial sewage etc. Note：Water can be salt water, Ethylene glycol aqueous solution.
Geothermal heat pump classification
Cold/heat air unit:
heat exchanging devices at user side are coiled pipes with air suppling and adjusting system;
Heat/cold water unit：
heat exchanging devices at user side are heat exchanger of water-refrigeration.
Water loop unit：
using water in public pipe as heat/cold source.
Underground water unit：
using underground water as heat/cold source.
Buried pipe unit：
Using water circularly flow in the buried pipe as heat/cold source.
Surface water unit：
using water in lake, river, sea, sanity sewage, industrial waste water.
Excample of coaxial heat exchanger for geothermal heat pump
Model List of Heat Exchanger for Geothermal Heat Pump