22 May 2008
Due to the possibility of optimisation of the horizontal brine collector, a special
compact collector for the brine to water heat pumps was developed. Field tests and
simulation regarding the efficiency and the energy gain have been made over 2 years. The
results of the field measurement and the simulation show a high efficiency of this system.
The compact collector is an area saving way of reducing the digging work for the brine
collector and reduces the needed area for the collector in comparison to a standard
horizontal collector. Both simulation and measurements prove that there is enough capacity
to recover the brine source in summer. The minimum temperatures that occur at the end of
the heating period do not pass the -2.5 °C.