Water fall pump based on hydrostatic pressure.
A hydram (hydraulic ram pumps) is an automatic pumping device which utilises a small fall of water to lift a fraction of the supply flow to a much greater height.
The housing company Karlskronahem has eliminated oil from its heating systems by installing a number of different types of heat-pumps in innovative ways. One installation involves the installation of air-to-water heat pumps in the attic of apartment buildings that supply heat down to an external temperature of five degrees. The air in the ventilation is recycled through the system for heat recovery. The company has also installed solar panels for electricity production in order to become more self sufficient in terms of energy.