Applications

ATES systems

Since the very initial start (early nineties) of the first Aquifer Thermal Energy Storage projects (ATES) in both the Netherlands and Belgium, Melotte already supplied the required submersible pumps. ATES projects help to decrease the CO2 discharge and make us less dependent of oil and gas suppliers. Since 2001 on such ATES projects the submersible pumps are often completed with the MPT injection valves which are also designed and “in house” produced by Melotte in Maastricht. An ATES system generally consists out of a combination of 2 wells with in each well a Melotte submersible pump unit, preferably completed with MPT injection valves to maintain the pressure in the whole piping system in a reliable way. During the one season (for instance in the winter), the water is distracted from the “hot” well and pumped through the above ground fittings including an heat exchanger; after that the water cooled down in the heat exchanger from the building side circuit is injected again in the other “cold” well and stored there. The heat released during this process usually is upgraded via an additional heat pump and used to heat the relevant building. During the summer season this colder water is pumped from the “cold” well and guided through the same system back to the “warm” well, during which the water is heated from the secondary system in the heat exchanger. This is then used to provide the building with the required cooling. More and more the Melotte submersible pump units completed with MPT injection valves are exported to other countries and continents.
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