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Geothermal Pumping System in Agriport A7, Netherlands – Sustainable Heating Solution for Greenhouse Horticulture with Foras HPR-serie

Location: Netherland

Year: 2018

Application: Greenhouse Geothermal plant in the Agriport A7 hub

Agriport A7 hub with Foras

At the heart of the Netherlands’ Agriport A7 hub, Foras is playing a key role in delivering reliable, sustainable geothermal energy to one of Europe’s largest greenhouse complexes. Our horizontal multistage pumps help power the geothermal heating system that keeps over 300 hectares of greenhouses operating efficiently, reducing CO₂ emissions and supporting sustainable agriculture.


The Challenge

Agriport A7 is a pioneering site in Middenmeer-Andijk dedicated to large-scale greenhouse horticulture. With over 750 hectares planned for development and 300 hectares already in use—200 hectares for tomatoes and 100 hectares for peppers—maintaining consistent, eco-friendly heating is essential. ECW Energy, the geothermal operator of the site, required a powerful and corrosion-resistant pumping system to re-inject cooled brine water back into the earth at depths of over 2,000 meters. The challenge was intensified by the water's high salinity, gas content, and temperature—92°C at extraction.


Each production plants consists of 2 sources (wells). One well for pumping hot water and one well for injecting the cooled water. All this water comes from the ECW geocentric plant, where it gives off its heat to the water from the heat network, which goes to the customers.
Each production plants consists of 2 sources (wells). One well for pumping hot water and one well for injecting the cooled water. All this water comes from the ECW geocentric plant, where it gives off its heat to the water from the heat network, which goes to the customers.


Our Solution: Horizontal Multistage model HPR 125.6/8- Duplex-800kw-2p


Foras supplied its Horizontal Multistage Pump model HPR 125.6/8R – Duplex, engineered to meet the demanding requirements of geothermal applications. Designed specifically for aggressive geothermal fluids, this pump solution ensures long-term operational reliability.

Pump Features:

  • Model: HPR 125.6/8R-Duplex-710kW

  • Flow rate: 350 m³/h

  • Discharge pressure: 550 m

  • Speed: 2400 rpm

  • Pump power: 655 kW absorbed

  • Construction material: All wet parts made from Duplex stainless steel EN X2CrNiMoN2253 / ASTM S31803

  • Seal: Balanced Mechanical Seal SIC/SIC/Viton

  • Bearings: Oil-lubricated with thrust housing air-cooling

  • Motor: ABB 800 kW, 2950 rpm, 6000V, B3 execution, inverter-driven (1000kW ABB inverter)



    Sectional view of the Pump model HPR 125.6/8R-Duplex-710kw
    Sectional view of the Pump model HPR 125.6/8R-Duplex-710kw



These pumps are used to re-inject brine after heat transfer, ensuring optimal system efficiency while resisting the corrosive and abrasive nature of geothermal water.



Results

With the installation of Foras geothermal re-injection pumps, the Agriport A7 greenhouse complex benefits from:

  • 70MW of sustainable geothermal heating capacity

  • Major reduction in CO₂ emissions by displacing fossil fuel consumption

  • Long-term system durability in a chemically aggressive environment

ECW now operates three geothermal production plants, each with a dual-well configuration, supplying clean heat to greenhouse operators. This setup supports approximately 20% of the Netherlands’ total tomato production.

In the pumping room there are 4 pumps feeding the eating exchangers and 2 pumps re-injecting the water in the wells. Due to the chemical composition of the water all the pumps parts are made of Duplex stainless Steel.
In the pumping room there are 4 pumps feeding the eating exchangers and 2 pumps re-injecting the water in the wells. Due to the chemical composition of the water all the pumps parts are made of Duplex stainless Steel.


Looking to implement sustainable and efficient geothermal energy solutions for industrial or agricultural use? Contact Foras today to learn more about our customized pumping systems and innovative engineering for geothermal and renewable energy applications.

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