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Six heat exchangers for geothermal project

Some time ago a cooperative of a number of horticultural companies in the Netherlands decided to work together in the field of heat transfer. Their greenhouses together cover some 51 hectares, with various crops. The huge amount of gas that the growers used for heating was the main reason to continue looking for a more sustainable and future-proof solution.

According to research from 2010, the location turned out to be extremely suitable for geothermal heating. The plans became concrete when the growers realised that they could achieve a major impact together. The project got off the ground. Kapp was commissioned with the Heat Transfer Engineering and the supply of the heat exchangers.

One of the challenges was the narrow delta T. It all starts with the search for an optimal break-even point without knowing the exact figures and data. For this specific project, Kapp supplied three Kelvion NX150 units (3400 kW per heat exchanger) and two Kelvion NX150 units (3.000 kW per heat exchanger).

To date, the installation has managed to generate around 10 MW, but in the near future it will be further increased to around 16 MW. This can result in a saving of 22 million m3 of gas, resulting in a reduction of 40 million kg CO2 and 72,000 kg NOx on an annual basis. The ultimate goal is to scale up to 20 MW.

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