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Subsea Cooler for Offshore Wind HVDC transformer platforms

Periodic Reporting for period 1 - COOLWIND (Subsea Cooler for Offshore Wind HVDC transformer platforms)

Reporting period: 2019-10-01 to 2020-09-30

The project goal is to commercialize the prototype FSCC® subsea cooler developed by Future Technology for use in subsea cooling of offshore wind converter platforms (HVDC). By installing a cooler unit in full operation, the TRL level of the technology can be raised from 6 to 9. This will be achieved through installation of a pilot cooling unit on a live platform. This unit will be set in operation in parallel with a conventional cooling system, allowing full-scale testing and verification over the project duration and beyond. Successful operation of the pilot unit will allow implementation in full scale and an opportunity to replace the sea water pump-based systems.
There is large interest in the market for the technology as the subsea cooling offers several benefits compared to the conventional system. As it is a closed loop system, there is no need for chlorination of large volumes of seawater that is dumped into the ocean after passing through the heat exchangers. At the same time, the sea water pumps and accompanying filters can be avoided, leading to reduced maintenance and a significant reduction in power consumption for the cooling system. This is both reducing the OPEX for the operator and reducing CO2 emissions.
During the period, an agreement with a major operator has been made to install a FSCC on a HVDC which is currently in the engineering and contruction phase. This enures that the technology will tested in a live operating environment. During the period, the design of the FSCC cooler has also been updated and matured to increase the robustness and manufacturability of the FSCC further.
During the project a full scale FSCC subsea cooler will be built and tested, and be ready for installation on a HVDC platform, enabling full scale testing of this technology. This will raise the Technology Readiness Level (TRL) level of the product to TRL9, which will allow full scale implementation of the technology for future HVDC platforms.
Illustration of a FSCC pilot unit on a typical HVDC platform