FlagshipONE, a factory currently under construction in Örnsköldsvik, is set to produce E-methanol through hydrogen electrolysis and CO$_2$ capture from the Hörneborg combined heating and power plant owned by Övik Energi. Övik Energi's role in cooling the factory is crucial, given the significant 70+ MW of electricity that FlagshipONE will consume. This report, requested by Övik Energi, delves into the potential uses of the factory's excess heat, a substantial portion of which is currently slated to be cooled into the ocean. The data regarding the excess heat flows were acquired through a meeting with representatives from Ørsted, the owner of the FlagshipONE factory. The two main flows consist of a flow in the 27-33 °C temperature range and a warmer flow in the 90+ °C temperature range. The colder flow has an output of 35-45 MW , and the warmer one has an output of 9-12 MW. The report is based on interviews with a diverse range of companies that utilize excess heat in various ways. These include electricity producers like Climeon, greenhouse operators such as WA3RM and Agtira, greenhouse constructor Kubo, aquaculture developer Big Akwa, aquaponic developer Johannas Odlingar, as well as business development companies High Coast Invest and the research facility RISE Processum, the Örnsköldsvik Municipality, among others. Their insights formed the foundation for the project's site selection, heating needs estimation, and more. The three main methods investigated were heated greenhouses, district heating by heat pumps, and electricity production from the warmer excess heat flow. The heated greenhouse idea had several problems. The low temperature of the excess heat means that it most likely has to be primed by heat pumps to have a usable temperature, and there is also a lack of fitting plots of land near the factory location, which means high investment costs because of the pipe laying. One plot directly near the factory, Örnsköldsvik 11:6, was identified as a possible location, with calculated heating costs of 0.37 SEK/kWh, significantly cheaper than district heating. The development of this plot is an option for future work in the area. For district heating by heat pumps, costs were calculated to be around 0.5 SEK/kWh of heat when utilization is 2000 h per year, which decreases to 0.36 SEK/kWh when utilization is increased to 6000 h per year. These heat pumps would supply 1.3-2.3 MW of heating, which could easily be expanded. This price is getting close to where it would be an attractive option for Övik Energi to supply to their network. The electricity production through the Climeon units would be able to produce 500-600 kW of electricity. This method would also leave a source of several megawatts of heat available from about a temperature fit for utilization, which could be used for priming the temperature of the colder heat source, prewarming the district heating return line, or for other uses.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:umu-225685 |
| Date | January 2024 |
| Creators | Lindberg, Axel |
| Publisher | Umeå universitet, Institutionen för tillämpad fysik och elektronik |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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