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| Content Provider | IET Digital Library |
|---|---|
| Author | Sant, Tonio Buhagiar, Daniel Farrugia, Robert N. |
| Abstract | The use of hydraulic power transmission to transport offshore wind energy from deep offshore sites to shore may present a more feasible option for integrating wind farms with land-based hydro-energy storage systems. Yet the incurred losses resulting from fluid friction are significantly larger than those encountered in electrical power cables. This study investigates the possibility of compensating for such losses by exploiting cold deep-seawater (DSW) from below thermoclines. A numerical study simulating a single large-scale offshore wind turbine-driven pump supplying DSW to shore across a pipeline in the Central Mediterranean is presented. Seawater leaving the grid-connected hydroelectric power plant is allowed to flow through a centralised district air-conditioning unit operating on a vapour compression cycle. Any shortfall in DSW supply due to lack of wind is compensated for by sea surface water to maintain a constant flow rate. The analysis is repeated for seawater pipelines having different sizes. It is shown that the deep seawater supply from the offshore wind turbine, though being intermittent, reduces the energy consumption of the air-conditioning system considerably. The resulting savings are found to compensate for a significant proportion of the losses encountered in the hydraulic transmission pipeline. |
| Starting Page | 1488 |
| Ending Page | 1497 |
| Page Count | 10 |
| ISSN | 17521416 |
| Volume Number | 10 |
| e-ISSN | 17521424 |
| Issue Number | Issue 10, Nov (2016) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rpg/10/10 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2016.0040 |
| Journal | IET Renewable Power Generation |
| Publisher Date | 2016-05-11 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Air Conditioning Centralised District Air-conditioning Unit Constant Flow Rate Deep Seawater Thermal Potential DSW Electrical Power Cables Energy Consumption Energy Storage Fluid Friction Grid-connected Hydroelectric Power Plant Hydroelectric Power Stations And Plant Land-based Hydro-energy Storage System Loss Compensation Numerical Analysis Numerical Method Offshore Hydraulic Wind Power Transmission PipeLine Offshore Installations Offshore Wind Energy PipeLine Power Grid Pumps Sea Surface Water Seawater Seawater PipeLine Single Large-scale Offshore Wind Turbine-driven Pump ThermocLine Vapour Compression Cycle Wind Farm Wind Power Plant Wind Turbine |
| Content Type | Text |
| Resource Type | Article |
| Subject | Renewable Energy, Sustainability and the Environment |
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