Write your message
Volume 14, Issue 28 (1-2019)                   Marine Engineering 2019, 14(28): 1-9 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Alamian R, Shafaghat R, Ghasemi M. Experimental evaluation of attenuator WEC in a laboratory wave tank. Marine Engineering 2019; 14 (28) :1-9
URL: http://marine-eng.ir/article-1-681-en.html
Experimental evaluation of attenuator WEC in a laboratory wave tank
Rezvan Alamian1 , Rouzbeh Shafaghat * 1, Milad Ghasemi1
1- Sea-Based Energy Research Group, Babol Noshirvani University of Technology
Abstract:   (4979 Views)
The marine and ocean energies are part of renewable energy that Wave energy converters (WECs) are used to extract them. Experimental modeling will be useful in evaluating their performance. In this research, the experimental model of an attenuator WEC is built in the Sea-Based Energy Research Group of the Babol Noshirvani University of Technology, and its performance is studied and evaluated in the wave tank of the university by applying the sea waves conditions. In this evaluation, the effects of wave amplitude and wave period on the average and maximum net power of the Wavestar system are investigated. According to the results, it was observed that in larger wave amplitudes (13 to 15), at 35 and 25 rpm, the maximum net power was close to each other and was 36.7 (Watts) and 31(Watts), respectively. Due to the irregular wave and possible damage to the system at 35 rpm, the wave amplitude of 15 and the speed of 25 rpm are chosen as the optimal mode for better performance of the system.
Keywords: Wavestar WEC, Experimental modeling, Wave tank, Wave amplitude, Average and maximum power
Full-Text [PDF 1036 kb]   (1842 Downloads)    
Type of Study: Research Paper | Subject: Marine Structures and near shore
Received: 2018/08/14 | Accepted: 2018/10/16
References
1. Falnes, J., (2007), a review of wave-energy extraction, Mar. Struct. 20 185-201. [DOI:10.1016/j.marstruc.2007.09.001]
2. Drew B., Plummer A.R., Sahinkaya M., (2009), a review of wave energy converter technology, Proc. Inst. Mech. Eng. Part A: J. Power Energy 223 887-902. [DOI:10.1243/09576509JPE782]
3. Falcao, A.F. de O., (2010), Wave energy utilization: a review of the technologies, Renew. Sustain. Energy Rev.14 899-918. [DOI:10.1016/j.rser.2009.11.003]
4. Lopez, I., Andreu J., Ceballos S., Martinez de Alegria I. and Kortabarria I., (2013), Review of wave energy technologies and the necessary power-equipment, Renew. Sust. Energy Rev. 27 413-434. [DOI:10.1016/j.rser.2013.07.009]
5. "Electric Power from Ocean Waves," Wavemill Energy Corp., http://www.wavemill.com, (current 1 Dec. 2005).
6. kolestani. A., (2015), BSc thesis, "Numerical investigation of the geometry parameters on oscillating water column at different wave steepness", Shiraz University (In Persian).
7. www.wavestarenergy.com
8. Svendsen, R. and Frigaard, P., (2001). Indledende hydrauliske undersøgelser af bølgeenergianlægget Tusindben. Aalborg Universitet, Laboratoriet for Hydraulik og Havnebygning.
9. Frigaard, P. B., Andersen, T. L., Kofoed, J. P., Kramer, M. M. and Ambühl, S., (2016). Wavestar Energy Production Outlook. Aalborg: Department of Civil Engineering, Aalborg University. DCE Technical Reports, No. 201.
10. Frigaard, P. and Andersen, T.L., (2009). Effektmålinger på Wave Star i Nissum Bredning. Aalborg Universitet, Department of Civil Engineering, ISSN 1901-726X, DCE Technical Report No. 61.
11. Jakobsen, M.M., Kramer, M., Holk, N., Pedersen, M. and Vidal, E., (2013). MARINET Infrastructure Access Report, User-Project: AAUWS, Wave-Structure interactions on point absorber. Marine Renewables Infrastructure Network, MARINET, last visited January 14th 2016.
12. Jakobsen, M.M., Beatty, S., Kramer, M. and Iglesias, G. (2016). MARINET Characterization of loads on a hemispherical point absorber wave energy converter. International Journal of Marine Energy. IJOME-D-15-00017R1. [DOI:10.1016/j.ijome.2016.01.003]
13. Jakobsen, M.M., (2015). Wave-Structure Interactions on Point Absorbers – an experimental study. Ph.D. Dissertation from Aalborg University, Department of Civil Engineering.
14. Kramer, M.M., Marquis, L., and Frigaard, P. (2011). Performance Evaluation of the Wavestar Prototype. EWTEC European Wave and Tidal Energy Conference.
15. Vidal, E., Hansen, R.H. and Kramer, M.M. (2012). Early Performance Assessment of the Electrical Output of Wavestar's prototype. International Conference on Ocean Energy ICOE.
16. Wave Star A/S (2013). Wavestar prototype at Roshage - Performance data for ForskVE project no 2009‐1‐10305 phase 1 & 2. Project report for EnergiNet.dk ForskVE project no. 2009‐1‐10305.
17. Marquis, L. (2014). Wavestar- 4 years of continuous operation in the North Sea. International Conference on Ocean Energy ICOE.
18. Hansen, R.H. (2013). Design and Control of the Power Take-Off System for a Wave Energy Converter with Multiple Absorbers. PhD-thesis from Department of Energy Technology, Aalborg University. Last visited January 14th 2016.
19. Hansen, A.H. (2014). Investigation and Optimization of a Discrete Fluid Power PTO-system for Wave Energy Converters. ISBN 978-87-92846-44-0, PhD-thesis from Department of Energy Technology, Aalborg University. Last visited January 14th 2016.
20. Nambiar, A., Forehand, D., Kramer, M., Hansen, R., Ingram, D. (2014). Effects of hydrodynamic interactions and control within a point absorber array on electrical output. International Journal of Marine Energy 9.
21. Kramer, M., Brorsen, M. and Frigaard, P. (2004). Wave Star - Indledende undersøgelse af flydergeometri. Hydraulics and Coastal Engineering No. 4, Aalborg University, Department of Civil Engineering, ISSN: 1603-9874, in Danish. Last visited January 22th 2016.
22. Kramer, M. and Andersen, T.L (2005). Wave Star – Skala 1:40 modelforsøg, forsøgsrapport 2. Hydraulics and Coastal Engineering No. 14. ISSN: 1603-9874. Aalborg University, Department of Civil Engineering, in Danish.
23. Alamian R., Shafaghat R., M. Khazaee A. and Yousefi A., (2017). Experimental Evaluation of a Point Absorber Wave Energy Converter in a Laboratory Wave Tank, Amirkabir J. Mech. Eng., 49(1) 93-100.
Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Creative Commons License
International Journal of Maritime Technology is licensed under a

Creative Commons Attribution-NonCommercial 4.0 International License.