Simulation of Behaviour of an Energy Storage Device During Installation Process in Lake Ontario

2018 ◽  
Author(s):  
M. Hasanat Zaman ◽  
Ayhan Akinturk ◽  
Andrew McGillis
Keyword(s):  
Energy Storage ◽  
National Research Council ◽  
Lake Ontario ◽  
Storage Device ◽  
Release Mechanism ◽  
Storage Unit ◽  
Energy Storage Unit ◽  
Offshore Engineering ◽  
Scale Test ◽  
Good Agreement

A model of a compressed air energy storage unit is tested for tow-out and installation in the Ocean, Coastal & River Engineering (OCRE) Portfolio of the National Research Council of Canada (NRC). The proposed prototype accumulator is a cylinder of 36 m in diameter and 12 m in height, which will be installed at the bottom of Lake Ontario at about 60 m water depth. The model of the accumulator with scale 1:21.5 was fabricated at the Design and Fabrication Unit of NRC. Appropriate ballast systems were designed and applied for the tow out, installations and release mechanism tests. The model scale test was conducted to examine the hydrodynamic behavior of the accumulator during tow-out and set down operations. NRC’s Towing Tank and Offshore Engineering Basin test facilities were used for the tasks. In this paper only the installation case of the accumulator is reported and discussed. Relevant numerical simulations are also carried out. Comparisons of the numerical results with the experimental results show good agreement for the compared cases.

scholarly journals A Power Buffer in an Electric Driveline: Two Batteries Are Better Than One

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Juan de Santiago ◽  
Florian Burmeister ◽  
Johan Lundin ◽  
Janaina G. Oliveira
Keyword(s):  
Energy Storage ◽  
High Energy ◽  
Primary Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Storage Unit ◽  
Battery Lifetime ◽  
Energy Storage Unit ◽  
Power Response ◽  
Better Than

Fuel cells and high energy density batteries have limited overrated capacity and slow power response. Ultracapacitors and flywheels are proposed to overcome these limitations and to facilitate regenerative braking in hybrid and electric vehicles. The simulations presented in this paper show that a Secondary Energy Storage Unit (SESU) enhances the performance of the drivelines as previously suggested and provides additional improvements. A combined design of the primary energy source and the SESU reduces the total weight and volume and increases the battery lifetime. A full-electric driveline is simulated using a standard EPA FTP-75 drive cycle. Then the same vehicle is simulated with as SESU and the results are compared. The same is done for a hybrid driveline. Two drivelines are used as references and then enhanced with an SESU; four simulations are presented in total. Simulation results show that an energy storage device with very low energy and high power allows better battery selection and energy management.

scholarly journals Experimental Achievement and Improvement of Latent Heat Energy Storage Unit

2019 ◽  
Vol 01 (02) ◽  
pp. 182-190 ◽  
Author(s):  
Hocine GUELLIL ◽  
Abdel Illah Nabil KORTI ◽  
◽  
Keyword(s):  
Energy Storage ◽  
Latent Heat ◽  
Thermal Energy ◽  
Phase Change Materials ◽  
Thermal Storage ◽  
Heat Transfer Fluid ◽  
Storage Device ◽  
Storage Unit ◽  
Energy Storage Unit ◽  
Thermal Energy Storage Systems

Thermal energy storage systems by latent heat, in which phase change materials are used, are the subject of many scientific works. These systems are designed to guarantee the energy saving through promising technology. The present work concerns the experimental study of thermal performances of a latent heat thermal storage device made in our laboratory (ETAP). The PCM (paraffin) is stored in the vertical finned U-shaped tubes of the exchanger. The air is used as the heat transfer fluid. The storage unit use several identical heat exchangers filled with paraffin. The study examines the complete cycle with the two processes of charging (melting) and discharging (solidification) to analyse the effect of the numbers of exchangers on the thermal performance of the thermal storage. The obtained results showes that the storage unit with three exchangers stores 73 and 32% more thermal energy than a storage unit with one and two exchangers. At the end of the discharging duration, the first exchanger releases its total heat in Conf. 1, 2 and 3 respectively, after 126, 149 and 160 min

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