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research-article

Analysis and Efficiency Assessment of Direct Conversion of Wind Energy into Heat Using Electromagnetic Induction and Thermal Energy Storage

[+] Author and Article Information
Huseyin Karasu

Clean Energy Research Laboratory, Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada
huseyin.karasu@uoit.ca

Ibrahim Dincer

Clean Energy Research Laboratory, Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada
ibrahim.dincer@uoit.ca

1Corresponding author.

ASME doi:10.1115/1.4039023 History: Received September 13, 2017; Revised January 09, 2018

Abstract

Converting wind energy into electrical energy is not new method of power generation anymore, but the design, improvement and equipment optimization of this class is still one of the top priorities for energy industry and academic researchers. Due to the intermittent nature of wind, electrical power produced from wind turbines is very fluctuating, and it can influence both the power quality and stability. Direct conversion of wind energy into heat energy integrated to thermal energy storage (TES) applications can be a practical solution for energy storage issue. By coupling TES with a wind heat generator using electromagnetic induction, it is possible to store thermal energy for afterwards use to energize a steam turbine in order to generate electrical power. This study deals with thermodynamic analyses of an integrated wind thermal energy storage (WTES) system. The magnitudes of irreversibilities are determined, and the impacts of different parameters on the performance of the system are identified. The complete energy and exergy efficiencies of the proposed system and its subsystems are computed as well. The energy and exergy efficiencies of the overall system are defined and obtained as 7.0% and 8.6% respectively. Wind thermal energy storage (WTES) plants with combined molten salt energy storage application can run continuously, and can provide electrical power for both on-grid and off-grid systems. By converting the wind power into a permanent energy source, WTES proposes a practical solution that can meet the world's requirement for consistent, environmentally benign power production.

Copyright (c) 2018 by ASME
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