Analysis & characterization of a flow thermo-electrochemical cell for power generation & heat convection

Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.

Bibliographic Details
Main Author: Booeshaghi, Ali Sina
Other Authors: Evelyn N. Wang.
Format: Thesis
Language:eng
Published: Massachusetts Institute of Technology 2017
Subjects:
Online Access:http://hdl.handle.net/1721.1/112567
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author Booeshaghi, Ali Sina
author2 Evelyn N. Wang.
author_facet Evelyn N. Wang.
Booeshaghi, Ali Sina
author_sort Booeshaghi, Ali Sina
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description Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.
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spelling mit-1721.1/1125672019-04-12T23:22:16Z Analysis & characterization of a flow thermo-electrochemical cell for power generation & heat convection Analysis and characterization of a flow thermo-electrochemical cell for power generation and heat convection Booeshaghi, Ali Sina Evelyn N. Wang. Massachusetts Institute of Technology. Department of Mechanical Engineering. Massachusetts Institute of Technology. Department of Mechanical Engineering. Mechanical Engineering. Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017. Cataloged from PDF version of thesis. Includes bibliographical references (pages 53-55). In this thesis, I analyzed and characterized a new flow thermo-electrochemical cell that generates power from waste-heat, while in parallel convecting this heat away from the source. I also reviewed previous research on the topic of thermo-electric energy generation, governing physics behind thermo-electrochemical energy generation, actual device fabrication, device testing, results, and applications of this technology. Thermo-electric devices (TE devices) exhibit the thermo-electric effect, where temperature gradients and material properties work in tandem to drive electron transfer at electrode surfaces, thereby generating electricity. For example, a typical sold-state TE device such as a bismuth telluride TE device, can generate up to 0.300 mV/K [31]. New reseach has emerged [25, 26, 14] focusing on liquid-based thermo-electrochemical (TEC) cells that take advantage of the temperature dependence of oxidation/reduction chemical reactions to generate electricity. One of the major benefits of these TEC devices over traditional TE devices is a much higher S, = 1.5 mV/K; another is the low cost of manufacturing, making them promising for commercial applications. The new TEC device that I fabricated and studied utilizes a flowing electrolyte instead of a stationary electrolyte. With this new configuration, and a heated boundary condition, I studied both the energy generation and convective heat transfer capabilities of the flowing electrolyte TEC cell. Numerically I obtained a maximum power output and heat transfer coefficient for the TEC cell of Pmax = 2.6 [mu]W and h = 340 W/m²K which corroborates well with the experimentally found value of Pmax = 2.0 [mu]W and h = 450 W/m². K. If employed in data centers, as a device for CPU cooling, with the given power output I found that a 100,000 ft² data center can generate about 21.96 MWh of energy, which at a cost of 0.20 $/kWh can save a data center about 5,000 $/year. More generally, the application of this technology in locations where waste-heat is prevalent, will allow for energy recycling and consequent cost savings. by Ali Sina Booeshaghi. S.B. 2017-12-05T19:18:38Z 2017-12-05T19:18:38Z 2017 2017 Thesis http://hdl.handle.net/1721.1/112567 1013188014 eng MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582 55 pages application/pdf Massachusetts Institute of Technology
spellingShingle Mechanical Engineering.
Booeshaghi, Ali Sina
Analysis & characterization of a flow thermo-electrochemical cell for power generation & heat convection
title Analysis & characterization of a flow thermo-electrochemical cell for power generation & heat convection
title_full Analysis & characterization of a flow thermo-electrochemical cell for power generation & heat convection
title_fullStr Analysis & characterization of a flow thermo-electrochemical cell for power generation & heat convection
title_full_unstemmed Analysis & characterization of a flow thermo-electrochemical cell for power generation & heat convection
title_short Analysis & characterization of a flow thermo-electrochemical cell for power generation & heat convection
title_sort analysis characterization of a flow thermo electrochemical cell for power generation heat convection
topic Mechanical Engineering.
url http://hdl.handle.net/1721.1/112567
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