Cold side thermal energy storage system for improved operation of air cooled power plants
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2013
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| Online Access: | http://hdl.handle.net/1721.1/78194 |
| _version_ | 1826204579034824704 |
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| author | Williams, Daniel David |
| author2 | Alexander Mitsos. |
| author_facet | Alexander Mitsos. Williams, Daniel David |
| author_sort | Williams, Daniel David |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012. |
| first_indexed | 2024-09-23T12:57:41Z |
| format | Thesis |
| id | mit-1721.1/78194 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T12:57:41Z |
| publishDate | 2013 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/781942019-04-12T11:31:46Z Cold side thermal energy storage system for improved operation of air cooled power plants Williams, Daniel David Alexander Mitsos. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Mechanical Engineering. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012. Cataloged from PDF version of thesis. Includes bibliographical references (p. 81-82). Air cooled power plants experience significant performance fluctuations as plant cooling capacity reduces due to higher daytime temperature than nighttime temperature. The purpose of this thesis is to simulate the detailed operation of a cold side thermal energy storage system in order to evaluate its potential. An organic Rankine cycle geothermal power station is used as an example application. Detailed sizing and operation considerations are discussed. Several representative case studies compare the performance of candidate configurations. Operation of the selected configuration is then simulated for a full year and a proposed integration of the system with existing plant hardware is laid out. A correlation between weather trends and production is outlined. Finally an economic cost/benefit analysis performed to determine the payback period for implementing the proposed system. The cold side TES system is shown to shift substantial power generation capability from nighttime to daytime when electrical demand is highest, especially during hot summer months. For example, daily energy production is shown to increase by up to 18% under particularly favorable conditions. This redistribution of the power generation curve is accomplished with less than a 5% reduction in overall annual energy production in Mega-Watt hours. The system is shown to be more effective at shifting power generation capacity during warmer months than cooler months. The reduced day to night temperature fluctuation during cooler months results in a reduced thermal storage benefit under similar parasitic loads. The economic benefits of this system are dependent upon the on-peak vs off-peak electricity prices. Economic analysis using 2011 transient price data from the U.S. Midwest Region results in a small increase in annual income. The increased income from the proposed cold side TES system is found to be insufficient to outweigh the required capital investment at current electricity prices. by Daniel David Williams. S.M. 2013-03-28T18:13:29Z 2013-03-28T18:13:29Z 2012 2012 Thesis http://hdl.handle.net/1721.1/78194 830376951 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 82 p. application/pdf Massachusetts Institute of Technology |
| spellingShingle | Mechanical Engineering. Williams, Daniel David Cold side thermal energy storage system for improved operation of air cooled power plants |
| title | Cold side thermal energy storage system for improved operation of air cooled power plants |
| title_full | Cold side thermal energy storage system for improved operation of air cooled power plants |
| title_fullStr | Cold side thermal energy storage system for improved operation of air cooled power plants |
| title_full_unstemmed | Cold side thermal energy storage system for improved operation of air cooled power plants |
| title_short | Cold side thermal energy storage system for improved operation of air cooled power plants |
| title_sort | cold side thermal energy storage system for improved operation of air cooled power plants |
| topic | Mechanical Engineering. |
| url | http://hdl.handle.net/1721.1/78194 |
| work_keys_str_mv | AT williamsdanieldavid coldsidethermalenergystoragesystemforimprovedoperationofaircooledpowerplants |