Thermodynamic and Exergy Analyses of a Novel Solar-Powered CO2 Transcritical Power Cycle with Recovery of Cryogenic LNG Using Stirling Engines
In this paper, a novel CO2 transcritical power cycle which is driven by solar energy integrated by a cryogenic LNG recovery unit is investigated. In the proposed cycle, the condenser unit of the CO2 power cycle is replaced by a Stirling engine. Thermodynamic and exergy analyses are carried out to ev...
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| Format: | Article |
| Language: | English |
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Shahrood University of Technology
2020-07-01
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| Series: | Renewable Energy Research and Applications |
| Subjects: | |
| Online Access: | http://rera.shahroodut.ac.ir/article_1683_05ec56c98ddb173112d410a864107dc6.pdf |
| _version_ | 1818729077280866304 |
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| author | A. Naseri M. Fazlikhani M. Sadeghzadeh A. Naeimi M. Bidi Seyyed H. Tabatabaei |
| author_facet | A. Naseri M. Fazlikhani M. Sadeghzadeh A. Naeimi M. Bidi Seyyed H. Tabatabaei |
| author_sort | A. Naseri |
| collection | DOAJ |
| description | In this paper, a novel CO2 transcritical power cycle which is driven by solar energy integrated by a cryogenic LNG recovery unit is investigated. In the proposed cycle, the condenser unit of the CO2 power cycle is replaced by a Stirling engine. Thermodynamic and exergy analyses are carried out to evaluate the performance of the presented system. Furthermore, in order to investigate the impact of utilization of Stirling engines instead of conventional condenser units, the proposed cycle is compared with the typical CO2 power cycle. The results show that employing the Stirling engine decrease the exergy destruction from 17% in the typical cycle to 8.85%. In addition, the total generated power of the novel system is considerably boosted up about 15 kW in off-peak times and more than 20 kW in the peak time. Moreover, integration of the Stirling engine also decreases LNG mass flow rate. Therefore, the required heat exchanger area in the LNG heater is also lowered. |
| first_indexed | 2024-12-17T22:40:09Z |
| format | Article |
| id | doaj.art-df6527661b4144f0873193b15d40052b |
| institution | Directory Open Access Journal |
| issn | 2717-252X 2676-7430 |
| language | English |
| last_indexed | 2024-12-17T22:40:09Z |
| publishDate | 2020-07-01 |
| publisher | Shahrood University of Technology |
| record_format | Article |
| series | Renewable Energy Research and Applications |
| spelling | doaj.art-df6527661b4144f0873193b15d40052b2022-12-21T21:29:59ZengShahrood University of TechnologyRenewable Energy Research and Applications2717-252X2676-74302020-07-011217518510.22044/rera.2020.9282.10231683Thermodynamic and Exergy Analyses of a Novel Solar-Powered CO2 Transcritical Power Cycle with Recovery of Cryogenic LNG Using Stirling EnginesA. Naseri0M. Fazlikhani1M. Sadeghzadeh2A. Naeimi3M. Bidi4Seyyed H. Tabatabaei5Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, A.C., Tehran, Iran.Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, A.C., Tehran, Iran.Department of Renewable Energy and Environmental Engineering, University of Tehran, Tehran, Iran.Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, A.C., Tehran, Iran.Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, Tehran, Iran.Department of Renewable Energy and Environmental Engineering, University of Tehran, Tehran, Iran.In this paper, a novel CO2 transcritical power cycle which is driven by solar energy integrated by a cryogenic LNG recovery unit is investigated. In the proposed cycle, the condenser unit of the CO2 power cycle is replaced by a Stirling engine. Thermodynamic and exergy analyses are carried out to evaluate the performance of the presented system. Furthermore, in order to investigate the impact of utilization of Stirling engines instead of conventional condenser units, the proposed cycle is compared with the typical CO2 power cycle. The results show that employing the Stirling engine decrease the exergy destruction from 17% in the typical cycle to 8.85%. In addition, the total generated power of the novel system is considerably boosted up about 15 kW in off-peak times and more than 20 kW in the peak time. Moreover, integration of the Stirling engine also decreases LNG mass flow rate. Therefore, the required heat exchanger area in the LNG heater is also lowered.http://rera.shahroodut.ac.ir/article_1683_05ec56c98ddb173112d410a864107dc6.pdfsolar collectortranscritical co2 power cyclelngstirling engineexergy |
| spellingShingle | A. Naseri M. Fazlikhani M. Sadeghzadeh A. Naeimi M. Bidi Seyyed H. Tabatabaei Thermodynamic and Exergy Analyses of a Novel Solar-Powered CO2 Transcritical Power Cycle with Recovery of Cryogenic LNG Using Stirling Engines Renewable Energy Research and Applications solar collector transcritical co2 power cycle lng stirling engine exergy |
| title | Thermodynamic and Exergy Analyses of a Novel Solar-Powered CO2 Transcritical Power Cycle with Recovery of Cryogenic LNG Using Stirling Engines |
| title_full | Thermodynamic and Exergy Analyses of a Novel Solar-Powered CO2 Transcritical Power Cycle with Recovery of Cryogenic LNG Using Stirling Engines |
| title_fullStr | Thermodynamic and Exergy Analyses of a Novel Solar-Powered CO2 Transcritical Power Cycle with Recovery of Cryogenic LNG Using Stirling Engines |
| title_full_unstemmed | Thermodynamic and Exergy Analyses of a Novel Solar-Powered CO2 Transcritical Power Cycle with Recovery of Cryogenic LNG Using Stirling Engines |
| title_short | Thermodynamic and Exergy Analyses of a Novel Solar-Powered CO2 Transcritical Power Cycle with Recovery of Cryogenic LNG Using Stirling Engines |
| title_sort | thermodynamic and exergy analyses of a novel solar powered co2 transcritical power cycle with recovery of cryogenic lng using stirling engines |
| topic | solar collector transcritical co2 power cycle lng stirling engine exergy |
| url | http://rera.shahroodut.ac.ir/article_1683_05ec56c98ddb173112d410a864107dc6.pdf |
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