Thermodynamic and economic analysis of ocean thermal energy conversion system using zeotropic mixtures
Zeotropic mixtures offer a promising strategy for enhancing the thermodynamic efficiency and economic feasibility of ocean thermal energy conversion (OTEC) systems. This study investigates two binary mixtures containing R32: R32/R125 and R32/R134a. Through the development of comprehensive thermodyna...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24014394 |
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| author | Yanmei Zhang Jiawei Deng Zilong Deng |
| author_facet | Yanmei Zhang Jiawei Deng Zilong Deng |
| author_sort | Yanmei Zhang |
| collection | DOAJ |
| description | Zeotropic mixtures offer a promising strategy for enhancing the thermodynamic efficiency and economic feasibility of ocean thermal energy conversion (OTEC) systems. This study investigates two binary mixtures containing R32: R32/R125 and R32/R134a. Through the development of comprehensive thermodynamic and economic models, the research examines the impact of mass fraction and evaporation temperature on the efficiency and cost-effectiveness of the OTEC system. The results indicate that, especially at high evaporation temperatures, the R32/R134a mixture—characterized by significant temperature glide—substantially increases the total energy production capacity of the OTEC system. Compared to pure R32, the OTEC with R32/R134a (mass fraction of R32 is 0.55) has a net output power increase of 9.87 kW and a reduction in LCOE of about 61.4 %. In addition, the advantages of R32/R125 mixtures over pure working fluids are not significant due to the small glide temperature. Ultimately, this investigation enhances the overall performance of OTEC systems, thereby supporting sustainable energy solutions for island communities. |
| format | Article |
| id | doaj-art-0e472b1767bb4daa8f68a27ce5f7de04 |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-0e472b1767bb4daa8f68a27ce5f7de042024-12-07T08:26:25ZengElsevierCase Studies in Thermal Engineering2214-157X2024-12-0164105408Thermodynamic and economic analysis of ocean thermal energy conversion system using zeotropic mixturesYanmei Zhang0Jiawei Deng1Zilong Deng2Shanghai Electric Group Co., Ltd., Shanghai, 200070, PR ChinaSchool of Energy and Environment, Southeast University, Nanjing, 210096, PR ChinaSchool of Energy and Environment, Southeast University, Nanjing, 210096, PR China; Corresponding author.Zeotropic mixtures offer a promising strategy for enhancing the thermodynamic efficiency and economic feasibility of ocean thermal energy conversion (OTEC) systems. This study investigates two binary mixtures containing R32: R32/R125 and R32/R134a. Through the development of comprehensive thermodynamic and economic models, the research examines the impact of mass fraction and evaporation temperature on the efficiency and cost-effectiveness of the OTEC system. The results indicate that, especially at high evaporation temperatures, the R32/R134a mixture—characterized by significant temperature glide—substantially increases the total energy production capacity of the OTEC system. Compared to pure R32, the OTEC with R32/R134a (mass fraction of R32 is 0.55) has a net output power increase of 9.87 kW and a reduction in LCOE of about 61.4 %. In addition, the advantages of R32/R125 mixtures over pure working fluids are not significant due to the small glide temperature. Ultimately, this investigation enhances the overall performance of OTEC systems, thereby supporting sustainable energy solutions for island communities.http://www.sciencedirect.com/science/article/pii/S2214157X24014394Ocean thermal energy conversionZeotropic mixturesThermodynamicEconomicLevelized cost of electricity |
| spellingShingle | Yanmei Zhang Jiawei Deng Zilong Deng Thermodynamic and economic analysis of ocean thermal energy conversion system using zeotropic mixtures Case Studies in Thermal Engineering Ocean thermal energy conversion Zeotropic mixtures Thermodynamic Economic Levelized cost of electricity |
| title | Thermodynamic and economic analysis of ocean thermal energy conversion system using zeotropic mixtures |
| title_full | Thermodynamic and economic analysis of ocean thermal energy conversion system using zeotropic mixtures |
| title_fullStr | Thermodynamic and economic analysis of ocean thermal energy conversion system using zeotropic mixtures |
| title_full_unstemmed | Thermodynamic and economic analysis of ocean thermal energy conversion system using zeotropic mixtures |
| title_short | Thermodynamic and economic analysis of ocean thermal energy conversion system using zeotropic mixtures |
| title_sort | thermodynamic and economic analysis of ocean thermal energy conversion system using zeotropic mixtures |
| topic | Ocean thermal energy conversion Zeotropic mixtures Thermodynamic Economic Levelized cost of electricity |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24014394 |
| work_keys_str_mv | AT yanmeizhang thermodynamicandeconomicanalysisofoceanthermalenergyconversionsystemusingzeotropicmixtures AT jiaweideng thermodynamicandeconomicanalysisofoceanthermalenergyconversionsystemusingzeotropicmixtures AT zilongdeng thermodynamicandeconomicanalysisofoceanthermalenergyconversionsystemusingzeotropicmixtures |