Component-Oriented Modeling of a Micro-Scale Organic Rankine Cycle System for Waste Heat Recovery Applications
Organic Rankine cycle (ORC) systems are some of the most suitable technologies to produce electricity from low-temperature waste heat. In this study, a non-regenerative, micro-scale ORC system was tested in off-design conditions using R134a as the working fluid. The experimental data were then used...
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MDPI AG
2021-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/5/1984 |
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| author | Ramin Moradi Emanuele Habib Enrico Bocci Luca Cioccolanti |
| author_facet | Ramin Moradi Emanuele Habib Enrico Bocci Luca Cioccolanti |
| author_sort | Ramin Moradi |
| collection | DOAJ |
| description | Organic Rankine cycle (ORC) systems are some of the most suitable technologies to produce electricity from low-temperature waste heat. In this study, a non-regenerative, micro-scale ORC system was tested in off-design conditions using R134a as the working fluid. The experimental data were then used to tune the semi-empirical models of the main components of the system. Eventually, the models were used in a component-oriented system solver to map the system electric performance at varying operating conditions. The analysis highlighted the non-negligible impact of the plunger pump on the system performance Indeed, the experimental results showed that the low pump efficiency in the investigated operating range can lead to negative net electric power in some working conditions. For most data points, the expander and the pump isentropic efficiencies are found in the approximate ranges of 35% to 55% and 17% to 34%, respectively. Furthermore, the maximum net electric power was about 200 W with a net electric efficiency of about 1.2%, thus also stressing the importance of a proper selection of the pump for waste heat recovery applications. |
| first_indexed | 2024-03-09T00:35:20Z |
| format | Article |
| id | doaj.art-45287ae29533459083d2be131cb3b68c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T00:35:20Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-45287ae29533459083d2be131cb3b68c2023-12-11T18:13:11ZengMDPI AGApplied Sciences2076-34172021-02-01115198410.3390/app11051984Component-Oriented Modeling of a Micro-Scale Organic Rankine Cycle System for Waste Heat Recovery ApplicationsRamin Moradi0Emanuele Habib1Enrico Bocci2Luca Cioccolanti3DIAEE, Sapienza Università di Roma, Via Eudossiana 18, 00184 Rome, ItalyDIAEE, Sapienza Università di Roma, Via Eudossiana 18, 00184 Rome, ItalyDepartment of Engineering Sciences, Marconi University, Via Paolo Emilio 29, 00193 Rome, ItalyCREAT, Università eCampus, Via Isimbardi 10, 22060 Novedrate, ItalyOrganic Rankine cycle (ORC) systems are some of the most suitable technologies to produce electricity from low-temperature waste heat. In this study, a non-regenerative, micro-scale ORC system was tested in off-design conditions using R134a as the working fluid. The experimental data were then used to tune the semi-empirical models of the main components of the system. Eventually, the models were used in a component-oriented system solver to map the system electric performance at varying operating conditions. The analysis highlighted the non-negligible impact of the plunger pump on the system performance Indeed, the experimental results showed that the low pump efficiency in the investigated operating range can lead to negative net electric power in some working conditions. For most data points, the expander and the pump isentropic efficiencies are found in the approximate ranges of 35% to 55% and 17% to 34%, respectively. Furthermore, the maximum net electric power was about 200 W with a net electric efficiency of about 1.2%, thus also stressing the importance of a proper selection of the pump for waste heat recovery applications.https://www.mdpi.com/2076-3417/11/5/1984micro-scale ORCoff-design performanceexperimental modelingvolumetric pump modelinglow-grade waste heat recovery applications |
| spellingShingle | Ramin Moradi Emanuele Habib Enrico Bocci Luca Cioccolanti Component-Oriented Modeling of a Micro-Scale Organic Rankine Cycle System for Waste Heat Recovery Applications Applied Sciences micro-scale ORC off-design performance experimental modeling volumetric pump modeling low-grade waste heat recovery applications |
| title | Component-Oriented Modeling of a Micro-Scale Organic Rankine Cycle System for Waste Heat Recovery Applications |
| title_full | Component-Oriented Modeling of a Micro-Scale Organic Rankine Cycle System for Waste Heat Recovery Applications |
| title_fullStr | Component-Oriented Modeling of a Micro-Scale Organic Rankine Cycle System for Waste Heat Recovery Applications |
| title_full_unstemmed | Component-Oriented Modeling of a Micro-Scale Organic Rankine Cycle System for Waste Heat Recovery Applications |
| title_short | Component-Oriented Modeling of a Micro-Scale Organic Rankine Cycle System for Waste Heat Recovery Applications |
| title_sort | component oriented modeling of a micro scale organic rankine cycle system for waste heat recovery applications |
| topic | micro-scale ORC off-design performance experimental modeling volumetric pump modeling low-grade waste heat recovery applications |
| url | https://www.mdpi.com/2076-3417/11/5/1984 |
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