Enhanced thermal efficiency in off-highway vehicles using a reheat organic Rankine cycle with a two-stage radial turbine and wet fluids
Off-highway vehicles contribute significantly to environmental pollution, underscoring the need for effective waste heat recovery solutions. Organic Rankine cycles (ORC) recover waste heat from exhaust emissions, converting it into useful power, which helps reduce fuel consumption and harmful emissi...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25004836 |
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| author | Fuhaid Alshammari Maha Alharbi Sattam Alharbi |
| author_facet | Fuhaid Alshammari Maha Alharbi Sattam Alharbi |
| author_sort | Fuhaid Alshammari |
| collection | DOAJ |
| description | Off-highway vehicles contribute significantly to environmental pollution, underscoring the need for effective waste heat recovery solutions. Organic Rankine cycles (ORC) recover waste heat from exhaust emissions, converting it into useful power, which helps reduce fuel consumption and harmful emissions. This study presents a reheat ORC system with a two-stage radial turbine using R21, a wet fluid, at various reheat pressures. The results show that using R21 at a reheat pressure of 1100 kPa leads to substantial improvements in turbine power (39.5 %), efficiency (21.54 %), and system size (86.27 %) compared to the dry fluid R123 with conventional ORCs. Additionally, engine power and brake specific fuel consumption (BSFC) improved by 17 % and 15.73 %, respectively, after implementing the reheat ORC. |
| format | Article |
| id | doaj-art-3e6c40ef7c1c40fdadbba00fe7dc9e82 |
| institution | OA Journals |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-3e6c40ef7c1c40fdadbba00fe7dc9e822025-08-20T02:04:37ZengElsevierCase Studies in Thermal Engineering2214-157X2025-07-017110622310.1016/j.csite.2025.106223Enhanced thermal efficiency in off-highway vehicles using a reheat organic Rankine cycle with a two-stage radial turbine and wet fluidsFuhaid Alshammari0Maha Alharbi1Sattam Alharbi2Mechanical Engineering Department, Engineering College, University of Hail, Hail, 2440, Saudi Arabia; Corresponding author.Biology Department, Science College, University of Hail, Hail, 2440, Saudi ArabiaMechanical Engineering Department, Engineering College, University of Hail, Hail, 2440, Saudi ArabiaOff-highway vehicles contribute significantly to environmental pollution, underscoring the need for effective waste heat recovery solutions. Organic Rankine cycles (ORC) recover waste heat from exhaust emissions, converting it into useful power, which helps reduce fuel consumption and harmful emissions. This study presents a reheat ORC system with a two-stage radial turbine using R21, a wet fluid, at various reheat pressures. The results show that using R21 at a reheat pressure of 1100 kPa leads to substantial improvements in turbine power (39.5 %), efficiency (21.54 %), and system size (86.27 %) compared to the dry fluid R123 with conventional ORCs. Additionally, engine power and brake specific fuel consumption (BSFC) improved by 17 % and 15.73 %, respectively, after implementing the reheat ORC.http://www.sciencedirect.com/science/article/pii/S2214157X25004836Reheat organic Rankine cycleOff-highway vehiclesTwo-stage radial inflow turbineWet fluidsBSFC |
| spellingShingle | Fuhaid Alshammari Maha Alharbi Sattam Alharbi Enhanced thermal efficiency in off-highway vehicles using a reheat organic Rankine cycle with a two-stage radial turbine and wet fluids Case Studies in Thermal Engineering Reheat organic Rankine cycle Off-highway vehicles Two-stage radial inflow turbine Wet fluids BSFC |
| title | Enhanced thermal efficiency in off-highway vehicles using a reheat organic Rankine cycle with a two-stage radial turbine and wet fluids |
| title_full | Enhanced thermal efficiency in off-highway vehicles using a reheat organic Rankine cycle with a two-stage radial turbine and wet fluids |
| title_fullStr | Enhanced thermal efficiency in off-highway vehicles using a reheat organic Rankine cycle with a two-stage radial turbine and wet fluids |
| title_full_unstemmed | Enhanced thermal efficiency in off-highway vehicles using a reheat organic Rankine cycle with a two-stage radial turbine and wet fluids |
| title_short | Enhanced thermal efficiency in off-highway vehicles using a reheat organic Rankine cycle with a two-stage radial turbine and wet fluids |
| title_sort | enhanced thermal efficiency in off highway vehicles using a reheat organic rankine cycle with a two stage radial turbine and wet fluids |
| topic | Reheat organic Rankine cycle Off-highway vehicles Two-stage radial inflow turbine Wet fluids BSFC |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25004836 |
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