Influence of the velocity ratio and rotational speed on the polymer based desiccant dehumidifier
Abstract Nowadays, it’s essential to reduce our reliance on conventional air conditioning units and switch to desiccant-based dehumidifiers and air conditioners. This shift promotes sustainability, protects the environment from harmful gas emissions, and minimizes energy consumption. The current wor...
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Springer
2025-07-01
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| Series: | Discover Applied Sciences |
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| Online Access: | https://doi.org/10.1007/s42452-025-07307-4 |
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| author | Shiva Kumar Sampath Suranjan Salins S. V. Kota Reddy |
| author_facet | Shiva Kumar Sampath Suranjan Salins S. V. Kota Reddy |
| author_sort | Shiva Kumar |
| collection | DOAJ |
| description | Abstract Nowadays, it’s essential to reduce our reliance on conventional air conditioning units and switch to desiccant-based dehumidifiers and air conditioners. This shift promotes sustainability, protects the environment from harmful gas emissions, and minimizes energy consumption. The current work centres on developing a polymer-based dynamic desiccant dehumidifier system. This involves studying the velocity ratios between the dehumidifier and regenerator air at various rotational speeds. Four sets of velocity ratios and four sets of rotational speeds are included in the matrix preparation. The results indicated that the system performed optimally with a velocity ratio range of 1.00 to 0.20, demonstrating improved temperature and humidity changes as well as dehumidification efficiency. In contrast, the highest velocity ratio range of 4.00 to 0.80 achieved the maximum rate of moisture removal, performance coefficient, and coefficient of mass transfer at an optimum rotational speed of 24.0 rpm. Beyond these ranges, performance declined significantly. This unit reached a maximum rate of moisture removal of 0.23 g/s, dehumidification efficiency of 83.7%, a coefficient of performance of 5.36, and a coefficient of mass transfer of 6.67 kg/m2-s. Highlights As the velocity ratio decreases, both efficiency & moisture removal rate increase. Dehumidification performance improves up to 24.0 rpm, and then it declines. COP values of 1.87, 3.25, 4.24, and 5.36 are achieved for VR of 1.00, 2.00, 3.00, and 4.00. Power consumption & pressure drop rise with the velocity ratio & wheel speed. Mass transfer coefficient of 6.67 kg/m2·s is obtained at 24.0 rpm & VR of 0.80. |
| format | Article |
| id | doaj-art-4891bf55d2f04482bd5a52fcd3d13b9b |
| institution | Kabale University |
| issn | 3004-9261 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Springer |
| record_format | Article |
| series | Discover Applied Sciences |
| spelling | doaj-art-4891bf55d2f04482bd5a52fcd3d13b9b2025-08-20T04:01:36ZengSpringerDiscover Applied Sciences3004-92612025-07-017712310.1007/s42452-025-07307-4Influence of the velocity ratio and rotational speed on the polymer based desiccant dehumidifierShiva Kumar0Sampath Suranjan Salins1S. V. Kota Reddy2Department of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher EducationManipal Academy of Higher Education, Dubai CampusDepartment of Mechanical Engineering, VIT-AP UniversityAbstract Nowadays, it’s essential to reduce our reliance on conventional air conditioning units and switch to desiccant-based dehumidifiers and air conditioners. This shift promotes sustainability, protects the environment from harmful gas emissions, and minimizes energy consumption. The current work centres on developing a polymer-based dynamic desiccant dehumidifier system. This involves studying the velocity ratios between the dehumidifier and regenerator air at various rotational speeds. Four sets of velocity ratios and four sets of rotational speeds are included in the matrix preparation. The results indicated that the system performed optimally with a velocity ratio range of 1.00 to 0.20, demonstrating improved temperature and humidity changes as well as dehumidification efficiency. In contrast, the highest velocity ratio range of 4.00 to 0.80 achieved the maximum rate of moisture removal, performance coefficient, and coefficient of mass transfer at an optimum rotational speed of 24.0 rpm. Beyond these ranges, performance declined significantly. This unit reached a maximum rate of moisture removal of 0.23 g/s, dehumidification efficiency of 83.7%, a coefficient of performance of 5.36, and a coefficient of mass transfer of 6.67 kg/m2-s. Highlights As the velocity ratio decreases, both efficiency & moisture removal rate increase. Dehumidification performance improves up to 24.0 rpm, and then it declines. COP values of 1.87, 3.25, 4.24, and 5.36 are achieved for VR of 1.00, 2.00, 3.00, and 4.00. Power consumption & pressure drop rise with the velocity ratio & wheel speed. Mass transfer coefficient of 6.67 kg/m2·s is obtained at 24.0 rpm & VR of 0.80.https://doi.org/10.1007/s42452-025-07307-4Velocity ratioDehumidifierPolymerSolid desiccant |
| spellingShingle | Shiva Kumar Sampath Suranjan Salins S. V. Kota Reddy Influence of the velocity ratio and rotational speed on the polymer based desiccant dehumidifier Discover Applied Sciences Velocity ratio Dehumidifier Polymer Solid desiccant |
| title | Influence of the velocity ratio and rotational speed on the polymer based desiccant dehumidifier |
| title_full | Influence of the velocity ratio and rotational speed on the polymer based desiccant dehumidifier |
| title_fullStr | Influence of the velocity ratio and rotational speed on the polymer based desiccant dehumidifier |
| title_full_unstemmed | Influence of the velocity ratio and rotational speed on the polymer based desiccant dehumidifier |
| title_short | Influence of the velocity ratio and rotational speed on the polymer based desiccant dehumidifier |
| title_sort | influence of the velocity ratio and rotational speed on the polymer based desiccant dehumidifier |
| topic | Velocity ratio Dehumidifier Polymer Solid desiccant |
| url | https://doi.org/10.1007/s42452-025-07307-4 |
| work_keys_str_mv | AT shivakumar influenceofthevelocityratioandrotationalspeedonthepolymerbaseddesiccantdehumidifier AT sampathsuranjansalins influenceofthevelocityratioandrotationalspeedonthepolymerbaseddesiccantdehumidifier AT svkotareddy influenceofthevelocityratioandrotationalspeedonthepolymerbaseddesiccantdehumidifier |